Pricing Supplement Dated	9/10/2007	Filed pursuant to [X] Rule 424(b)(2) [ ] Rule 424(b)(5)
(To Prospectus dated February 16, 2006, and		Registration Statement No.	333-129763 and
Prospectus Supplement dated February 16, 2006)			333-129763-01
		CUSIP: 74254PTS1

Principal Life Insurance Company
Principal® Life CoreNotes® (Callable) (That are also Asset-Backed Securities) Issued Through and Obligations of
Principal Life Income Fundings Trust 2007-91 (the "Trust" and "Issuing Entity")

The description of this pricing supplement of the particular terms of the Principal® Life CoreNotes® offered hereby, and the Funding Agreement (specified below) issued by Principal Life Insurance Company (“Principal Life”) to the Trust, the payment obligations of which are fully and unconditionally guaranteed by the Guarantee (specified below) issued by Principal Financial Group, Inc. to the Trust, supplements the description of the general terms and provisions of the notes, the funding agreements and the guarantees set forth in the accompanying prospectus and prospectus supplement, to which reference is hereby made..

1. The Notes

Principal Amount:	TBD	Purchasing Agent Discount:	1.300%
Issue Price:	100.0%	Original Issue Date:	9/19/2007
Net Proceeds to the Trust:	TBD	Stated Maturity Date:	9/15/2015

Interest Payment Dates:	The 15th day of every sixth month commencing on 03/15/2008
Initial Interest Payment Date:	3/15/2008
Regular Record Date:	15 calendar days prior to the Interest Payment Date
Type of Interest Rate:	[X] Fixed Rate	[ ] Floating Rate
Interest Rate:	5.50%
Discount Note:	[ ]Yes	[X] No
Terms of Survivor’s Option:
Annual Put Limitation:		[X] $2,000,000 or 2%; or
		[ ] $_______ or __%
Individual Put Limitation:		[X] $250,000; or
		[ ] $______
Trust Put Limitation:		[X] 2%; or $______
Redemption Provisions:	[X]Yes	[ ] No.	If Yes,
Initial Redemption Date:	9/15/2009
Redemption:	[X] In whole only and not in part
	[ ] May be in whole or in part
Additional Other Terms:	Any redemption date will be an Interest Payment Date falling on or after the Initial Redemption Date
Repayment:	[ ]Yes	[X] No
Authorized Denominations:	$1,000

“Principal^®” is a registered service mark of Principal Financial Services, Inc. and is used under license.
“CoreNotes^®” is a registered service mark of Merrill Lynch & Co.

Ratings:

     The Notes issued under the Program are rated AA by Standard & Poor’s (“S&P”).

     Principal Life expects the Notes to be rated Aa2 by Moody’s Investors Service, Inc. (“Moody’s”).

Purchasing Agent(s) Purchasing Notes as Principal: [X] Yes  [ ] No  If Yes,

Purchasing Agent(s)	Principal Amount
Merrill Lynch		TBD
Total:		TBD

State of Organization of the Trust:	New York
Additional/Other Terms:	None
2. The Funding Agreement
Funding Agreement Issuer:	Principal Life Insurance Company
Funding Agreement No.:	5-19874
Deposit:	$15.0
Net Deposit:	TBD
Effective Date:	9/19/2007
Stated Maturity Date:	9/15/2015
Interest Payment Dates:	The 15th day of every sixth month commencing on 03/15/2008
Initial Interest Payment Date:	3/15/2008
Type of Interest Rate:	[X] Fixed Rate	[ ] Floating Rate
Interest Rate:	5.50%
Discount Funding Agreement:	[ ]Yes	[X] No
Terms of Survivor’s Option:
Annual Put Limitation:		[X] $2,000,000 or 2%; or
		[ ] $_______ or __%
Individual Put Limitation:		[X] $250,000; or
		[ ] $______
Trust Put Limitation:		[X] 2%; or $______
Redemption:	[X]Yes	[ ] No.	If Yes,
Initial Redemption Date:	9/15/2009
Redemption:	[X] In whole only and not in part
	[ ] May be in whole or in part
Additional Other Terms:	Any redemption date will be an Interest Payment Date falling on or after the Initial Redemption Date
Repayment:	[ ]Yes	[X] No

Ratings:

The Funding Agreement issued under the Program is rated AA by S&P. 
Principal Life expects the Funding Agreement to be rated Aa2 by Moody's.

Additional/Other Terms:	None
3. The Guarantee
Guarantee Issuer:	Principal Financial Group, Inc.
Effective Date:	9/19/2007
Additional/Other Terms:	None