The provision for income taxes consisted of the following (thousands of dollars):

	Years Ended
	June 27, 2021		June 28, 2020
Currently (recoverable) payable:
Federal	$	557	$	(1,869	)
State		420		(176	)
Foreign		2,661		3,368
		3,638		1,323
Deferred tax provision		1,473		(3,589	)
	$	5,111	$	(2,266	)

The items accounting for the difference between income taxes computed at the Federal statutory tax rate and the provision for income taxes were as follows:

	Years Ended
	June 27, 2021			June 28, 2020
U.S. statutory rate		21.0	%		21.0	%
State taxes, net of Federal tax benefit		1.1			2.1
Foreign subsidiaries		1.0			(5.8	)
Federal net operating loss carry-back statutory rate differential		—			11.7
Global intangible low-taxed income		0.5			(4.4	)
Research and development tax credit		(2.3	)		9.9
Non-controlling interest		(5.9	)		(2.3	)
Uncertain tax positions		—			(4.0	)
Stock based compensation		0.1			(1.8	)
Other		(0.9	)		1.5
		14.6	%		27.9	%

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("the CARES Act") was enacted. The CARES Act contains several income tax provisions, as well as other measures, that are intended to assist businesses impacted by the economic effects of the COVID-19 pandemic. The CARES Act includes a five-year carryback allowance for taxable net operating losses generated in tax years 2018 through 2020, our fiscal years 2019 through 2021. We recorded an expected benefit for the carryback of our fiscal year 2020 federal net operating loss. As we carried the losses back to years beginning before January 1, 2018, the tax benefit was a result of the rate differential between the previous 35% federal tax rate and current statutory rate of 21%.

The components of deferred tax (liabilities) assets were as follows (thousands of dollars):

	June 27, 2021			June 28, 2020
Unrecognized pension and postretirement benefit plan liabilities	$	659		$	617
Accrued warranty		499			517
Payroll-related accruals		3,044			2,259
Stock-based compensation		306			389
Inventory reserve		964			964
Environmental reserve		327			296
Repair and maintenance supply parts reserve		284			510
Allowance for doubtful accounts		118			118
Lease Liability		799			882
Right of Use Assets		(799	)		(882	)
Credit carry-forwards		1,544			3,860
Postretirement obligations		(294	)		(357	)
Accumulated depreciation		(4,663	)		(5,063	)
Accrued pension obligations		459			472
Joint ventures		1,187			1,167
Other		618			741
	$	5,052		$	6,490

Deferred income tax balances reflect the effects of temporary differences between the carrying amounts of assets and liabilities and their tax basis and are stated at enacted tax rates expected to be in effect when taxes are actually paid or recovered.

Federal credit carry-forwards at June 27, 2021 resulted in future benefits of approximately $1.4 million and expire between 2030 and 2031. We currently anticipate having sufficient Federal taxable income to offset these credit carry-forwards. State credit carry-forwards at June 27, 2021 resulted in future benefits of approximately $194,000 and expire at varying times between 2025 and 2035. A valuation allowance of $153,000 has been recorded as of June 27, 2021, due to our assessment of the future realization of certain credit carry-forward benefits. We do not currently anticipate having sufficient state taxable income to offset these credit carry-forwards. Foreign income before the provision for income taxes was $5.1 million in 2021 and $7.7 million in 2020.

The total liability for unrecognized tax benefits was $1.6 million as of each of June 27, 2021 and June 28, 2020 and was included in Other Long-term Liabilities in the accompanying Consolidated Balance Sheets. This liability includes approximately $1.5 million of unrecognized tax benefits at each of June 27, 2021 and June 28, 2020 and approximately $146,000 of accrued interest at June 27, 2021 and $147,000 at June 28, 2020. This liability does not include an amount for accrued penalties. The amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate was approximately $1.1 million at June 27, 2021 and at June 28, 2020. We recognize interest and penalties related to unrecognized tax benefits in the provision for income taxes.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows for the years ended June 27, 2021 and June 28, 2020 (thousands of dollars):

	Years Ended
	June 27, 2021			June 28, 2020
Unrecognized tax benefits, beginning of year	$	1,462		$	1,138
Gross increases – tax positions in prior years		76			140
Gross increases – current period tax positions		207			245
Tax years closed		(287	)		(61	)
Unrecognized tax benefits, end of year	$	1,458		$	1,462

We or one of our subsidiaries files income tax returns in the United States (Federal), Wisconsin (state), Michigan (state) and various other states, Mexico and other foreign jurisdictions. Tax years open to examination by tax authorities under the statute of limitations include fiscal 2018 through 2021 for Federal, fiscal 2017 through 2021 for most states and calendar 2016 through 2020 for foreign jurisdictions.