485BPOS

As filed with the U.S. Securities and

Exchange Commission on February 9, 2012

Registration Nos. 33-4382 & 811-4626

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	[    ]
Pre-Effective Amendment No.	[    ]
Post-Effective Amendment No.  39	[ X ]
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	[    ]
Amendment No. 40	[ X ]

THE CASCADES TRUST

(Exact Name of Registrant as Specified in Charter)

380 Madison Avenue, Suite 2300

New York, New York 10017

(Address of Principal Executive Offices)

(212) 697-6666

(Registrant's Telephone Number)

(212) 697-6666

(Registrant's Telephone Number)

Diana P. Herrmann

Aquila Investment Management LLC

380 Madison Avenue, Suite 2300

New York, New York 10017

(Name and Address of Agent for Service)

Copy to:

Roger P. Joseph, Esq.

Bingham McCutchen LLP

One Federal Street

Boston, Massachusetts 02110

It is proposed that this filing will become effective (check appropriate box):

[ X]	immediately upon filing pursuant to paragraph (b)
[    ]	on (date) pursuant to paragraph (b)
[    ]	60 days after filing pursuant to paragraph (a)(i)
[    ]	on (date) pursuant to paragraph (a)(i)
[    ]	75 days after filing pursuant to paragraph (a)(ii)
[    ]	on (date) pursuant to paragraph (a)(ii) of Rule 485.
[    ]	This post-effective amendment designates a new effective date for a previous post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all the requirements for effectiveness of this Post-Effective Amendment to its Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, and has caused this Post-Effective Amendment to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and State of New York, on the 9th day of February, 2012.

THE CASCADES TRUST

(Registrant)

By:           /s/ Diana P. Herrmann

Diana P. Herrmann, President

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to the Registration Statement has been signed below by the following persons in the capacities indicated below on February 9, 2012.

SIGNATURE	TITLE
/s/ Diana P. Herrmann
Diana P. Herrmann	Vice Chair, President and Trustee
/s/ Gary C. Cornia*
Gary C. Cornia	Trustee
/s/ James A. Gardner *
James A. Gardner	Chair of the Board of Trustees
/s/ Edmund P. Jensen *
Edmund P. Jensen	Trustee
/s/ John W. Mitchell*
John W. Mitchell.	Trustee
/s/ Ralph R. Shaw *
Ralph R. Shaw	Trustee
/s/ Nancy Wilgenbusch *
Nancy Wilgenbusch	Trustee

/s/ Joseph P. DiMaggio
Joseph P. DiMaggio	Chief Financial Officer and Treasurer

* By:            /s/ Diana P. Herrmann

Diana P. Herrmann

*Attorney-in-Fact, pursuant to Power of Attorney

THE CASCADES TRUST

Exhibit List

EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Label Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Sep. 30, 2011

Registrant Name

dei_EntityRegistrantName

CASCADES TRUST

Central Index Key

dei_EntityCentralIndexKey

0000791049

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Jan. 27, 2012

Document Effective Date

dei_DocumentEffectiveDate

Jan. 30, 2012

Prospectus Date

rr_ProspectusDate

Jan. 30, 2012

TAX-FREE TRUST OF OREGON

Risk/Return:

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

RISK/RETURN

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

The Trust’s objective is to provide you as high a level of current income exempt from Oregon state and regular Federal income taxes as is consistent with preservation of capital.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Trust

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses that you may pay if you buy and hold shares of the Trust. You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $25,000 in the Trust or in other funds in the Aquila Group of Funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in "Alternative Purchase Plans” on page 23 of the Trust's Prospectus, "What are the sales charges for purchases of Class A Shares” on page 24 of the Prospectus, "Reduced Sales Charges for Certain Purchases of Class A Shares” on page 26 of the Prospectus, and “Purchase, Redemption, and Pricing of Shares” on page 50 of the Statement of Additional Information (the “SAI”).  No Class I Shares are currently outstanding.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Trust Operating Expenses (Expenses that you pay each year as a percentage of your investment)

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

Portfolio Turnover

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

The Trust pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Trust shares are held in a taxable account. These costs, which are not reflected in annual Trust operating expenses or in the example, affect the Trust's performance. During the most recent fiscal year, the Trust's portfolio turnover rate was 15% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

15.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $25,000 in the Trust or in other funds in the Aquila Group of Funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in "Alternative Purchase Plans" on page 23 of the Trust's Prospectus, "What are the sales charges for purchases of Class A Shares" on page 24 of the Prospectus, "Reduced Sales Charges for Certain Purchases of Class A Shares" on page 26 of the Prospectus, and "Purchase, Redemption, and Pricing of Shares" on page 50 of the Statement of Additional Information (the "SAI"). No Class I Shares are currently outstanding.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

25,000

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Trust with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Trust for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Trust’s operating expenses remain the same. Six years after the date of purchase, Class C Shares automatically convert to Class A Shares.

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

You would pay the following expenses if you did not redeem your Class C Shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Trust invests primarily in municipal obligations that pay interest exempt in the opinion of bond counsel from regular Federal income  tax and Oregon state personal income tax. In general, all or almost all of these obligations are issued by the State of Oregon, its counties and various other local authorities. We call these “Oregon Obligations.” These securities may include participation or other interests in municipal securities and variable rate demand notes.  Some Oregon Obligations, such as general obligation issues, are backed by the issuer’s taxing authority, while other Oregon Obligations, such as revenue bonds, are backed only by revenues from certain facilities or other sources and not by the issuer itself.

Under normal circumstances, at least 80% of the Trust’s net assets will consist of Oregon Obligations the income paid upon which will not be subject to the Federal alternative minimum tax on individuals.  These obligations can be of any maturity, but the Trust’s average portfolio maturity has traditionally been between 10 and 18 years.

At the time of purchase, the Trust’s Oregon Obligations must be of investment grade quality. This means that they must either

* be rated within the four highest credit ratings assigned by nationally recognized statistical rating organizations or,

* if unrated, be determined to be of comparable quality by the Sub-Adviser.

The Sub-Adviser selects obligations for the Trust’s portfolio to best achieve the Trust’s objective by considering various characteristics including quality, maturity and coupon rate.

The Trust may use derivatives, including futures contracts and options on futures contracts, for a variety of purposes, including to “hedge” or protect its portfolio from adverse movements in securities prices and interest rates.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Market and Interest Rate Risk. The market prices of the Trust’s securities may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic or political conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. When market prices fall, the value of your investment may go down. The value of your investment may also go down when interest rates rise. A rise in rates tends to have a greater impact on the prices of longer term securities.

Credit Risk. If an issuer or obligor of a security held by the Trust or a counterparty to a financial contract with the Trust defaults or is downgraded, or if the value of the assets underlying a security declines, the value of your investment will typically decline.

Rating Agency Risk. Investment grade debt securities may be downgraded by a major rating agency to below investment grade status, which would increase the risk of holding these securities. In addition, a rating may become stale in that it fails to reflect changes to an issuer’s financial condition. Ratings represent the rating agency’s opinion regarding the quality of the security and are not a guarantee of quality. Rating agencies may fail to make timely credit ratings in response to subsequent events. In addition, rating agencies are subject to an inherent conflict of interest because they are often compensated by the same issuers whose securities they grade.

Risks Associated with Investments in Oregon and Other Municipal Obligations. The Trust may be affected significantly by adverse economic, political or other events affecting Oregon and other municipal issuers.

Tax Risk. The income on the Trust’s Oregon Obligations and other municipal obligations could become subject to Federal and/or state income taxes due to noncompliant conduct by issuers, unfavorable legislation or litigation or adverse interpretations by regulatory authorities.

Liquidity Risk. Some securities held by the Trust may be difficult to sell, or illiquid, particularly during times of market turmoil. Illiquid securities may also be difficult to value. If the Trust is forced to sell an illiquid security to meet redemption requests or other cash needs, the Trust may be forced to sell the security at a loss.

Prepayment or Call Risk. Many issuers have a right to prepay their securities. If interest rates fall, an issuer may exercise this right, and the Trust could be forced to reinvest prepayment proceeds at a time when yields on securities available in the market are lower than the yield on the prepaid security. The Trust may also lose any premium it paid on the security.

Portfolio Selection Risk. The value of your investment may decrease if the Sub-Adviser’s judgment about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, or about interest rates, is incorrect.

Derivatives Risk. Using derivatives can increase losses and reduce opportunities for gains when market prices, interest rates or the derivative instruments themselves, behave in a way not anticipated by the Trust. Using derivatives also can have a leveraging effect (which may increase investment losses) and increase Trust volatility. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the Trust. Recent legislation calls

for new regulation of the derivatives markets. The extent and impact of the regulation are not yet fully known and may not be for some time. New regulation of derivatives may make them more costly, may limit their availability, or may otherwise adversely affect their value or performance.

Leveraging Risk. The value of your investment may be more volatile if the Trust borrows or uses derivatives or other investments that have a leveraging effect on the Trust’s portfolio. This is because leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the Trust would otherwise have had. The Trust may also have to sell assets at inopportune times to satisfy its obligations.

The Trust is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”). Thus, compared with “diversified” funds, it may invest a greater percentage of its assets in obligations of a small number of issuers. In general, the more the Trust invests in the securities of specific issuers or issues of a similar project type, the more the Trust is exposed to risks associated with investments in those issuers or types of projects.  Also, the Trust may be more volatile than a more geographically diverse fund.

Loss of money is a risk of investing in the Trust.

These risks are discussed in more detail later in the Prospectus or in the SAI.

Risk Lose Money [Text]

rr_RiskLoseMoney

Loss of money is a risk of investing in the Trust.

Risk Nondiversified Status [Text]

rr_RiskNondiversifiedStatus

The Trust is classified as a "non-diversified" investment company under the Investment Company Act of 1940 (the "1940 Act"). Thus, compared with "diversified" funds, it may invest a greater percentage of its assets in obligations of a small number of issuers. In general, the more the Trust invests in the securities of specific issuers or issues of a similar project type, the more the Trust is exposed to risks associated with investments in those issuers or types of projects. Also, the Trust may be more volatile than a more geographically diverse fund.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Trust Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Trust by showing changes in the Trust’s performance from year to year and by showing how the Trust’s average annual returns for the designated periods compare with those of a broad measure of market performance. The Trust's past performance (before and after taxes) is not necessarily an indication of how the Trust will perform in the future. Updated performance information is available at www.aquilafunds.com or by calling 800-437-1020 (toll-free).

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Trust by showing changes in the Trust's performance from year to year and by showing how the Trust's average annual returns for the designated periods compare with those of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

800-437-1020

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.aquilafunds.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Trust's past performance (before and after taxes) is not necessarily an indication of how the Trust will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

ANNUAL TOTAL RETURNS As of December 31 Class Y Shares 2002 - 2011

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

During the 10-year period shown in the bar chart, the highest return for a quarter was 5.51% (quarter ended September 30, 2009) and the lowest return for a quarter was -3.17% (quarter ended September 30, 2008).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

The highest return for a quarter was

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Sep. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

5.51%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

The lowest return for a quarter was

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(3.17%)

Index No Deduction for Fees, Expenses, Taxes [Text]

rr_IndexNoDeductionForFeesExpensesTaxes

This index is unmanaged and does not reflect deductions for Trust operating expenses or sales charges.

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

These returns are calculated using the highest individual Federal marginal income and capital gains tax rates in effect at the time of each distribution and redemption, but do not reflect state and local taxes.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown only for Class Y Shares.

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

These returns are calculated using the highest individual Federal marginal income and capital gains tax rates in effect at the time of each distribution and redemption, but do not reflect state and local taxes.  Actual after-tax returns will depend on your specific situation and may differ from those shown.  The total returns reflect reinvestment of dividends and distributions.  After-tax returns are shown only for Class Y Shares.  After-tax returns for other classes of shares will vary.

Caption

rr_AverageAnnualReturnCaption

Average Annual Total Returns for the Periods Ended December 31, 2011

TAX-FREE TRUST OF OREGON | Barclays Capital Quality Intermediate Municipal Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.55%

^[1]

5 Years

rr_AverageAnnualReturnYear05

5.68%

^[1]

10 Years

rr_AverageAnnualReturnYear10

5.06%

^[1]

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.00%

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

^[2]

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution (12b-1) Fee

rr_DistributionAndService12b1FeesOverAssets

0.15%

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Trust Operating Expenses

rr_NetExpensesOverAssets

0.76%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

475

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

633

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

805

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,305

1 Year

rr_AverageAnnualReturnYear01

5.45%

5 Years

rr_AverageAnnualReturnYear05

3.76%

10 Years

rr_AverageAnnualReturnYear10

4.27%

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution (12b-1) Fee

rr_DistributionAndService12b1FeesOverAssets

0.75%

Other Expenses

rr_OtherExpensesOverAssets

0.46%

Total Annual Trust Operating Expenses

rr_NetExpensesOverAssets

1.61%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

264

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

508

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

876

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,473

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

164

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

508

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

876

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,473

1 Year

rr_AverageAnnualReturnYear01

7.88%

5 Years

rr_AverageAnnualReturnYear05

3.72%

10 Years

rr_AverageAnnualReturnYear10

3.81%

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class I

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution (12b-1) Fee

rr_DistributionAndService12b1FeesOverAssets

0.15%

Other Expenses

rr_OtherExpensesOverAssets

0.41%

^[3]

Total Annual Trust Operating Expenses

rr_NetExpensesOverAssets

0.96%

Other Expenses, New Fund, Based on Estimates [Text]

rr_OtherExpensesNewFundBasedOnEstimates

Other Expenses of Class I Shares are based on estimated amounts for the current fiscal year.

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

98

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

306

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

531

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,178

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class Y

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management Fee

rr_ManagementFeesOverAssets

0.40%

Distribution (12b-1) Fee

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.21%

Total Annual Trust Operating Expenses

rr_NetExpensesOverAssets

0.61%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

62

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

195

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

340

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

762

Annual Return 2002

rr_AnnualReturn2002

9.20%

Annual Return 2003

rr_AnnualReturn2003

5.14%

Annual Return 2004

rr_AnnualReturn2004

3.94%

Annual Return 2005

rr_AnnualReturn2005

2.77%

Annual Return 2006

rr_AnnualReturn2006

3.78%

Annual Return 2007

rr_AnnualReturn2007

2.99%

Annual Return 2008

rr_AnnualReturn2008

(1.03%)

Annual Return 2009

rr_AnnualReturn2009

11.10%

Annual Return 2010

rr_AnnualReturn2010

1.33%

Annual Return 2011

rr_AnnualReturn2011

10.00%

1 Year

rr_AverageAnnualReturnYear01

10.00%

5 Years

rr_AverageAnnualReturnYear05

4.77%

10 Years

rr_AverageAnnualReturnYear10

4.85%

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class Y | After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

10.00%

5 Years

rr_AverageAnnualReturnYear05

4.77%

10 Years

rr_AverageAnnualReturnYear10

4.84%

TAX-FREE TRUST OF OREGON | Tax-Free Trust of Oregon Class Y | After Taxes on Distributions and Sales

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.84%

5 Years

rr_AverageAnnualReturnYear05

4.64%

10 Years

rr_AverageAnnualReturnYear10

4.75%

[1] This index is unmanaged and does not reflect deductions for Trust operating expenses or sales charges.

[2] Purchases of $1 million or more have no sales charge but a contingent deferred sales charge of up to 1% for redemptions within two years of purchase and up to 0.50 of 1% for redemptions during the third and fourth years after purchase.

[3] Other Expenses of Class I Shares are based on estimated amounts for the current fiscal year.

XML

TAX-FREE TRUST OF OREGON

RISK/RETURN

Investment Objective

The Trust’s objective is to provide you as high a level of current income exempt from Oregon state and regular Federal income taxes as is consistent with preservation of capital.

Fees and Expenses of the Trust

This table describes the fees and expenses that you may pay if you buy and hold shares of the Trust. You may qualify for sales charge discounts if you and your immediate family invest, or agree to invest in the future, at least $25,000 in the Trust or in other funds in the Aquila Group of Funds. More information about these and other discounts, as well as eligibility requirements for each share class, is available from your financial advisor and in "Alternative Purchase Plans” on page 23 of the Trust's Prospectus, "What are the sales charges for purchases of Class A Shares” on page 24 of the Prospectus, "Reduced Sales Charges for Certain Purchases of Class A Shares” on page 26 of the Prospectus, and “Purchase, Redemption, and Pricing of Shares” on page 50 of the Statement of Additional Information (the “SAI”).  No Class I Shares are currently outstanding.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees TAX-FREE TRUST OF OREGON	Tax-Free Trust of Oregon Class A		Tax-Free Trust of Oregon Class C	Tax-Free Trust of Oregon Class I	Tax-Free Trust of Oregon Class Y
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	4.00%		none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of redemption value or purchase price)	none	[1]	1.00%	none	none

Annual Trust Operating Expenses (Expenses that you pay each year as a percentage of your investment)

Annual Fund Operating Expenses TAX-FREE TRUST OF OREGON	Tax-Free Trust of Oregon Class A	Tax-Free Trust of Oregon Class C	Tax-Free Trust of Oregon Class I		Tax-Free Trust of Oregon Class Y
Management Fee	0.40%	0.40%	0.40%		0.40%
Distribution (12b-1) Fee	0.15%	0.75%	0.15%		none
Other Expenses	0.21%	0.46%	0.41%	[1]	0.21%
Total Annual Trust Operating Expenses	0.76%	1.61%	0.96%		0.61%

Example

This Example is intended to help you compare the cost of investing in the Trust with the cost of investing in other mutual funds.

The Example assumes that you invest $10,000 in the Trust for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Trust’s operating expenses remain the same. Six years after the date of purchase, Class C Shares automatically convert to Class A Shares.

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example TAX-FREE TRUST OF OREGON (USD $)	1 year	3 years	5 years	10 years
Tax-Free Trust of Oregon Class A	475	633	805	1,305
Tax-Free Trust of Oregon Class C	264	508	876	1,473
Tax-Free Trust of Oregon Class I	98	306	531	1,178
Tax-Free Trust of Oregon Class Y	62	195	340	762

You would pay the following expenses if you did not redeem your Class C Shares:

Expense Example, No Redemption (USD $)	1 year	3 years	5 years	10 years
TAX-FREE TRUST OF OREGON Tax-Free Trust of Oregon Class C	164	508	876	1,473

Portfolio Turnover

The Trust pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Trust shares are held in a taxable account. These costs, which are not reflected in annual Trust operating expenses or in the example, affect the Trust's performance. During the most recent fiscal year, the Trust's portfolio turnover rate was 15% of the average value of its portfolio.

Principal Investment Strategies

The Trust invests primarily in municipal obligations that pay interest exempt in the opinion of bond counsel from regular Federal income  tax and Oregon state personal income tax. In general, all or almost all of these obligations are issued by the State of Oregon, its counties and various other local authorities. We call these “Oregon Obligations.” These securities may include participation or other interests in municipal securities and variable rate demand notes.  Some Oregon Obligations, such as general obligation issues, are backed by the issuer’s taxing authority, while other Oregon Obligations, such as revenue bonds, are backed only by revenues from certain facilities or other sources and not by the issuer itself.

Under normal circumstances, at least 80% of the Trust’s net assets will consist of Oregon Obligations the income paid upon which will not be subject to the Federal alternative minimum tax on individuals.  These obligations can be of any maturity, but the Trust’s average portfolio maturity has traditionally been between 10 and 18 years.

At the time of purchase, the Trust’s Oregon Obligations must be of investment grade quality. This means that they must either

* be rated within the four highest credit ratings assigned by nationally recognized statistical rating organizations or,

* if unrated, be determined to be of comparable quality by the Sub-Adviser.

The Sub-Adviser selects obligations for the Trust’s portfolio to best achieve the Trust’s objective by considering various characteristics including quality, maturity and coupon rate.

The Trust may use derivatives, including futures contracts and options on futures contracts, for a variety of purposes, including to “hedge” or protect its portfolio from adverse movements in securities prices and interest rates.

Principal Risks

Market and Interest Rate Risk. The market prices of the Trust’s securities may go up or down, sometimes rapidly or unpredictably, due to general market conditions, such as real or perceived adverse economic or political conditions, inflation, changes in interest rates, lack of liquidity in the bond markets or adverse investor sentiment. When market prices fall, the value of your investment may go down. The value of your investment may also go down when interest rates rise. A rise in rates tends to have a greater impact on the prices of longer term securities.

Credit Risk. If an issuer or obligor of a security held by the Trust or a counterparty to a financial contract with the Trust defaults or is downgraded, or if the value of the assets underlying a security declines, the value of your investment will typically decline.

Rating Agency Risk. Investment grade debt securities may be downgraded by a major rating agency to below investment grade status, which would increase the risk of holding these securities. In addition, a rating may become stale in that it fails to reflect changes to an issuer’s financial condition. Ratings represent the rating agency’s opinion regarding the quality of the security and are not a guarantee of quality. Rating agencies may fail to make timely credit ratings in response to subsequent events. In addition, rating agencies are subject to an inherent conflict of interest because they are often compensated by the same issuers whose securities they grade.

Risks Associated with Investments in Oregon and Other Municipal Obligations. The Trust may be affected significantly by adverse economic, political or other events affecting Oregon and other municipal issuers.

Tax Risk. The income on the Trust’s Oregon Obligations and other municipal obligations could become subject to Federal and/or state income taxes due to noncompliant conduct by issuers, unfavorable legislation or litigation or adverse interpretations by regulatory authorities.

Liquidity Risk. Some securities held by the Trust may be difficult to sell, or illiquid, particularly during times of market turmoil. Illiquid securities may also be difficult to value. If the Trust is forced to sell an illiquid security to meet redemption requests or other cash needs, the Trust may be forced to sell the security at a loss.

Prepayment or Call Risk. Many issuers have a right to prepay their securities. If interest rates fall, an issuer may exercise this right, and the Trust could be forced to reinvest prepayment proceeds at a time when yields on securities available in the market are lower than the yield on the prepaid security. The Trust may also lose any premium it paid on the security.

Portfolio Selection Risk. The value of your investment may decrease if the Sub-Adviser’s judgment about the quality, relative yield, value or market trends affecting a particular security, industry, sector or region, or about interest rates, is incorrect.

Derivatives Risk. Using derivatives can increase losses and reduce opportunities for gains when market prices, interest rates or the derivative instruments themselves, behave in a way not anticipated by the Trust. Using derivatives also can have a leveraging effect (which may increase investment losses) and increase Trust volatility. Derivatives may be difficult to sell, unwind or value, and the counterparty may default on its obligations to the Trust. Recent legislation calls

for new regulation of the derivatives markets. The extent and impact of the regulation are not yet fully known and may not be for some time. New regulation of derivatives may make them more costly, may limit their availability, or may otherwise adversely affect their value or performance.

Leveraging Risk. The value of your investment may be more volatile if the Trust borrows or uses derivatives or other investments that have a leveraging effect on the Trust’s portfolio. This is because leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the Trust would otherwise have had. The Trust may also have to sell assets at inopportune times to satisfy its obligations.

The Trust is classified as a “non-diversified” investment company under the Investment Company Act of 1940 (the “1940 Act”). Thus, compared with “diversified” funds, it may invest a greater percentage of its assets in obligations of a small number of issuers. In general, the more the Trust invests in the securities of specific issuers or issues of a similar project type, the more the Trust is exposed to risks associated with investments in those issuers or types of projects.  Also, the Trust may be more volatile than a more geographically diverse fund.

Loss of money is a risk of investing in the Trust.

These risks are discussed in more detail later in the Prospectus or in the SAI.

Trust Performance

The following bar chart and table provide some indication of the risks of investing in the Trust by showing changes in the Trust’s performance from year to year and by showing how the Trust’s average annual returns for the designated periods compare with those of a broad measure of market performance. The Trust's past performance (before and after taxes) is not necessarily an indication of how the Trust will perform in the future. Updated performance information is available at www.aquilafunds.com or by calling 800-437-1020 (toll-free).

ANNUAL TOTAL RETURNS As of December 31 Class Y Shares 2002 - 2011

During the 10-year period shown in the bar chart, the highest return for a quarter was 5.51% (quarter ended September 30, 2009) and the lowest return for a quarter was -3.17% (quarter ended September 30, 2008).

Average Annual Total Returns for the Periods Ended December 31, 2011

Average Annual Total Returns TAX-FREE TRUST OF OREGON		1 Year	5 Years	10 Years
Tax-Free Trust of Oregon Class A		5.45%	3.76%	4.27%
Tax-Free Trust of Oregon Class C		7.88%	3.72%	3.81%
Tax-Free Trust of Oregon Class Y		10.00%	4.77%	4.85%
Tax-Free Trust of Oregon Class Y After Taxes on Distributions		10.00%	4.77%	4.84%
Tax-Free Trust of Oregon Class Y After Taxes on Distributions and Sales		7.84%	4.64%	4.75%
Barclays Capital Quality Intermediate Municipal Bond Index	[1]	8.55%	5.68%	5.06%

These returns are calculated using the highest individual Federal marginal income and capital gains tax rates in effect at the time of each distribution and redemption, but do not reflect state and local taxes.  Actual after-tax returns will depend on your specific situation and may differ from those shown.  The total returns reflect reinvestment of dividends and distributions.  After-tax returns are shown only for Class Y Shares.  After-tax returns for other classes of shares will vary.

[1] Purchases of $1 million or more have no sales charge but a contingent deferred sales charge of up to 1% for redemptions within two years of purchase and up to 0.50 of 1% for redemptions during the third and fourth years after purchase.

[1] Other Expenses of Class I Shares are based on estimated amounts for the current fiscal year.

[1] This index is unmanaged and does not reflect deductions for Trust operating expenses or sales charges.