Deductions & credits
What a gift really costs after tax, under the 2026 giving rules
A charitable donation tax savings calculator for firm websites: clients see the tax saved and the net cost of a gift at their marginal rate, with the 2026 floor, cap and non-itemizer rules explained.
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How much tax does a charitable donation save in 2026?
For itemizers, roughly the gift times the marginal tax rate, but from 2026 only gifts above 0.5% of AGI2026 · IRS count, and top-bracket filers' benefit is capped at 35%2026 · IRS. Non-itemizers can deduct cash gifts of $1,000 ($2,000 married filing jointly)2026 · IRS. A $5,000 gift at a 24% rate saves about $1,200, so its net cost is $3,800.
Early December, before year-end giving deadlines
Giving Tuesday, year-end appeals and a profitable year all land in December. Clients want to know whether a gift is deductible, how much it saves and whether they should give now or next year. The 2026 changes make the question harder: a new floor for itemizers, a cap for the top bracket and a new deduction for people who take the standard deduction.
What the client types into a search box
“how much will my donation save me on taxes this year”
How a client works through it
Enter the gift amount
The cash amount the client plans to give this year.
Enter the marginal rate
The client's combined federal and state marginal rate, or the federal rate alone.
See savings and net cost
Tax savings, the net cost of the gift and the savings per $1,000 given appear at once.
Ask for a giving plan
Clients can send the estimate to your firm to check the 2026 rules against their return.
What lands in your inbox
When a client asks your firm to review the result, the request arrives as a contact record with their inputs and results attached, by email and, on paid plans, by webhook to your CRM.
Received
Gift size and marginal rate tell you the stakes. Large gifts at high rates suggest bunching, donor-advised fund or appreciated-asset strategies. Clients aged 70½ or older with IRAs may benefit from a qualified charitable distribution instead. Small gifts by non-itemizers point to the new standard-deduction giving rule.
What do tax savings and net cost tell a donor?
Tax Savings is the gift multiplied by the marginal rate, assuming the full gift is deductible. Net Cost of Gift is what the donor is really out of pocket. The charity still receives the full amount; only the donor's cost falls. Savings per $1,000 makes the rate tangible for clients who think in round numbers.
The result is a ceiling. The 2026 floor reduces the deductible amount for itemizers, top-bracket filers should enter 35% instead of 37%, and clients who don't itemize get the deduction only up to the non-itemizer limit. The calculator's disclaimer spells this out, and those adjustments are what the firm brings.
Results shown: Tax Savings · Gift Amount · Net Cost of Gift · Marginal Tax Rate · Savings per $1,000.
The floor in practice
A client with $200,000 of AGI itemizes and gives $5,000. Only gifts above 0.5% of AGI count, and 0.5% of $200,000 is $1,000, so $4,000 is deductible. At a 24% rate, that saves $960 rather than the $1,200 a simple multiplication suggests. The net cost of the gift is $4,040.
Why do year-end giving questions belong with your firm?
The best charitable strategies depend on the whole return: whether the client itemizes, whether bunching two years of gifts helps, whether appreciated stock or a qualified charitable distribution from an IRA beats cash. None of that fits in a calculator, but the calculator gets the client asking, and the request arrives in December, while the decision can still change.
For advisory firms it opens donor-advised fund and gifting conversations with clients who have concentrated stock or large IRAs.
Follow-ups this request opens
- Compare bunching two years of gifts into one itemized year
- Review gifting appreciated stock instead of cash
- Consider a qualified charitable distribution from an IRA for eligible clients
- Set up or fund a donor-advised fund before year-end
What this calculator leaves out
- Assumes the full gift is deductible at the rate entered; the 2026 AGI floor is not subtracted automatically.
- AGI percentage limits on large gifts are not applied.
- Gifts of appreciated assets, qualified charitable distributions and donor-advised funds are not modeled.
- Does not check whether itemizing beats the standard deduction.
Platform disclaimer shown under the calculator: Estimates only. Assumes the full gift is deductible at your marginal rate, which generally requires itemizing and staying within AGI limits. From 2026, itemized charitable deductions only count above 0.5% of AGI and top-bracket (37%) filers get a benefit capped at 35%; non-itemizers can deduct up to $1,000 ($2,000 married filing jointly) of cash gifts. Gifts of appreciated assets have additional rules. Not tax advice — consult a tax professional.
Compliance note for firms
Charitable planning advice is tax advice: recommending bunching or a donor-advised fund in an email is written advice under Circular 230 §10.37 and should account for the 2026 floor and cap and the client's itemizing position. Advisers recommending a donor-advised fund sponsor should also follow their own disclosure obligations.
Not legal advice. See our disclaimer and the guide to compliance for client calculators.
2026 figures this page relies on
| Figure | Value | Tax year | Source |
|---|---|---|---|
| Cash charitable deduction for non-itemizers | $1,000 ($2,000 married filing jointly) | 2026 | IRS, effective 2026 |
| Floor on itemized charitable deductions | 0.5% of AGI | 2026 | IRS, effective 2026 |
| Benefit cap for 37%-bracket itemizers | capped at 35% | 2026 | IRS, effective 2026 |
The same values drive the calculator. Full list on the 2026 figures page.
Terms your client sees in the calculator
These definitions appear in the calculator's collapsible Definitions block, so clients don't have to call to ask what a label means.
- Tax savings
- The reduction in income tax from deducting the gift: the gift amount times your marginal tax rate in this calculator. A $5,000 gift at a 24% rate saves $1,200. It assumes the full gift is deductible, which generally requires itemizing, staying within AGI limits and, from 2026, clearing the AGI floor described below.
- Marginal tax rate
- The rate applied to your last dollar of income, combining federal and any state rate. A deduction saves tax at this rate because it removes income from the top of your bracket. It is higher than your average or effective rate, which is total tax divided by total income.
- Net cost of gift
- The gift amount minus the tax savings: what the donation actually costs you after the deduction. A $5,000 gift that saves $1,200 in tax has a net cost of $3,800. The charity still receives the full $5,000; the tax savings reduce only your out-of-pocket cost.
- Itemized deduction
- Claiming specific deductible expenses, such as charitable gifts, mortgage interest and state and local taxes, instead of the standard deduction. It only helps when your itemized total exceeds the standard deduction, so a charitable gift may produce little or no savings if you would not otherwise itemize.
- Adjusted gross income (AGI)
- Total income minus certain adjustments, such as pre-tax retirement contributions. Charitable deduction limits are set as percentages of AGI and vary by the type of gift and the type of charity; amounts above the limit can generally be carried forward to later years. This calculator does not apply those limits.
- AGI floor on charitable deductions
- Starting in 2026, itemized charitable deductions count only to the extent they exceed 0.5% of AGI (IRS, effective 2026). With $200,000 of AGI, the first $1,000 of gifts produces no deduction. This calculator does not subtract the floor, so savings on smaller gifts may be overstated.
In our glossary: Itemized deductions · Marginal tax rate · Qualified charitable distribution · Adjusted gross income
Charitable Giving Tax Savings calculator: questions from firms and clients
Can people who take the standard deduction deduct donations in 2026?
Yes, cash gifts to qualifying charities of $1,000 ($2,000 married filing jointly)2026 · IRS. Gifts to donor-advised funds generally don't qualify for this deduction.
What is the 0.5% floor?
From 2026, itemized charitable deductions count only to the extent they exceed 0.5% of AGI2026 · IRS. The calculator does not subtract the floor automatically, so clients should reduce the gift amount by it for a closer estimate.
What rate should a top-bracket client enter?
35%, because the benefit for 37% filers is capped at 35%2026 · IRS. Entering 37% would overstate the savings.
Does the calculator handle gifts of stock?
No. Appreciated stock held more than a year can be deducted at fair market value and avoids capital gains tax, which often beats cash. That is a planning conversation for the firm.
Does giving more always save more?
Savings rise with the gift, but the net cost rises too. The calculator makes clear that a deduction reduces the cost of giving; it never makes giving profitable.
When should we feature this calculator?
From November through December. Many firms add it to a year-end planning email.
Does it include state tax savings?
Only if the client enters a combined federal and state marginal rate.
Which plan includes it?
Network, with the other tax calculators. See pricing.
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Clients who ask this usually ask next
Marginal Tax Rate
what tax bracket am I in and what happens if I earn more
1040 Federal Income Tax
how much federal tax will I owe this year
Required Minimum Distribution (RMD)
how much do I have to take out of my IRA this year
All “Deductions & credits” calculators · Everything in Taxes
Next entry
Answer the December question before the client calls
Embed the Charitable Giving Tax Savings calculator on your firm's site in an afternoon and receive requests with the numbers already filled in.
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