About the Charitable Donation Tax Calculator
This charitable donation tax calculator estimates how much a gift to charity actually reduces your federal income tax in 2026, and what the donation really costs you after tax. It compares itemizing with taking the standard deduction plus the new non-itemizer charitable deduction, and picks whichever gives the bigger write-off.
It is for anyone planning year-end giving, deciding between donating cash or appreciated stock, or considering “bunching” several years of donations into one year. Donating long-term appreciated shares lets you deduct their full market value and also avoid capital gains tax, which the calculator includes.
Rules modelled for tax year 2026 after the One Big Beautiful Bill Act: itemized charitable deductions only count above 0.5% of AGI; non-itemizers can deduct up to $1,000 ($2,000 joint) of cash gifts to public charities (not donor-advised funds); cash gifts are limited to 60% of AGI and appreciated property to 30%; and itemized deductions for taxpayers in the 37% bracket are worth at most 35% (the law cuts itemized deductions by 2/37; the calculator applies this as a flat 35% benefit, which is exact when all of your gifts fall in the 37% bracket). Standard deductions are $16,100 single, $32,200 joint and $24,150 head of household. The calculator assumes gifts go to public charities, uses your bracket as a flat rate, and does not model carryovers from earlier years.
With the default inputs, the federal income tax saved is $240.00. Change any value above to recalculate instantly.
How to use the charitable donation tax calculator
- 1Choose your filing status and enter your adjusted gross income.
- 2Enter cash donations and the market value of any appreciated stock you gave.
- 3Enter your other itemized deductions such as mortgage interest and SALT.
- 4Pick your federal tax bracket and capital gains rate.
- 5Compare the tax saved with the true after-tax cost of your gifts.
Formula and method
Deductible gifts are first limited by AGI: appreciated property to 30% of AGI and cash to 60% of AGI less the property already counted; any excess carries forward for five years. If you itemize, only gifts above 0.5% of AGI are deductible. If you take the standard deduction, you can add up to $1,000 ($2,000 joint) of cash gifts to qualifying public charities.
The calculator compares both routes and uses the larger total deduction. Your tax saving is the increase in deductions compared with what you would claim without giving — max(standard, other itemized) — times your marginal rate, capped at 35% for itemizers in the 37% bracket. Donating stock held over a year also avoids the capital gains tax you would pay if you sold it (gain × your capital gains rate). The approximation assumes the deduction does not move you into a lower bracket.
- Std
- Standard deduction for your filing status (2026)
- Other
- Itemized deductions other than charity
- Gifts
- Cash and stock gifts after the 60% / 30% AGI limits
Worked examples
Single filer giving $5,000 who doesn’t itemize
Itemizing would total $12,000 + ($5,000 − $600 floor) = $16,400, less than the $16,100 standard deduction plus the $1,000 non-itemizer deduction ($17,100). So the gifts add $1,000 of deduction, saving $240 at 24%, and the $5,000 gift costs $4,760.
Married couple giving cash and appreciated stock
Gifts total $25,000; after the $1,250 floor, $23,750 is deductible, giving $53,750 of itemized deductions versus a $32,200 standard deduction. The extra $21,550 saves $5,172 at 24%, and donating the stock avoids $900 of capital gains tax, so $25,000 of giving costs $18,928.
High earner in the 37% bracket
After the $4,000 floor, $46,000 of the $50,000 gift is deductible. Because itemized deductions are worth at most 35% in the top bracket, the saving is $46,000 × 35% = $16,100, so the gift costs $33,900.
Frequently asked questions
Can I deduct charitable donations if I take the standard deduction?+
From 2026, yes: non-itemizers can deduct up to $1,000 ($2,000 for joint filers) of cash gifts to qualifying public charities. Gifts to donor-advised funds and private foundations do not qualify.
What is the 0.5% floor on charitable deductions?+
Starting in 2026, itemizers can only deduct charitable gifts that exceed 0.5% of their AGI. With $200,000 of AGI, the first $1,000 of donations gives no deduction.
How much can I deduct for charitable donations?+
Cash gifts to public charities are deductible up to 60% of AGI, and gifts of appreciated long-term property up to 30% of AGI. Amounts over the limits can be carried forward for five years.
Is it better to donate stock or cash?+
Donating stock held more than a year is usually better: you deduct its full market value and never pay capital gains tax on the growth. Donate losing positions by selling first and giving the cash so you can claim the loss.
What records do I need for a charitable deduction?+
Keep a bank record or receipt for every cash gift, and a written acknowledgment from the charity for any single gift of $250 or more. Non-cash gifts over $500 need Form 8283.
What is bunching charitable donations?+
Bunching means combining two or more years of planned giving into one tax year, often through a donor-advised fund, so your itemized deductions exceed the standard deduction that year.
Tax results are estimates based on published rules and simplified assumptions. They are not tax advice — check official guidance or a tax professional for your situation.