What Are Tax-Deductible Contributions: Rules and 2026 Changes

Tax-deductible contributions are payments that lower the income the IRS taxes you on. They fall into two groups: donations to qualified charitable organizations, and deposits into tax-advantaged accounts like traditional IRAs, 401(k)s, and Health Savings Accounts. For 2026, the One, Big, Beautiful Bill Act reshapes the charitable side in particular, adding a deduction for people who take the standard deduction and a new floor that trims the benefit for those who itemize.

Which Charities Qualify

A gift only counts if it goes to an organization the IRS recognizes under Section 170 of the Internal Revenue Code.¹ Most qualifying groups are 501(c)(3) nonprofits, meaning the IRS has confirmed they operate for religious, charitable, scientific, literary, or educational purposes with no profits going to private individuals.² Veterans’ organizations, fraternal societies (when the gift is used for charitable purposes), nonprofit cemeteries, and government entities receiving contributions for a public purpose also qualify.

You can confirm a group’s status through the IRS Tax Exempt Organization Search before you give.³

What never qualifies: political campaigns, lobbying groups, civic leagues, social clubs, labor unions, chambers of commerce, and gifts to individuals no matter how sympathetic the circumstances.⁴ Money you route through a qualified charity but earmark for a specific person also fails the test.

Types of Charitable Gifts You Can Deduct

Cash

Cash covers gifts by check, credit card, electronic transfer, and payroll deduction. Cash contributions to public charities are deductible up to 60% of your adjusted gross income for the year.⁴ Anything above that ceiling carries forward for up to five years.⁵

Household Goods and Other Property

Clothing, furniture, and electronics are deductible if they are in good used condition or better.⁴ Value them at fair market value, meaning what a willing buyer would pay a willing seller, not what you originally paid.⁶ For most used household items, that is the thrift-store price.

Vehicles work differently. If the charity sells your car, your deduction is generally limited to the sale proceeds rather than the Blue Book value.⁷ Fair market value applies only when the charity uses the vehicle in its programs, significantly improves it, or transfers it to a low-income individual below market price.

Appreciated Stocks and Mutual Funds

Donating shares you have held for more than a year is one of the most efficient ways to give. You deduct the full market value on the transfer date and avoid capital gains tax on the appreciation.⁸ The AGI cap here is 30% rather than 60%.⁴ If you held the shares for a year or less, your deduction is limited to what you paid for them.

Out-of-Pocket Volunteer Costs

You cannot deduct the value of your time or professional services, ever.⁴ You can deduct unreimbursed expenses directly tied to volunteering: supplies for an event, a required uniform, mileage. The charitable mileage rate is 14 cents per mile and has been fixed by statute since 1998, so it does not adjust for inflation.

Retirement and Health Account Contributions

Deductions are not limited to charity. Certain retirement and health-care accounts also reduce your taxable income, and these deductions work whether or not you itemize.

Traditional IRAs

For 2026, the contribution limit is $7,500, rising to $8,600 if you are 50 or older thanks to a new $1,100 catch-up amount.⁹ Traditional IRA contributions are deducted above the line, so they lower AGI even if you take the standard deduction.¹⁰

If you or your spouse are covered by a workplace retirement plan, the deduction phases out at higher incomes. For 2026, a single filer covered by a workplace plan loses the full deduction once modified AGI exceeds $91,000. For a married couple filing jointly where the contributing spouse is covered, the phase-out runs from $129,000 to $149,000.⁹ If neither spouse is covered at work, income does not affect deductibility.

401(k) and 403(b) Plans

Employer-sponsored plans are the largest deductible savings vehicle for most workers. In 2026, you can defer up to $24,500 of salary into a 401(k), 403(b), or similar plan. The general catch-up for those 50 and older is $8,000, and a higher catch-up of $11,250 applies if you are between 60 and 63.⁹ These deferrals are excluded from taxable wages on your W-2, so the tax benefit shows up automatically in a traditional (non-Roth) plan.

Health Savings Accounts

An HSA lets you set aside pre-tax money for medical expenses if you are enrolled in a qualifying high-deductible health plan. For 2026, the contribution limit is $4,400 for self-only coverage and $8,750 for family coverage, with an extra $1,000 available at age 55 or older.¹¹ The health plan must carry a minimum annual deductible of $1,700 for individual coverage or $3,400 for family coverage, with out-of-pocket maximums of $8,500 and $17,000.

HSA contributions you make directly (outside of payroll) are deducted above the line, similar to traditional IRA contributions.¹² Employer contributions are excluded from your income. The money grows tax-free and comes out tax-free for qualified medical expenses.

What Changed for 2026

A New Deduction for Standard-Deduction Filers

Starting in 2026, taxpayers who take the standard deduction can claim an above-the-line deduction of up to $1,000 ($2,000 for married couples filing jointly) for cash gifts to qualifying public charities.¹³ It covers cash, checks, credit card gifts, electronic transfers, and payroll deductions. It does not cover contributions to donor-advised funds.

A 0.5% AGI Floor for Itemizers

If you itemize, only the portion of your total charitable contributions that exceeds 0.5% of your adjusted gross income is deductible. On a $200,000 AGI, the first $1,000 of giving produces no tax benefit. The floor applies to every type of charitable gift, cash or property, and to whatever recipient. Contributions carried forward from prior years are also subject to the floor when applied in 2026 or later.

When You Get Something in Return

When you receive goods or services back from the charity, only the amount above the fair market value of what you got is deductible. A $200 ticket to a gala where the dinner is worth $75 produces a $125 deduction. Charity auction bids follow the same logic, and you need to be able to show you knew the item was worth less than what you paid.¹⁴

For contributions above $75, charities are legally required to give you a written disclosure of the fair market value of anything you received.¹⁵ Token items like a bumper sticker or a tote bag do not reduce your deduction.

Documentation You Need to Keep

Every cash donation needs a written record regardless of size: a bank statement, cancelled check, or receipt from the charity showing date, amount, and name.¹⁶ For any single gift of $250 or more, you also need a contemporaneous written acknowledgment from the charity, meaning you have it in hand by the time you file. That acknowledgment must state the amount, whether you received anything in exchange, and, if so, a good-faith estimate of value.¹⁷

If your total non-cash donations for the year exceed $500, you must file Form 8283 with your return.¹⁸ Any single item or group of similar items valued above $5,000 requires a formal written appraisal from a qualified appraiser who is not the donor, the charity, or an employee of either. Overstating property value carries stiff accuracy-related penalties, and for donated property the usual “reasonable cause” defense is unavailable.¹⁹

Contribution Deadlines

Charitable donations must be completed by December 31 to count for that tax year. Mailed checks use the postmark date, so a check postmarked December 31 counts even if the charity receives it in January. Credit card charges count on the processing date, not when you pay the bill.

Retirement accounts work differently. 401(k) and 403(b) deferrals must be withheld from payroll by December 31. Traditional IRA and HSA contributions have extra time: you have until the April 15 tax filing deadline to fund an account for the prior tax year.

How to Claim the Deductions

Retirement and HSA contributions either come off your W-2 automatically (through payroll) or appear as adjustments on Form 1040. No itemizing required.

Charitable gifts above the new $1,000/$2,000 non-itemizer threshold still require itemizing on Schedule A.²⁰ Itemizing pays off when your total deductible expenses (charitable gifts, state and local taxes up to $10,000, mortgage interest, and medical expenses above 7.5% of AGI) exceed the 2026 standard deduction: $16,100 for single filers, $32,200 for married filing jointly, or $24,150 for heads of household.¹³ Non-cash gifts over $500 add Form 8283 on top of Schedule A.¹⁸

If your annual giving normally lands just below the itemizing threshold, consider bunching two years of donations into one. You itemize in the year you bunch and take the standard deduction the next. A donor-advised fund makes this easier: you get the full deduction in the year you fund it, then recommend grants to charities over time.

1
Office of the Law Revision Counsel. 26 USC 170 – Charitable, etc., Contributions and Gifts
2
Internal Revenue Service. Exemption Requirements – 501(c)(3) Organizations
3
Internal Revenue Service. Tax Exempt Organization Search
4
Internal Revenue Service. Publication 526 (2025), Charitable Contributions
5
eCFR. 26 CFR 1.170A-10 – Charitable Contributions Carryovers of Individuals
6
Internal Revenue Service. Publication 561 (12/2025), Determining the Value of Donated Property
7
Internal Revenue Service. IRS Guidance Explains Rules for Vehicle Donations
8
Office of the Law Revision Counsel. 26 U.S. Code 170 – Charitable, etc., Contributions and Gifts
9
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
10
Internal Revenue Service. Traditional IRAs
11
Internal Revenue Service. Expanded Availability of Health Savings Accounts Under the OBBBA
12
Internal Revenue Service. Publication 969 (2025), Health Savings Accounts and Other Tax-Favored Health Plans
13
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
14
Internal Revenue Service. Charity Auctions
15
Office of the Law Revision Counsel. 26 U.S. Code 6115 – Disclosure Related to Quid Pro Quo Contributions
16
Internal Revenue Service. Charitable Contributions – Written Acknowledgments
17
Internal Revenue Service. Substantiating Charitable Contributions
18
Internal Revenue Service. Instructions for Form 8283 (Rev. December 2025)
19
Internal Revenue Service. 20.1.5 Return Related Penalties
20
Internal Revenue Service. About Schedule A (Form 1040), Itemized Deductions