PRINCIPAL FUNDS, INC. AMENDED AND RESTATED DISTRIBUTION PLAN AND AGREEMENT CLASS R-4 DISTRIBUTION PLAN AND AGREEMENT made as of December 14, 2010, by and between PRINCIPAL FUNDS, INC., a Maryland corporation (the "Fund"), and PRINCIPAL FUNDS...

PRINCIPAL FUNDS, INC.
AMENDED AND RESTATED
DISTRIBUTION PLAN AND AGREEMENT
CLASS R-4
	DISTRIBUTION PLAN AND AGREEMENT made as of December 14, 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 R-4 Class shares of each Series
	identified in Appendix A, attached hereto (the “Series”), a class of shares of Principal Funds, Inc.
	(the “Fund”).
2.	The Fund has entered into a Distribution Agreement on behalf of the Fund Principal Funds
	Distributor, Inc. (“Distributor”), under which the Distributor will use all reasonable efforts, consistent
	with its 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 the Distributor to enter into Service Agreements with
	other selling dealers and with banks or other financial institutions to provide shareholder services to
	existing R-4 Class 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 Distributor pursuant to
	the Distribution Agreement and Paragraphs 2 and 3 hereof, all with respect to R-4 Class shares of
	a Series of the Fund, R-4 Class of each Series shall pay to the Distributor a fee at the annual rate
	of 0.10% (or such lesser amount as the Fund Directors may, from time to time, determine) of the
	average daily net assets of R-4 Class 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

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	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 R-4 Class shares. The 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 R-4 Class 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 the Distributor with respect to any expenses incurred in connection with the
	distribution of R-4 Class 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 R-4 Class 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 R-4 Class 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 R-4 Class 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 R-4 Class 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 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 R-4 Class shares.

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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/ Xxxx X. Xxxxxxx

By: ____________________________________

Xxxx X. Xxxxxxx, CEO & President 

              /s/ Xxxx X. Xxxxxx

By: ____________________________________

Xxxx X. Xxxxxx, Vice President & Secretary 

PRINCIPAL FUNDS DISTRIBUTOR, INC. 

              /s/ Xxxxxxx X. Beer 

By: ____________________________________

Xxxxxxx X. Beer, Executive Vice-President 

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PRINCIPAL FUNDS, INC.
APPENDIX A
SERIES
Bond & Mortgage Securities Fund	Mortgage Securities Fund
Bond Market Index Fund	Preferred Securities Fund
Core Plus Bond Fund I	Principal Capital Appreciation Fund
Disciplined LargeCap Blend Fund	Principal LifeTime 2010 Fund
Diversified International Fund	Principal LifeTime 2015 Fund
Equity Income Fund	Principal LifeTime 2020 Fund
Government & High Quality Bond Fund	Principal LifeTime 2025 Fund
Income Fund	Principal LifeTime 2030 Fund
Inflation Protection Fund	Principal LifeTime 2035 Fund
International Emerging Markets Fund	Principal LifeTime 2040 Fund
International Equity Index Fund	Principal LifeTime 2045 Fund
International Fund I	Principal LifeTime 2050 Fund
International Growth Fund	Principal LifeTime 2055 Fund
LargeCap Blend Fund II	Principal LifeTime Strategic Income Fund
LargeCap Growth Fund	Real Estate Securities Fund
LargeCap Growth Fund I	XXX Balanced Portfolio
LargeCap Growth Fund II	XXX Conservative Balanced Portfolio
LargeCap S&P 500 Index Fund	XXX Conservative Growth Portfolio
LargeCap Value Fund	XXX Flexible Income Portfolio
LargeCap Value Fund I	XXX Strategic Growth Portfolio
LargeCap Value Fund III	Short-Term Income Fund
MidCap Blend Fund	SmallCap Blend Fund
MidCap Growth Fund	SmallCap Growth Fund
MidCap Growth Fund III	SmallCap Growth Fund I
MidCap S&P 400 Index Fund	SmallCap Growth Fund II
MidCap Value Fund I	SmallCap S&P 600 Index Fund
MidCap Value Fund III	SmallCap Value Fund
Money Market Fund	SmallCap Value Fund II

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