PRINCIPAL FUNDS, INC.
AMENDED AND RESTATED
DISTRIBUTION PLAN AND AGREEMENT
CLASS J SHARES
	DISTRIBUTION PLAN AND AGREEMENT made as of May 4, 2010, by and between
PRINCIPAL FUNDS, INC., a Maryland corporation (the "Fund"), and PRINCIPAL FUNDS
DISTRIBUTOR, INC., a Washington corporation (the "Underwriters").
1.	This Distribution and Service Plan (the “Plan”), when effective in accordance with its terms, shall
	be the written plan contemplated by Securities and Exchange Commission Rule 12b-1 under
	the Investment Company Act of 1940, as amended (the “Act”) for the Class J shares of each
	Series identified in Appendix A, attached hereto (the “Series”), a class of shares of Principal I
	Funds, Inc. (the “Fund”).
2.	The Fund has entered into a Distribution Agreement on behalf of the Fund with Princor
	Financial Services Corporation and Principal Funds Distributor, Inc. (each individually a
	“Distributor” and collectively the “Distributors”), under which each Distributor will use all
	reasonable efforts, consistent with their other business, to secure purchasers of shares of each
	Series of the Fund (the “Shares”). Such efforts may include, but neither are required to include
	nor are limited to, the following: (1) formulation and implementation of marketing and
	promotional activities, such as mail promotions and television, radio, newspaper, magazine and
	other mass media advertising; (2) preparation, printing and distribution of sales literature
	provided to the Fund’s shareholders and prospective shareholders; (3) preparation, printing and
	distribution of prospectuses and statements of additional information of the Fund and reports to
	recipients other than existing shareholders of the Fund; (4) obtaining such information,
	analyses and reports with respect to marketing and promotional activities as a Distributor may,
	from time to time, deem advisable; (5) making payment of sales commission, ongoing
	commissions and other payments to brokers, dealers, financial institutions or others who sell
	Shares pursuant to Selling Agreements; (6) paying compensation to registered representatives
	or other employees of a Distributor who engage in or support distribution of the Fund’s Shares;
	(7) paying compensation to, and expenses (including overhead and telephone expenses) of, a
	Distributor; (8) providing training, marketing and support to dealers and others with respect to
	the sale of Shares; (9) receiving and answering correspondence from prospective shareholders
	including distributing prospectuses, statements of additional information, and shareholder
	reports; (10) providing of facilities to answer questions from prospective investors about
	Shares; (11) complying with federal and state securities laws pertaining to the sale of Shares;
	(12) assisting investors in completing application forms and selecting dividend and other
	account options; (13) providing of other reasonable assistance in connection with the
	distribution of the Fund’s shares; (14) organizing and conducting of sales seminars and making
	payments in the form of transactional compensation or promotional incentives; and (15) such
	other distribution and services activities as the Fund determines may be paid for by the Fund
	pursuant to the terms of this Plan and in accordance with Rule 12b-1 of the Act.
3.	The Distribution Agreement also authorizes each Distributor to enter into Service Agreements
	with other selling dealers and with banks or other financial institutions to provide shareholder
	services to existing Class J shareholders, including without limitation, services such as
	furnishing information as to the status of shareholder accounts, responding to telephone and
	written inquiries of shareholders, and assisting shareholders with tax information.
4.	In consideration for the services provided and the expenses incurred by the Distributors
	pursuant to the Distribution Agreement and Paragraphs 2 and 3 hereof, all with respect to
	Class J shares of a Series of the Fund, Class J shares of each Series shall pay to the

	Distributors a fee at the annual rate of 0.45%, except for the Money Market Fund which shall
	pay to the Distributors a fee at the annual rate of 0.25% (or such lesser amount as the Fund
	Directors may, from time to time, determine) of the average daily net assets of Class J shares
	of such Series. This fee shall be accrued daily and paid monthly or at such other intervals as
	the Fund Directors shall determine. The determination of daily net assets shall be made at the
	close of business each day throughout the month and computed in the manner specified in the
	Fund’s then current Prospectus for the determination of the net asset value of the Fund’s Class
	J shares. A Distributor may use all or any portion of the fee received pursuant to this Plan to
	compensate securities dealers or other persons who have engaged in the sale of Class J
	shares or to pay any of the expenses associated with other activities authorized under
	Paragraphs 2 and 3 hereof.
5.	The Fund presently pays, and will continue to pay, a management fee to Principal Management
	Corporation (the “Manager”) pursuant to a Management Agreement between the Fund and the
	Manager (the “Management Agreement”). It is recognized that the Manager may use its
	management fee revenue, as well as its past profits or its resources from any other source, to
	make payment to a Distributor with respect to any expenses incurred in connection with the
	distribution of Class J shares, including the activities referred to in Paragraph 2 hereof. To the
	extent that the payment of management fees by the Fund to the Manager should be deemed to
	be indirect financing of any activity primarily intended to result in the sale of Class J shares
	within the meaning of Rule 12b-1, then such payment shall be deemed to be authorized by this
	Plan.
6.	This Plan shall not take effect until it has been approved (a) by a vote of at least a majority (as
	defined in the Act) of the outstanding Class J shares of the Series of the Fund and (b) by votes
	of the majority of both (i) the Board of Directors of the Fund, and (ii) those Directors of the Fund
	who are not "interested persons" (as defined in the Act) of the Fund and who have no direct or
	indirect financial interest in the operation of this Plan or any agreements related to this Plan (the
	"Disinterested Directors"), cast in person at a meeting called for the purpose of voting on this
	Plan or such agreements.
7.	Unless sooner terminated pursuant to Paragraph 6, this Plan shall continue in effect for a period
	of twelve months from the date it takes effect and thereafter shall continue in effect so long as
	such continuance is specifically approved at least annually in the manner provided for approval
	of this Plan in Paragraph 6(b).
8.	A representative of each Underwriter shall provide to the Board and the Board shall review at
	least quarterly a written report of the amounts so expended and the purposes for which such
	expenditures were made.
9.	This Plan may be terminated at any time by vote of a majority of the Disinterested Directors, or
	by vote of a majority (as defined in the Act) of the outstanding Class J shares of the Series of
	the Fund.
10. Any agreement of the Fund related to this Plan shall be in writing and shall provide:
	A.	That such agreement may be terminated at any time, without payment of any penalty, by
		vote of a majority of the Disinterested Directors or by a vote of a majority (as defined in the
		Act) of the outstanding Class J shares of the Series of the Fund on not more than sixty (60)
		days' written notice to any other party to the agreement); and
	B.	That such agreement shall terminate automatically in the event of its assignment.

11.	While the Plan is in effect, the Fund’s board of directors shall satisfy the fund governance
	standards as defined in Securities and Exchange Commission Rule 0-1(a)(7).
12.	This Plan does not require the Manager or either Distributor to perform any specific type or level
	of distribution activities or to incur any specific level of expenses for activities primarily intended
	to result in the sale of Class J shares.
13.	The Fund shall preserve copies of this Plan and any related agreements and all reports made
	pursuant to Paragraph 8, for a period of not less than six years from the date of the Plan, or the
	agreements or such report, as the case may be, the first two years in an easily accessible
	place.
14.	This Plan may not be amended to increase materially the amount of Fees provided for in
	Paragraph 4 hereof unless such amendment is approved in the manner provided for initial
	approval in Paragraph 6 hereof and no other material amendment to this Plan shall be made
	unless approved in the manner provided for initial approval in Paragraph 6(b) hereof.
IN WITNESS WHEREOF, the parties hereto have executed and delivered this Plan as of the
first date written above.

Principal Funds, Inc. 

                  /s/ N. M. Everett

By______________________________________ 

   Nora M. Everett, CEO & President 

Principal Funds Distributor, Inc. 

                /s/ Michael J. Beer

By______________________________________ 

    Michael J. Beer, Executive Vice President 

PRINCIPAL FUNDS, INC.
APPENDIX A
Series
Bond and Mortgage Securities Fund	Money Market Fund III
Bond Market Index Fund	Mortgage Securities Fund
Diversified International Fund	Preferred Securities Fund
Global Diversified Income Fund	Principal LifeTime 2010 Fund
Government & High Quality Bond Fund	Principal LifeTime 2020 Fund
High Quality Intermediate-Term Bond Fund	Principal LifeTime 2030 Fund
Income Fund	Principal LifeTime 2040 Fund
Inflation Protection Fund	Principal LifeTime 2050 Fund
International Emerging Markets Fund	Principal LifeTime Strategic Income Fund
International Growth Fund	Real Estate Securities Fund
LargeCap Blend Fund I	SAM Balanced Portfolio Fund
LargeCap Blend Fund II	SAM Conservative Balanced Portfolio Fund
LargeCap Growth Fund	SAM Conservative Growth Portfolio Fund
LargeCap Growth Fund I	SAM Flexible Income Portfolio Fund
LargeCap Growth Fund II	SAM Strategic Growth Portfolio Fund
LargeCap S&P 500 Index Fund	Short-Term Bond Fund
LargeCap Value Fund	Short-Term Income Fund
LargeCap Value Fund III	SmallCap Blend Fund
MidCap Blend Fund	SmallCap Growth Fund
MidCap Growth Fund	SmallCap Growth Fund I
MidCap Growth Fund III	SmallCap Growth Fund II
MidCap S&P 400 Index Fund	SmallCap S&P 600 Index Fund
MidCap Value Fund	SmallCap Value Fund
MidCap Value Fund I	SmallCap Value Fund III
MidCap Value Fund II	SmallCap Value Fund II