2026 Charitable Deduction Calculator: What the New 0.5% Floor and Non-Itemizer Deduction Mean for Your Gifts
Tax year 2026 rewrites the charitable deduction on both sides of the itemizing line — and both changes are new this year. Non-itemizers get a permanent deduction for cash gifts, up to $1,000 ($2,000 married filing jointly). Itemizers face a new 0.5%-of-AGI floor that absorbs the first slice of each year's giving. Federal taxes only, tax year 2026 (returns filed 2027); an educational estimate, not tax advice.
Charitable deduction (2026)
Examples: a single non-itemizer giving $1,500 cash deducts $1,000; an itemizer with $200,000 AGI giving $10,000 deducts $9,000.00 after the $1,000.00 floor.
What is new for 2026
The One Big Beautiful Bill Act (P.L. 119-21) changed the charitable deduction in two directions at once, and tax year 2026 is when both rules bite. If you don't itemize, you gain something: a permanent deduction of up to $1,000 ($2,000 on a joint return) for cash gifts to public charities — and unlike the temporary pandemic-era non-itemizer deduction, this one has no sunset written into the statute. If you do itemize, you lose a slice: a new 0.5%-of-AGI floor (IRC §170(b)(1)(I)) means the first 0.5% of AGI you give each year produces no deduction at all. Which fork you are in decides everything, which is why the calculator asks that question first.
If you don't itemize: the $1,000/$2,000 deduction
The §170(p) deduction covers cash gifts to §170(b)(1)(A) public charities — checks, card payments, payroll giving — up to $1,000 for single, head of household, and married-filing-separately filers, or $2,000 on a joint return. Two exclusions catch people by surprise: gifts to donor-advised funds (§4966(d)(2)) and to supporting organizations (§509(a)(3)) never count, and non-cash donations (goods, stock, mileage) do not qualify on this line. All examples below are computed by the same engine as the calculator:
| Scenario (computed) | Cap | Deduction |
|---|---|---|
| Single, $1,500 cash to a church | $1,000 | $1,000 |
| Married filing jointly, $3,000 cash | $2,000 | $2,000 |
| Single, $500 to a donor-advised fund | $1,000 | $0 (DAF gifts excluded) |
One thing this deduction is not: a reduction of your AGI. It is claimed on Schedule 1-A and flows to Form 1040 line 13b, subtracted after adjusted gross income. Calling it "above-the-line" — as many summaries do — is wrong, and the difference is practical: because AGI and MAGI are unchanged, this deduction cannot move any income-based phase-out, credit, or benefit keyed to them. The MAGI Calculator covers where those thresholds live, and the OBBBA changes guide explains Schedule 1-A itself.
If you itemize: the new 0.5% AGI floor
Starting in 2026, itemized charitable contributions are deductible only to the extent they exceed 0.5% of your contribution base (AGI computed without any net operating loss carryback). The floor eats the first slice of every year's giving — it is not a one-time threshold. Computed at $200,000 of AGI:
| Gifts for the year | 0.5% floor | Lost to the floor | Deductible |
|---|---|---|---|
| $10,000 | $1,000.00 | $1,000.00 | $9,000.00 |
| $800 | $1,000.00 | $800.00 | $0.00 |
When gifts fall entirely below the floor — the second row — the year's deduction is $0.00. The disallowed amount is not necessarily gone forever: Amounts disallowed by the 0.5% floor carry forward under §170(d)(1)-consistent rules (generally 5 years). The calculator flags the carryforward whenever the floor absorbs anything. Two scope caveats: AGI percentage ceilings still apply on top of the 0.5% floor. And when you give both cash and appreciated property, the ordering rules make capital-gain property absorb the floor first and cash last — this simple tool does not model mixed-property ordering.
A mechanical consequence worth understanding: because the floor is applied per year, spreading $10,000 across several years crosses the floor several times, while giving it in a single year crosses the floor once. That is why "bunching" donations gets discussed alongside this rule — an observation about arithmetic, not a recommendation.
The top-bracket haircut: at most 35¢ per $1
A third 2026 change is often misdescribed as a charitable rule but is not: the rewritten IRC §68 trims all itemized deductions — charitable, SALT, mortgage interest, the lot — for taxpayers whose taxable income puts them in the 37% bracket (taxable income above $640,600 single / $768,700 married filing jointly for 2026). The trim is 2/37 of the smaller of total itemized deductions or the excess over the bracket start, which caps the value of a marginal dollar of deductions at 35 cents. Computed for a married couple with $50,000 of itemized deductions and $900,000 of taxable income: the §68 haircut is $2,702.70, leaving $47,297.30 of itemized deductions. Enter taxable income and total itemized deductions in the calculator's itemizer fork to run this check — it is modeled for single and married-filing-jointly returns only.
Which fork are you in?
You itemize only when your Schedule A deductions beat the standard deduction — for 2026 that hurdle is $16,100 (single), $32,200 (married filing jointly), or $24,150 (head of household). Most filers take the standard deduction and therefore belong in the non-itemizer fork, where the new $1,000/$2,000 deduction applies on top of it. The 2026 Standard Deduction Calculator computes your exact hurdle (including the age-65/blind add-ons), and the 2026 tax brackets guide shows the rate schedule your deductions are working against.
Frequently asked questions
Is the new $1,000/$2,000 non-itemizer charitable deduction above-the-line?
No — and that distinction matters. It is claimed on Schedule 1-A and flows to Form 1040 line 13b, which means it is subtracted AFTER adjusted gross income. It never reduces your AGI or MAGI, so it cannot help you qualify for any benefit, credit, or phase-out that is keyed to AGI or MAGI.
Do gifts to donor-advised funds count toward the non-itemizer deduction?
No. The §170(p) non-itemizer deduction covers cash gifts to §170(b)(1)(A) public charities only. Gifts to donor-advised funds (§4966(d)(2)) and supporting organizations (§509(a)(3)) are excluded by statute, and non-cash gifts do not qualify at all. In the worked example, $500 given to a donor-advised fund produces a $0 deduction on this line.
What is the new 0.5% AGI floor for itemizers?
Starting with tax year 2026, itemizers can only deduct charitable contributions to the extent they exceed 0.5% of AGI (new IRC §170(b)(1)(I)). At $200,000 of AGI the floor is $1,000.00: give $10,000 and $9,000.00 is deductible; give $800 and the deduction is $0.00, because the gifts never clear the floor. Amounts disallowed by the 0.5% floor carry forward under §170(d)(1)-consistent rules (generally 5 years).
What is the 35-cent cap on charitable deductions?
It is not actually charitable-specific. The rewritten IRC §68, effective 2026, trims ALL itemized deductions by 2/37 of the amount by which taxable income plus itemized deductions exceed the 37% bracket start ($640,600 single / $768,700 married filing jointly). The arithmetic caps the benefit of a marginal dollar of deductions at 35 cents for top-bracket filers.
Does bunching donations still make sense in 2026?
The 0.5% floor applies each year, so spreading the same total giving across more years crosses the floor more times and loses more of it. Consolidating several years of gifts into one year crosses the floor once. That is an educational observation about how the mechanics work — whether it fits your situation is a question for a tax professional.
Not tax advice: an educational estimate for federal income tax only — no state or local tax, no AMT modeling, no NIIT — for tax year 2026 (returns filed 2027). The itemizer fork assumes gifts are within the AGI percentage ceilings and does not model mixed cash/property ordering. Figures verified against primary sources as of 2026-08-18; Congress can amend P.L. 119-21 and the IRS can issue further guidance. Values are processed locally in your browser and never transmitted. Consult a tax professional for your situation. See the methodology page.