California Donation Tax Deduction: AGI Limits and Records

You can claim a California charitable donation tax deduction only if you itemize on your state return, reporting your gifts on Schedule CA (540) and carrying the total to Form 540, line 18. California generally follows federal rules under Internal Revenue Code Section 170, but it caps cash gifts at 50% of adjusted gross income instead of 60%, limits conservation easement deductions and carryovers more tightly, and reduces total itemized deductions for higher earners.

You Have to Itemize

No itemizing, no deduction. Your itemized total has to beat California’s standard deduction before it saves you anything. For 2025, that standard deduction is $5,706 for single filers and married filing separately, and $11,412 for joint filers, heads of household, and qualifying surviving spouses.¹

Those thresholds sit well below the federal standard deduction, so plenty of Californians itemize on the state return while taking the standard deduction federally. If that’s you, complete a federal Schedule A as though you were itemizing federally and use those figures as the starting point for your Schedule CA.² Attach that federal Schedule A to your Form 540.

What Counts as a Deductible Donation

California recognizes the same qualified organizations the federal government does: nonprofits organized for religious, educational, scientific, literary, or charitable purposes, plus government entities receiving gifts for exclusively public purposes.³ Cash, securities, real estate, and other property can all qualify.

Several common payments don’t. The value of your time or services isn’t deductible. Raffle tickets, event tickets, and membership dues are deductible only to the extent the payment exceeds the fair market value of what you got back. Buy a $200 gala ticket where the dinner is worth $75, and your deductible gift is $125.

Appreciated Property

Donating long-term appreciated assets like stock or real estate held more than one year lets you deduct the full fair market value without paying capital gains tax on the appreciation. The deduction for these gifts is capped at 30% of federal AGI.

Vehicle Donations

Cars come with their own rules. If the charity sells the vehicle without significantly using or improving it, your deduction is what the charity actually got for it. Sale above $500: deduct the sale price. Sale at or below $500: deduct the lesser of fair market value or $500. The charity has to send you a written acknowledgment within 30 days of the sale, listing the sale price, the vehicle identification number, and whether you received anything in return.³

College Access Tax Credit

Contributions to the California College Access Tax Credit Fund can generate a state tax credit, but you can’t also deduct the credited amount as a charitable donation. Subtract the credited portion from your charitable deduction on Schedule CA, line 11, column B.²

How Much You Can Deduct: AGI Limits

California caps the deduction as a percentage of your federal AGI, and its ceilings are lower than the federal ones in two important places.

Cash to public charities: 50% of federal AGI. The federal limit is 60%, so a fully maxed federal cash deduction has to be reduced on the California side.²
Capital gain property to public charities: 30% of federal AGI, matching federal.
Qualified conservation easements: 30% of federal AGI. Federal law allows 50%, so this is another mandatory downward adjustment.²
Cash to private foundations: 30% of federal AGI.

Anything above the cap in a given year carries forward for up to five years. One trap: the federal carryover window for conservation easements is 15 years, but California allows only five.² If you’re carrying a large easement deduction forward federally, the California piece may run out first.

The High-Income Reduction

California cuts total itemized deductions for higher earners under Revenue and Taxation Code Section 17077. Your itemized total shrinks by 6% of the amount your AGI exceeds these thresholds:⁴

Single or married filing separately: $100,000
Head of household: $150,000
Married filing jointly or surviving spouse: $200,000

The reduction applies to the entire itemized pool, not just charitable gifts. A married couple filing jointly with $250,000 in AGI loses 6% of $50,000, or $3,000, from their itemized total. The federal version of this cap was suspended through 2025 by the Tax Cuts and Jobs Act. California never adopted the suspension.

Carrying Forward What You Can’t Deduct This Year

Excess contributions carry forward for five years, subject to the same percentage caps in each carryover year. Keep a running record by contribution type: cash, capital gain property, and conservation easements each have their own limits and their own carryover math.

This becomes real when you make a large one-time gift. Donate appreciated real estate and the 30% AGI cap may spread the actual tax benefit across two or three returns. On the California side, adjust your carryover on Schedule CA, line 13 whenever the state and federal carryover amounts diverge because of California’s lower caps or its shorter easement window.²

Records You Need to Keep

Missing paperwork is the quickest way to lose the deduction in an audit. The rules scale with the gift.

Cash

Every cash gift needs a paper trail: a canceled check, credit card statement, or receipt from the charity. For any single contribution of $250 or more, you also need a written acknowledgment from the organization stating the amount and whether you received goods or services in return.⁵ Get the acknowledgment before you file. A bank record alone won’t do at or above $250.

Noncash Property

If your total noncash contributions exceed $500, file IRS Form 8283 with your return.⁶ The form has two sections:

Section A covers donated items or groups of similar items valued at $5,000 or less, plus publicly traded securities of any value.
Section B covers items valued above $5,000 and requires a qualified appraisal by a qualified appraiser, signed and dated no earlier than 60 days before the donation and no later than the filing deadline (including extensions) for the return claiming the deduction.⁷

Publicly traded securities are the exception to the appraisal rule. Their value is easy to pin down from market data, so they go in Section A no matter the amount.

Reporting the Deduction on Schedule CA

The filing process is federal figures first, California adjustments second.

Start with federal Schedule A. Already itemizing federally? You have it. Taking the federal standard deduction but itemizing for California? Fill out a federal Schedule A as if you were itemizing and attach it to the California return.⁸

Transfer those amounts to Schedule CA (540), Part II. Federal amounts go in column A, lines 1 through 16. Columns B and C hold the California-specific adjustments.² For charitable contributions:

Line 11 (cash or check gifts): If your federal deduction relied on the 60% AGI limit and exceeds California’s 50%, put the difference in column B.
Line 12 (noncash gifts): Enter differences here for conservation easements (federal 50% versus California 30%) and any other noncash variations.
Line 13 (carryover from prior years): If a federal carryover has expired under California’s shorter window, enter the expired amount in column B.

The Part II result flows to Form 540, line 18. That figure is your California itemized deduction, replacing the standard deduction on your return.⁸

Part-Year Residents and Nonresidents

If you lived in California only part of the year or earned California-source income as a nonresident, you file Form 540NR and use Schedule CA (540NR). Charitable contributions are not California-source deductions, so they get prorated based on the ratio of your California income to your total income from all sources.⁹

That ratio comes from Part IV of Schedule CA (540NR). If 40% of your total income was California-source, roughly 40% of your itemized deductions reduce your California taxable income. The California-specific AGI caps and the high-income reduction still apply to the pre-proration amounts.

Penalties for Inflating a Donation’s Value

Overvalued noncash donations draw heavy scrutiny from both federal and California enforcement. The Franchise Tax Board applies accuracy-related penalties when a claimed value significantly exceeds actual worth:¹⁰

Substantial valuation misstatement (claim is 150% or more of correct value): 20% penalty on the portion of underpaid tax caused by the overstatement.
Gross valuation misstatement (claim is 200% or more of correct value): 40% penalty on the underpaid portion.

Those penalties come on top of the additional tax you’ll owe after the deduction is reduced. For high-value noncash gifts, the qualified appraisal requirement exists partly as your protection. A credentialed, independent appraiser and a complete appraisal report in your files is the strongest defense if the FTB questions what you claimed.

1
Franchise Tax Board. 2025 Instructions for Form 540 Personal Income Tax Booklet
2
Franchise Tax Board. 2025 Instructions for Schedule CA (540) California Adjustments – Residents
3
Office of the Law Revision Counsel. 26 USC 170 – Charitable, Etc., Contributions and Gifts
4
California Legislative Information. California Revenue and Taxation Code Section 17077
5
Internal Revenue Service. Charitable Contributions Written Acknowledgments
6
Internal Revenue Service. Form 8283 – Noncash Charitable Contributions
7
Internal Revenue Service. Publication 561 – Determining the Value of Donated Property
8
Franchise Tax Board. 2025 Instructions for Form 540 California Resident Income Tax Return
9
Franchise Tax Board. 2025 Instructions for Schedule CA (540NR) California Adjustments – Nonresidents or Part-Year Residents
10
Franchise Tax Board. FTB Publication 1024 – Penalty Reference Chart