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Charitable Deduction Calculator

What your 2026 gifts to charity save in federal tax under the 2025 tax law

Updated October 2026

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From 2026, people who take the standard deduction can also deduct up to $1,000 of cash gifts to charity ($2,000 on a joint return); itemizers lose the first 0.5% of AGI of their gifts. A married couple with $150,000 of AGI who give $3,000 and have $20,000 of other itemized deductions still take the $32,200 standard deduction and add a $2,000 charitable deduction on top of the standard deduction, which saves about $440 in federal tax in the 22% bracket.

How the Deduction Is Calculated in 2026

1. Non-itemizers. Section 170(p), as amended by section 70424 of P.L. 119-21, allows a deduction “not in excess of $1,000 ($2,000 in the case of a joint return)” for cash gifts to public charities, on top of the standard deduction. Gifts to a donor-advised fund or a supporting organization do not count, and the 0.5% floor does not apply to this deduction.

2. Itemizers. New section 170(b)(1)(I) allows charitable gifts “only to the extent that the aggregate of such contributions exceeds 0.5 percent of the taxpayer’s contribution base.” For most people the contribution base is AGI, so at $150,000 of AGI the first $750 of gifts is not deductible. Cash gifts are still limited to 60% of AGI.

3. The 35% cap. Rewritten section 68 reduces itemized deductions by 2/37 of the lesser of the deductions or the amount by which taxable income plus those deductions exceeds the start of the 37% bracket. In the 37% bracket, each deducted dollar saves 35 cents instead of 37.

Worked example. A married couple with $150,000 of AGI, $3,000 of cash gifts and $20,000 of other itemized deductions. Itemizing gives $20,000 + ($3,000 − $750) = $22,250, below the $32,200 standard deduction. So they take the standard deduction plus the $2,000 non-itemizer deduction. Taxable income falls from $117,800 to $115,800, saving 22% × $2,000 = $440.

2026 Rules and Limits at a Glance

Rule (P.L. 119-21)2026 amountWho it affects
Non-itemizer deduction, IRC 170(p)Up to $1,000; $2,000 joint; cash to public charities onlyAnyone taking the standard deduction
0.5% floor, IRC 170(b)(1)(I)First 0.5% of AGI of gifts not deductibleItemizers
Cash limit, IRC 170(b)(1)(G)60% of AGI, now permanentVery large givers
Itemized deduction limit, IRC 68Reduced by 2/37; worth 35% at mostTaxable income in the 37% bracket ($640,600 single, $768,700 joint)
Standard deduction (Rev. Proc. 2025-32)$16,100 single, $32,200 joint, $24,150 head of householdEveryone who does not itemize

All of these apply to taxable years beginning after December 31, 2025, so they first show up on 2026 returns filed in 2027.

What to Enter

Enter AGI from your expected 2026 return, cash gifts (checks, cards, payroll deduction), and the other itemized deductions you would claim after their own limits: state and local taxes up to the SALT cap, mortgage interest and medical costs above 7.5% of AGI. The calculator compares itemizing with the standard deduction plus the non-itemizer deduction and picks the lower tax.

Five Households Compared

Household (2026)Better choiceCharity deductionTax savedSaved per dollar given
Married, $150,000 AGI, $3,000 cash, $20,000 other itemizedStandard + non-itemizer deduction$2,000$44015%
Same couple, gifts to a donor-advised fundStandard + non-itemizer deduction$0$00%
Single, $60,000 AGI, $800 cash, no other itemizedStandard + non-itemizer deduction$800$9612%
Married, $300,000 AGI, $20,000 cash, $30,000 other itemizedItemize$18,500$3,91220%
Single, $1,000,000 AGI, $100,000 cash, $40,000 other itemizedItemize$95,000$33,25033%

The $300,000 couple saves about 20 cents per dollar: $1,500 of their $20,000 is lost to the 0.5% floor and another $2,200 only lifts their itemized total up to the standard deduction, so $16,300 saves 24%. The $1,000,000 single filer saves exactly 35% of the $95,000 deducted, the cap in section 68.

Bunching, Donor-Advised Funds and QCDs

The floor and the new non-itemizer deduction change the math on bunching two or three years of gifts into one year. Bunching still helps a household near the standard deduction, but each bunched year now loses 0.5% of AGI, and the years in between can use the $1,000 or $2,000 deduction, though not for gifts to a donor-advised fund. Qualified charitable distributions from an IRA at 70½ or older are excluded from income instead of deducted, so neither the floor nor the cap touches them.

What the Calculator Does Not Cover

Gifts of property (stock, real estate, goods) and their 30% and 20% limits, carryforwards of excess gifts, gifts to private foundations, business gifts by corporations (which face their own new 1% floor), state income tax, and other 2026 deductions that sit outside itemizing, such as the deduction for seniors. It treats AGI as the contribution base.

Common Mistakes

Assuming the $2,000 covers a donor-advised fund. It does not. Forgetting the 0.5% floor when estimating an itemized deduction: at $400,000 of AGI the first $2,000 of gifts saves nothing. Expecting 37% savings in the top bracket; section 68 caps it at 35%. Counting noncash items toward the non-itemizer deduction, which is cash only. Missing receipts: any single gift of $250 or more needs a written acknowledgment from the charity.

Frequently Asked Questions

Can I deduct charitable donations if I take the standard deduction in 2026?
Yes. Starting in 2026 you can deduct up to $1,000 of cash gifts to public charities ($2,000 on a joint return) on top of the standard deduction.
What is the 0.5% floor on charitable deductions?
From 2026, itemizers can deduct charitable gifts only to the extent they exceed 0.5% of AGI. At $100,000 of AGI the first $500 of gifts is not deductible.
Does the 0.5% floor apply to the non-itemizer deduction?
No. Section 170(p) is figured without regard to the floor, so a couple can deduct the full $2,000.
Do donor-advised fund gifts count for the $1,000 deduction?
No. Gifts to donor-advised funds and supporting organizations are excluded from the non-itemizer deduction, though they still count if you itemize.
What is the 35% cap on itemized deductions?
Section 68 reduces itemized deductions by 2/37 of the amount in the 37% bracket, so each deducted dollar saves at most 35 cents starting in 2026.
When do the new charitable rules take effect?
For taxable years beginning after December 31, 2025: gifts made in 2026, reported on returns filed in 2027.
Is the $1,000 charitable deduction adjusted for inflation?
No. The statute sets $1,000 and $2,000 with no inflation adjustment.

How to Use This Calculator

  1. Choose a filing status — the joint cap is $2,000; others $1,000.
  2. Enter AGI — it sets the 0.5% floor and the 60% limit.
  3. Enter cash gifts — checks, cards and payroll giving in 2026.
  4. Enter other itemized deductions — SALT, mortgage interest, medical.
  5. Read the result — which path wins and the tax saved.
📚 Sources & References
  1. [1] Public Law 119-21 (July 4, 2025), secs. 70111, 70424 and 70425, 139 Stat. 72 (govinfo, accessed Oct 22 2026). www.govinfo.gov
  2. [2] U.S. Code. 26 U.S.C. 170, as amended (Cornell LII, accessed Oct 22 2026). www.law.cornell.edu
  3. [3] IRS. Revenue Procedure 2025-32, 2026 tax brackets and standard deduction (Oct 9, 2025). www.irs.gov
  4. [4] IRS. One, Big, Beautiful Bill provisions (accessed Oct 22 2026). www.irs.gov
✅ Editorial Standards — Every calculator is built from peer-reviewed formulas and official data sources, editorially reviewed for accuracy, and updated regularly. Read our full methodology · About the author