Charitable Contribution Tax Deduction Calculator 2026

Quick answer: the charitable contribution tax deduction calculator below estimates how much your 2026 donations cut your federal tax. It runs the standard deduction and itemizing side by side and picks whichever leaves you with the lower bill. In 2026, cash gifts up to $1,000 ($2,000 on a joint return) count even if you don’t itemize. Donated items, stock and volunteer miles only count when you itemize on Schedule A.

Not tax advice. This article is general educational information. For advice about your situation, talk with a qualified tax professional. IRS rules can change, and your facts matter.

Every year, millions of people give to charity and then ask the same question at tax time: how much will charitable donations reduce taxes? The answer depends on four things. Whether you itemize or take the standard deduction. How you value what you gave (cash versus property). What records you kept. And the yearly limits, which are tied to your adjusted gross income, or AGI.

This guide covers all four in plain English, with worked examples. The “For Financial Wizards” boxes point to the IRS source for each rule, so experienced readers can go straight to the primary sources (IRS Topic No. 506 and Publications 526, 561 and 1771). We stick to IRS rules only. No speculation, no third-party interpretations, and no BS. Start with the charitable contribution tax deduction calculator right here:

Should you itemize or take the standard deduction in 2026?

You itemize when your itemized deductions add up to more than the standard deduction for your filing status. That is the whole test. Charitable gifts are only one line on Schedule A, so the question is really about your whole picture: state and local taxes, mortgage interest, big medical bills and donations, all added together. The charitable contribution tax deduction calculator above works as an itemized deduction calculator too. It runs both routes with your numbers and tells you which one wins.

Here are the 2026 standard deduction amounts from IRS Revenue Procedure 2025-32. If you are 65 or older, or blind, you get an extra amount on top. Married people get $1,650 per qualifying spouse. Single filers and heads of household get $2,050.

Filing status	2026 standard deduction	Extra if 65 or older (per person)
Single	$16,100	$2,050
Married filing jointly	$32,200	$1,650 per spouse
Married filing separately	$16,100	$1,650
Head of household	$24,150	$2,050

People 65 and older also get a separate deduction of up to $6,000 per person for 2025 through 2028, whether they itemize or not. Publication 505 for 2026 says it shrinks once modified AGI passes $75,000 ($150,000 on a joint return). It is not a charitable deduction, but it does lower taxable income, and the charitable contribution tax deduction calculator includes it when you tell it your age.

How the calculator decides

The charitable contribution tax deduction calculator figures your federal tax two ways and shows the lower one. On the standard deduction route, it takes the amount from the table, adds the extra for age 65, and adds the new deduction for cash gifts (up to $1,000, or $2,000 filing jointly). On the itemized route, it adds up your state and local taxes (after the 2026 cap), mortgage interest, other deductions and your gifts. Then it applies two 2026 rules that trip people up.

• The first is the 0.5% floor. When you itemize, the first 0.5% of your AGI in gifts does not count. On $100,000 of income, that is the first $500. Publication 505 puts it this way: “Any amount that falls under the 0.5% floor can’t be deducted in 2026.”
• The second is the top-bracket trim. If part of your income lands in the 37% bracket, your itemized deductions are reduced by 5.4% of the smaller of your itemized deductions or the income above the bracket line. In plain terms, each dollar of deductions at the top saves about 35 cents of tax. Without the trim it would save 37.

Both rules come from Publication 505. The calculator also treats all income as ordinary income and leaves out credits and state tax. Our guide to how donations affect state taxes covers the state side.

What usually tips people into itemizing

Three things do most of the work. Mortgage interest, especially in the first years of a loan. State and local taxes, which you can now deduct up to $40,400 in 2026 ($20,200 if married filing separately). That cap shrinks once modified AGI passes $505,000, but never below $10,000. And a big giving year, like a house cleanout, a car donation or a gift of stock. Medical bills count too, but only the part above 7.5% of your AGI.

The new cash deduction changes this math, and in the opposite direction from what you’d expect. Say a married couple has $150,000 of income, $12,000 in state and local taxes, $14,000 in mortgage interest and $8,000 in cash gifts. The 0.5% floor takes $750 off the gifts, so their itemized total is $12,000 + $14,000 + $7,250 = $33,250. That beats the $32,200 standard deduction. But on the standard route they also get the $2,000 cash-gift deduction, for $34,200 total. The standard deduction wins by $950. In 2026, the bar for itemizing is a little higher than the table suggests whenever you give cash.

Bunching: giving two years in one

Bunching means giving two years’ worth of donations in one year, then giving little or nothing the next. Take the couple above. If they give $16,000 this year and nothing next year, this year’s itemized total is $12,000 + $14,000 + $15,250 = $41,250. That beats $34,200 by $7,050. Next year they take the plain $32,200 standard deduction. Over two years they deduct $73,450. Giving the same $8,000 each year on the standard route, they would deduct $68,400. At their 22% rate, the extra $5,050 in deductions saves about $1,111. The floor also hits only once in the two years, a small bonus. The full 2026 rule changes are in our charitable deductions 2026 guide.

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What is a charitable donation?

A charitable donation is a gift of money or property to a qualified organization, where you get nothing back. If you do get something back, like a dinner or a tote bag, you can only deduct the part of your gift above the fair market value of what you received. The IRS has to recognize the organization for the gift to count. That covers public charities, churches, many schools and governments. You can check any group in the IRS Tax Exempt Organization Search.

Four kinds of gifts come up most often. Each one has its own paperwork and valuation rules.

1) Cash donations

Cash means money in any form: checks, debit and credit cards, online payments and bank transfers. To deduct a cash gift, you need a bank record (a canceled check or a statement) or a written acknowledgment from the charity showing its name, the date and the amount. For any single gift of $250 or more, you need a written acknowledgment from the charity that says whether you got any goods or services in return. You need it in hand before you file.

Example (cash): you give $500 on a charity’s website. Their automatic email lists the charity’s name, the date, the amount and a line saying no goods or services were provided. Keep that email. It satisfies the written acknowledgment rule for a $250-plus gift.

2) Noncash item (property) donations

Property means clothing, furniture, appliances, books, tools and other physical goods. For clothing and household items, the IRS requires “good used condition or better.” Your deduction is the fair market value, which is what a willing buyer would pay a willing seller today. In practice, that is the thrift-store price. Our Goodwill donation value guide and Salvation Army value guide list typical amounts. If your noncash gifts total more than $500 for the year, you attach Form 8283, Section A. For a single item or group of similar items worth more than $5,000, you usually need a qualified appraisal and Form 8283, Section B, signed by the appraiser and the charity.

Example (noncash items): you donate a sofa, two end tables and a set of bookshelves to a qualifying thrift store and get a receipt describing them. You price each one against similar used pieces and write down how you got there. The total comes to $620, so you attach Form 8283 Section A because your noncash gifts top $500 for the year.

3) Stock and other securities donations

Giving stock, ETFs or mutual fund shares you have held more than a year is one of the better moves in the tax code. You deduct the fair market value on the day of the gift, and you skip the capital gains tax on the growth. For publicly traded shares, fair market value is usually the average of the high and low price on the gift date. Have your broker send the shares straight to the charity so the gift date is clear. Publicly traded stock goes on Form 8283 Section A at any amount, so no appraisal is needed even above $5,000, according to the Form 8283 instructions.

Example (stock): you bought 50 shares for $20 each years ago. They are worth $60 each today. Give the shares directly to a public charity and you deduct $3,000 (50 x $60) and never pay capital gains tax on the $2,000 of growth.

4) Charitable mileage and out-of-pocket volunteer expenses

When you drive your own car to volunteer for a qualified organization, you can deduct 14 cents a mile plus parking and tolls. That rate is set by law and does not change with gas prices. Unreimbursed costs you pay while volunteering, like supplies, can also count if you keep receipts. The value of your time never counts.

Example (mileage): you drive 12 miles round trip each week to deliver meals for a nonprofit. After 40 trips, that is 480 miles x $0.14 = $67.20, plus any parking and tolls you paid along the way.

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How much will charitable donations reduce taxes?

Donations lower your taxable income. Your tax bill then drops by a fraction of that amount, roughly your top tax rate times the amount you can deduct. In the 22% bracket, a $1,000 deduction saves about $220. If you take the standard deduction, cash gifts still count in 2026, up to $1,000 or $2,000 filing jointly. Anything above that, and every noncash gift, requires itemizing.

Two things explain why two people giving the same amount can see very different results. First, whether they itemize. A $5,000 gift of furniture does nothing for someone on the standard deduction. Second, their tax bracket and AGI limits. A deduction is worth more at a higher rate, but charitable deductions are also capped as a percentage of AGI, and the cap depends on the type of gift and the type of charity.

Illustration (step by step):

• Taylor gives $2,500 to qualified charities during the year.
• Taylor adds up all itemized deductions: mortgage interest, state and local taxes within the cap, medical bills above the threshold, and the gifts (minus the 0.5% floor).
• If the total beats the standard deduction for Taylor’s filing status, Taylor itemizes and deducts the gifts (subject to AGI limits).
• If not, Taylor takes the standard deduction. In 2026, up to $1,000 of the $2,500 still counts as a cash gift. The rest does not lower Taylor’s taxable income this year.

Is it worth it to claim charitable donations on taxes?

For cash gifts up to the new limit, always. The $1,000 or $2,000 deduction costs you nothing but a receipt. Beyond that, it is worth it when you itemize. Donations are the one itemized deduction you fully control: you pick the timing and the amount. If your itemized total sits just under the standard deduction, bunching two years of gifts into one year can push you over, as the example above shows.

Example (bunching): Amber usually gives $2,000 a year. This year she gives $4,000 and next year nothing. The extra $2,000 pushes her itemized deductions past the standard deduction, so she itemizes this year and takes the standard deduction next year.

What if my donation is worth over $5,000?

For property worth more than $5,000 (one item or a group of similar items), you usually need a qualified appraisal from a qualified appraiser. You also fill out Form 8283, Section B, which the appraiser and the charity both sign. Without the appraisal, the IRS can throw out the whole deduction, even though the charity got your gift. Two exceptions: publicly traded stock never needs an appraisal, and a donated car whose deduction is limited to the sale price does not either. Our car donation tax deduction guide covers that one.

Example (artwork): you donate a painting to a museum. Your appraiser sets the fair market value at $9,800 and gives you a qualified appraisal. You and the museum complete Form 8283 Section B, and you keep the appraisal with your records.

How much of a tax break do I get for charitable donations?

The type of gift and the type of organization set your AGI limit for the year:

• Cash gifts to most public charities: up to 60% of AGI.
• Property gifts (capital gain property like stock) to public charities: usually 30% of AGI.
• Private foundations: lower limits, often 20%.

If you give more than the limit, you carry the extra forward and deduct it over the next five years, still subject to each year’s limits.

Example (limits and carryover): Jordan’s AGI is $200,000, so Jordan’s cash limit is 60% of that, or $120,000. Jordan gives $140,000 in cash to public charities. Jordan deducts $120,000 this year and carries the remaining $20,000 forward.

Why don’t my charitable donations reduce my taxes?

Five common reasons:

1. You took the standard deduction and the gift wasn’t cash. In 2026, standard-deduction filers can deduct up to $1,000 of cash gifts, or $2,000 filing jointly. Clothing, household goods and stock still need Schedule A.
2. The organization wasn’t qualified. Gifts to individuals, political groups and most crowdfunding campaigns are not deductible.
3. No written acknowledgment for a $250-plus gift. Without it, the IRS can deny the deduction.
4. AGI limits or property rules applied. Big givers and donors of appreciated property can hit a cap that pushes part of the deduction into a later year.
5. The gift landed in a different tax year than you expected. A credit card charge counts in the year you make the charge, even if you pay the bill in January. Publication 526 says so in as many words.

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What happened to the $600 charitable deduction?

It came back for 2026, and it’s larger.

For 2020 and 2021 there was a temporary deduction of up to $300 per person, or $600 for joint filers, that you could take without itemizing. It expired. For tax years 2022 through 2025, you had to itemize to deduct any charitable giving at all.

Starting with tax year 2026, you don’t. The IRS says it plainly in Topic No. 506: “Beginning with tax year 2026, if you do not itemize, you may deduct up to $1,000 ($2,000 if filing jointly) of your cash contributions to certain qualified organizations.”

The catch is that it only covers cash: money, check or card, given to a qualified organization during the year. The bags of clothes you dropped at Goodwill don’t count toward it, and neither does donated stock. Gifts to donor-advised funds and supporting organizations are left out too, and so are carryovers from earlier years. Those details are on the IRS One Big Beautiful Bill provisions page.

If you itemize, there’s a new limit going the other way. Publication 505 for 2026 says you can only deduct charitable contributions that are more than 0.5% of your adjusted gross income. On an AGI of $120,000, the first $600 of giving no longer counts.

So if you take the standard deduction, start keeping receipts for cash gifts again. If you itemize, subtract the floor before you decide whether a gift was worth claiming.

Why did charitable deductions go away?

They didn’t. The regular itemized deduction for charitable gifts never left. Only the temporary deduction for people who don’t itemize ended after 2021, and a bigger version of it is back for 2026. Charitable deductions continue on Schedule A with the usual record and limit rules.

Can you deduct $600 charitable contributions?

Yes, two ways. If you itemize and meet the rules (qualified charity, proper records, within AGI limits), $600 is deductible like any other gift. If you don’t itemize, a $600 cash gift fits inside the new $1,000 or $2,000 limit for 2026. The old $600 rule itself is gone; the new one is bigger.

What happened to the $300 charity deduction?

Same story. It was part of the same temporary measure: $300 for single filers and $600 for joint filers, on certain cash gifts by people who didn’t itemize, for 2020 and 2021. That version expired. A larger one took its place in 2026, worth up to $1,000, or $2,000 for joint filers, on cash gifts.

Are charitable donations no longer tax deductible?

They are still deductible for itemizers who give to qualified organizations and keep proper records. Since 2026, cash gifts are deductible for non-itemizers too, up to $1,000 or $2,000 filing jointly. The rules for acknowledgments still matter, especially for gifts of $250 or more and for gifts where you got something in return.

Why isn’t my donation tax deductible?

The usual culprits: the group wasn’t a qualified organization, you never got a written acknowledgment for a $250-plus gift, or you deducted the full price of something that came with a benefit. Gala tickets are the classic case. If the ticket cost $600 and the dinner was worth $200, only $400 is a gift.

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Can you write off 100% of a donation?

Under current rules, no. The temporary 100% of AGI limit for certain cash gifts in 2020 and 2021 has expired. Today the limits look like this:

• Cash gifts to public charities: generally limited to 60% of AGI.
• Gifts of capital gain property to public charities: often limited to 30% of AGI.
• Lower limits can apply for certain organizations, such as private foundations.

Example (large gift): Aria’s AGI is $150,000. Aria gives $120,000 in cash to a public charity. Aria can deduct up to $90,000 this year (60% of AGI) and carry the other $30,000 forward for up to five years, subject to each year’s limits.

Are charitable donations 100% tax deductible?

Not in the sense of AGI limits; there are percentage ceilings. But a specific gift is fully deductible as long as your total giving for the year stays under the cap that applies to it, and, if you itemize, it clears the 0.5% floor.

Which donations are eligible for 100% deduction?

The old temporary rule allowed up to 100% of AGI for certain cash gifts, and it is gone. Today there is no general 100% of AGI rule for ordinary taxpayers. A few narrow cases exist in the tax code, but they involve special entities and advanced planning, well outside the everyday donor’s world.

Is it worth claiming Goodwill donations on taxes?

If you itemize, yes, as long as the items are in good used condition or better and you use a realistic fair market value. Keep an itemized list and the receipt. Photograph anything of real value and note brands, model numbers and condition. Our guide to Goodwill donation receipts walks through what the receipt needs to show.

Example (household goods): you donate five bags of clothing, two small appliances and a box of children’s books. You price them against thrift-store listings and keep an itemized list. The total comes to $480. You keep the receipt and your valuation notes in case anyone asks.

What is the maximum donation write-off without a receipt?

For cash gifts under $250, a bank record (canceled check, card statement) or a written note from the charity is enough. At $250 or more, you must have a written acknowledgment from the charity. For noncash gifts, keep the charity’s receipt describing the property, and attach Form 8283 once your noncash total for the year passes $500. The IRS rules for noncash donations go deeper on each level.

What items are 100% tax deductible?

“100%” gets used loosely. Cash gifts to qualified charities are deductible, subject to AGI limits. Property gifts are generally deductible at fair market value, with special rules for certain property types and organizations. In every case, you subtract the value of anything you got in return.

How much to donate to get a tax write-off?

There is no minimum. Any cash gift to a qualified charity counts in 2026, up to the $1,000 or $2,000 non-itemizer limit, as long as you have the record. Above that, the question is whether your total itemized deductions beat the standard deduction. If you are close, bunching gifts or donating appreciated stock (which you deduct at full market value) can push you over.

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Determining fair market value (FMV) of property

When you donate property, your deduction is based on fair market value: the price the item would sell for between a willing buyer and a willing seller, with neither one forced to act and both knowing the facts. It is not what you paid, and it is not what a new one costs today. Our fair market value explainer goes through the IRS definition line by line.

Key FMV principles:

• Comparable sales carry the most weight: what similar items in the same condition actually sell for.
• Condition matters. Tears, stains and missing parts all lower the value, especially for books, furniture and clothing.
• Replacement cost only helps when it has a reasonable relationship to what buyers pay in the used market.
• Appraisals are required when you cross the thresholds, generally $5,000 for a single item or group of similar items.

Examples by category:

• Clothing and household goods: use thrift store or online resale prices. Items must be in good used condition or better. See our clothing donation value guide for typical ranges.
• Vehicles: if the charity sells the car, your deduction is generally the sale price, unless a specific exception applies.
• Art and collectibles: use a qualified appraiser who knows the field. Keep photographs and paperwork.
• Books and media: edition, scarcity and condition drive value. A first edition in good shape can be worth far more than a later, worn printing.

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Substantiation and disclosure requirements (what records to keep)

The IRS puts the burden on you, the donor, to keep records and get written acknowledgments. Here is the short version by dollar level:

• Cash gifts under $250: keep a bank record or a written note from the charity showing its name, the date and the amount.
• Cash gifts of $250 or more: get a written acknowledgment from the charity that shows the amount and date, says whether you got goods or services, and, if you did, gives the charity’s good-faith estimate of their value.
• Noncash gifts of $250 or more: get a written acknowledgment that describes the property (the charity does not value it; you do).
• Noncash gifts over $500 for the year: attach Form 8283, Section A.
• Noncash gifts over $5,000: get a qualified appraisal and attach Form 8283, Section B, signed by the appraiser and the charity.

If you got goods or services for your gift (a quid pro quo contribution), you subtract their fair market value from your deduction. Charities have to tell you the deductible portion when your payment tops $75. The audit-safe donation checklist shows how to keep all of this organized.

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Charitable contribution tax deduction calculator: the math by hand

There is no official IRS calculator. The charitable contribution tax deduction calculator at the top of this page does the work for you, but here is the same math as a checklist, so you can see what it is doing and check it yourself:

1. Add up what you gave. List your cash gifts (checks, cards, online) and your noncash items (clothes, furniture and so on). If you got something in return, like a gala dinner or a gift, note its value. You can only deduct the part above what you received.
2. Put a fair price on the items. Use what each item would sell for today, thrift-store style. What you paid for it new does not matter. If your noncash gifts top $500 for the year, you add Form 8283 to your return. If a single item or group of similar items tops $5,000, you usually need a qualified appraisal.
3. Check the yearly caps. Cash gifts to most public charities: up to 60% of your AGI. Most property gifts: up to 30%. Gifts to private foundations and a few special cases: lower.
4. Gave more than the cap? You carry the extra forward for up to five years and use it later, still subject to each year’s limits.
5. Decide whether you itemize. If your itemized deductions (mortgage interest, state and local taxes within the cap, medical where allowed, plus donations) beat the standard deduction, you itemize. If not, you take the standard deduction, and only your cash gifts count, up to $1,000 or $2,000 filing jointly.
6. Figure your allowable deduction. Start with your total giving, subtract the value of anything you received, apply the caps, and, if you itemize, subtract the 0.5% floor. That is your deduction for the year.
7. Estimate the tax savings. Multiply the deduction by your top tax rate. A $5,000 deduction in the 22% bracket saves about $1,100 in federal tax.

Example A: you donate cash to a qualified charity (cash only)

• AGI: $120,000
• Cash gifts to public charities: $8,000
• AGI limit for cash: 60% of $120,000 = $72,000, so the $8,000 is well within the limit.
• 0.5% floor for 2026: 0.5% of $120,000 = $600. That first $600 isn’t deductible.
• If you itemize, your allowable deduction is $8,000 – $600 = $7,400.
• At $120,000 of income, your top rate is 22% for any filing status, so the estimated federal tax savings is about $1,628.

Example B: you donate cash, some property and gala tickets to a qualified charity

Suppose you gave cash, some household goods and bought tickets to a charity gala. What does the deduction look like?

• AGI: $180,000, single filer
• Cash gifts to public charities: $10,000
• Property gifts (household goods in good used condition): fair market value $2,400
• Gala tickets: $600 paid, with a $200 fair market value for the meal and entertainment
• AGI limit check: cash limit is 60% of $180,000 = $108,000, so $10,000 is within it. Property limit is 30% of $180,000 = $54,000, so $2,400 is within it.
• Quid pro quo adjustment: you deduct only the excess over what you received, $600 – $200 = $400.
• Subtotal: $10,000 (cash) + $2,400 (property) + $400 (gala excess) = $12,800.
• 0.5% floor for 2026: 0.5% of $180,000 = $900. That first $900 isn’t deductible. Allowable deduction: $12,800 – $900 = $11,900.
• At a 24% top rate, the estimated federal tax savings is about $2,856 (if you itemize).

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How much can you deduct from your total income for charitable donations?

Here is the simple version of the annual limits, based on your AGI (your income after certain adjustments, the number on your return before deductions):

• Cash gifts to most public charities: up to 60% of your AGI.
• Most property gifts (like appreciated stock) to public charities: up to 30% of your AGI.
• Gifts to certain private foundations and similar organizations: lower, often 20%.

What if you give more than the limit?

You don’t lose the extra. You carry it forward for up to five years. Each year, you claim your new donations first, then use any leftover carryover, as long as you stay under that year’s percentage limits.

Carryover example

This year: Priya’s AGI is $100,000. She gives $80,000 in cash to public charities. Her cash limit is 60% of $100,000 = $60,000, so she deducts $60,000 now and carries $20,000 forward.

Next year: Priya’s AGI is $150,000, so her cash limit is $90,000. If she makes no new donations, she deducts the full $20,000 carryover because it fits under the limit. If she does give again, the new gifts go first and the carryover fills in behind them.

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Common mistakes that reduce deduction value (and how to avoid them)

• No receipt for gifts of $250 or more. You need a timely written acknowledgment (a receipt, thank-you letter or email that shows the amount and date and says whether you got anything back). Without it, the IRS can deny the deduction. Ask for it and keep it.
• Overvaluing used items. Fair market value is what similar used items actually sell for. Your original price and the cost of a new one are both beside the point. Check thrift and resale prices and keep brief notes or screenshots.
• Forgetting to subtract benefits you received. If your gift came with a dinner, concert access or merchandise, you deduct only the amount above that item’s fair market value.
• Giving to groups that aren’t eligible. Check the charity in the IRS database before you give. Gifts to individuals and political organizations are never deductible.
• Skipping required forms or appraisals. Use Form 8283 when your noncash gifts pass $500, and get a qualified appraisal when an item or group of similar items passes $5,000.
• Forgetting the 0.5% floor. If you itemize in 2026, the first 0.5% of your AGI in gifts doesn’t count. Subtract it before you estimate your savings.
• Losing track of carryovers. If you give more than this year’s limit, you can carry the extra forward for up to five years. Write it down so you don’t leave deductions on the table.

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Final takeaways (for planners and doers)

• Decide whether you’ll itemize. If you don’t, your cash gifts still cut your taxable income in 2026, up to $1,000 or $2,000 filing jointly. Noncash gifts still need Schedule A.
• If you’re near the standard deduction line, consider bunching gifts so you itemize at least every other year. Remember that the cash-gift deduction raises the bar a little.
• For investments that have grown, consider giving the stock itself. You skip capital gains and deduct the full market value.
• Keep timely acknowledgments and clear valuation notes, especially for noncash gifts. A donation tracker makes this painless.
• Watch the AGI limits, the 0.5% floor and your carryovers. Run the charitable contribution tax deduction calculator again whenever your giving plans change.
• When in doubt, go to the IRS publications and forms listed below.

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Common questions about the charitable deduction calculator

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LEARN MORE with key IRS resources:

• Publication 526, Charitable Contributions (deductibility, AGI limits, carryovers and special rules)
• Publication 561, Determining the Value of Donated Property (fair market value and appraisal requirements)
• Publication 1771, Charitable Contribution Substantiation and Disclosure (acknowledgments, quid pro quo and recordkeeping)
• Publication 505 (2026), Tax Withholding and Estimated Tax (the 0.5% floor, the SALT cap and the top-bracket trim)
• Revenue Procedure 2025-32 (2026 standard deduction, age 65 add-on and tax brackets)
• IRS Topic No. 506, Charitable Contributions
• Form 8283, Noncash Charitable Contributions (and instructions)