Audit & assurance

    Does a private foundation need an audit?

    Private foundations file Form 990-PF every year, but an audit is a separate question. Here's when one is required, when it is a board choice, and the federal rules an auditor will look at.

    Free initial consultation · No obligation

    • Last reviewed October 10, 2026
    • Sources linked below

    Does a private foundation need an audit?

    Not under federal law: Form 990-PF does not require audited financial statements. A state can require one, such as California at $2,000,000 in gross revenue, and banks, donors or bylaws can too. Massachusetts exempts 990-PF filers. Your Virtual CPA, a licensed CPA firm that performs audits, reviews and compilations, can confirm your requirement. Request a free consultation.

    Federal rules: Form 990-PF, but no audit mandate

    Every private foundation files Form 990-PF. It is due by the 15th day of the 5th month after year end. The Form 990-PF instructions do not require audited financial statements, and the Internal Revenue Code does not either.

    The instructions do require foundation managers to send a copy of Form 990-PF to state Attorneys General where state law requires it. That includes the state of the principal office and the state of incorporation. Those states may have their own reporting rules.

    When an audit is required anyway

    • California. Gov. Code §12586(e) requires audited statements for charitable corporations and trustees that report to the Attorney General with gross revenue of $2,000,000 or more, excluding government grants and contracts that require an accounting. An audit committee is also required.
    • Massachusetts. The Attorney General exempts private foundations that file Form 990-PF from its audit and review rule.
    • New York and other states. Requirements depend on how the foundation is registered. Check with the state charities office. Our state audit threshold table covers the general rules.
    • Banks and lenders. A credit line or loan agreement may require audited or reviewed statements.
    • Donors and partners. Gift agreements, donor-advised arrangements or co-funders may ask for audited statements.
    • Bylaws and board policy. Many foundations require an annual audit in their own governing documents.

    Federal rules an auditor will look at

    Excise tax on net investment income. Under IRC §4940, the rate is 1.39% for tax years beginning after December 20, 2019. The House proposed tiered rates in 2025, but the enacted law kept 1.39%.

    Minimum distribution. A non-operating foundation must pay out its distributable amount. That starts with the minimum investment return: 5% of the fair market value of noncharitable-use assets, less acquisition debt. Uncorrected shortfalls face a 30% excise tax under §4942.

    Self-dealing. Sales, leases, loans, providing goods or services, and paying compensation between the foundation and a disqualified person are generally acts of self-dealing under §4941, with listed exceptions. Indirect self-dealing is also prohibited. An audit tests related-party activity, so it can surface these early.

    For a full overview, see the IRS Life Cycle of a Private Foundation.

    How it works with us

    Best for: family and independent foundations whose state, bank, donor or board requires audited or reviewed statements.

    1. Free initial consultation. Share your state registrations, your last Form 990-PF and what is driving the request.
    2. Fees quoted upfront, in writing. Transparent, fair fees in an engagement letter that names the report type.
    3. Independence check. We confirm independence before we accept an audit or review.
    4. One request list. Investment statements, grant files, board minutes and related-party information.
    5. Fieldwork, done remotely. We confirm investment balances and test grants and expenses.
    6. Report. We present results to the board and issue the report.

    We can also prepare the foundation's Form 990-PF, subject to independence rules.

    Private foundation requirements at a glance

    RequirementApplies whenSource
    Federal audit of financial statementsNot required by the IRC or Form 990-PFForm 990-PF instructions
    File Form 990-PFEvery year, by the 15th day of the 5th month after year endForm 990-PF instructions
    Send a copy of 990-PF to state Attorneys GeneralWhere state law requires itForm 990-PF instructions
    California auditGross revenue of $2,000,000 or more (government grants requiring an accounting excluded)Gov. Code §12586(e)
    Massachusetts audit or reviewNot required for 990-PF filersMA Attorney General
    Excise tax on net investment income1.39% of net investment incomeIRC §4940 (IRS)
    Minimum distributionDistributable amount based on 5% of noncharitable-use assets; 30% tax on shortfallsIRC §4942 (IRS)
    Self-dealing prohibitionSales, leases, loans, services or compensation involving a disqualified person (exceptions apply)IRC §4941 (IRS)
    Audit by agreementWhen a lender, donor or your bylaws require itYour loan, gift agreement or bylaws

    Expert CPAs. Personal attention.

    Not sure if your foundation needs an audit? Share your state registrations and the request in a free initial consultation and we'll tell you what applies.

    Frequently asked questions

    Not under federal tax law. Neither the Internal Revenue Code nor the Form 990-PF instructions require audited financial statements. An audit can still be required by a state, such as California at $2,000,000 in gross revenue, or by a bank, a donor agreement or your own bylaws.

    It can. California Government Code §12586(e) requires audited financial statements for charitable corporations and trustees that report to the Attorney General and have gross revenue of $2,000,000 or more in a fiscal year. Government grants and contracts that require an accounting are excluded from that amount. The audited statements must be available to the Attorney General and the public within nine months after year end.

    No. The Massachusetts Attorney General says private foundations that file Form 990-PF are exempt by regulation from its audit and review requirement.

    It is 1.39% of net investment income under Internal Revenue Code §4940(a), for tax years beginning after December 20, 2019. The 2025 federal tax law did not change this rate. The tax is reported on Form 990-PF and is subject to estimated tax payments.

    A non-operating private foundation must make qualifying distributions equal to its distributable amount. That amount starts with the minimum investment return, which is 5% of the fair market value of noncharitable-use assets (less acquisition debt), with certain adjustments. Shortfalls left uncorrected face a 30% excise tax under §4942.

    Some boards choose one for governance. An audit tests investment balances, grant payments and related-party activity, which can help the board spot self-dealing and payout issues early. A review is a lower-cost alternative that some boards and funders accept. Your board decides.