Standard vs Itemized Deduction Calculator United States

This standard vs itemized deduction calculator compares both, including the capped SALT amount, and shows which one lowers your taxable income more.

Filing status

State & local taxes paid (SALT) US$

Home mortgage interest US$

Charitable contributions US$

Other itemized deductions US$

Adjusted gross income US$

Age-65-or-blind boxes checked (you and spouse, 0 to 4)

Deduction to claim —

Standard deduction —

Itemized total —

SALT deductible (after cap) —

SALT lost to cap —

Extra benefit from itemizing —

Charitable deduction (after the AGI floor) —

Charitable deduction floor (0.5% of AGI) —

Additional standard deduction for age or blindness —

SALT cap after the high-income phasedown —

We always strive to use the latest data for every variable so our results and reports are as accurate as possible. Even so, errors are possible — you should not rely on this tool or its report alone, and we accept no liability for any decision made based on it.

What it does

The Standard vs Itemized Deduction Calculator compares the federal standard deduction for your filing status against your total itemized deductions, with the state and local tax (SALT) portion capped, and tells you which is larger.

Data sources & parameters

The figures below drive this calculator. We keep them aligned with the latest official guidance, and each result recalculates automatically whenever a value changes.

Parameter	Value	Source	Last updated
Standard deduction, single	16,100	irs.gov	Effective 2026-01-01
Standard deduction, married joint	32,200	irs.gov	Effective 2026-01-01
Standard deduction, married separate	16,100	irs.gov	Effective 2026-01-01
Standard deduction, head of household	24,150	irs.gov	Effective 2026-01-01
SALT deduction cap	40,400	law.cornell.edu	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
Itemized charitable deduction floor (share of AGI)	0.005	gtlaw.com	Effective 2026-01-01
SALT cap floor	10,000	law.cornell.edu	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
SALT cap phasedown rate	0.3	law.cornell.edu	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
SALT cap phasedown MAGI threshold	505,000	law.cornell.edu	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
SALT cap share for a married separate return	0.5	law.cornell.edu, irs.gov	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
Additional standard deduction for age or blindness	1,650	irs.gov	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.
Additional standard deduction for age or blindness, unmarried and not a surviving spouse	2,050	irs.gov	Effective 2026-01-01Fix 2026-10-24: the row went live with country_code AU, so Resolver never saw it and the key fell back to the tool.json default. Value unchanged.

The formula

Itemized = min(SALT, cap) + mortgage interest + charitable + other; you claim max(standard deduction, itemized)

How it works

It caps the SALT you enter at the statutory limit, adds mortgage interest, charitable gifts, and other itemized deductions, then compares that total with your standard deduction.

Where it is used

Deciding whether to itemize or take the standard deduction
Seeing how the SALT cap limits your itemized total
Estimating the extra deduction from itemizing

Worked example

A single filer with $8,000.00 mortgage interest, $12,000.00 SALT, and $3,000.00 in gifts has an itemized total of … versus a … standard deduction, so itemizing adds ….

What the standard vs itemized calculator does

Every filer can subtract either a fixed standard deduction set by filing status or the total of their eligible itemized deductions, and should claim whichever is larger. Enter your filing status, the state and local taxes you paid (income or sales tax plus property tax), your mortgage interest, your charitable contributions and any other itemized deductions. The calculator compares the two and shows the gap.

Since the standard deduction was raised, most households find it beats their itemized total. Homeowners with a mortgage, people in high-tax states and generous donors are the ones most likely to itemize past it.

How the comparison works

It caps your state and local taxes (SALT) at the statutory limit.
It adds home mortgage interest, charitable contributions, and any other itemized deductions.
That sum is your itemized total.
It compares the itemized total with the standard deduction for your filing status.
It reports the larger figure as the deduction to claim, plus the extra benefit from itemizing.

The extra benefit is the additional deduction you gain by itemizing. If your itemized total falls short, it is zero and you should take the standard deduction.

The SALT cap

State and local taxes are among the largest itemized deductions for many households, but only the amount up to the cap counts. In high-tax states, property and income taxes alone can far exceed the cap, so any further growth in the itemized total has to come from other deductions. The calculator shows the SALT you can deduct and the amount lost to the cap.

Why filing status matters

Single filers and married people filing separately have the lowest standard deduction, heads of household are in the middle, and married couples filing jointly have the highest, so a joint couple needs a much larger itemized total before itemizing pays off. For married filing separately, if one spouse itemizes the other generally must too, even if the standard deduction would have been better for them, and the SALT cap is lower.

Reading your result

The output leads with the deduction to claim, then shows the standard deduction, the itemized total, the SALT you can deduct, the SALT lost to the cap, and the extra benefit from itemizing. The bar chart puts the two totals side by side.

If they are close, an extra charitable gift late in the year, or bunching two years of donations into one, can tip the balance toward itemizing. Adjust the inputs to test it. Your year-end mortgage statement reports your interest, and only substantiated charitable gifts are deductible, so keep records of cash and non-cash donations.

Deduction amounts and the SALT cap can change each year, so rerun the comparison every tax season and when your mortgage, giving or state taxes change.

This is general information only and not financial advice.

About This Standard vs Itemized Deduction Calculator

Use this standard vs itemized deduction calculator to get an instant, accurate estimate. The figures follow official IRS guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.

Tax year 2026

Frequently asked questions

Should I take the standard deduction or itemize?

You should claim whichever is larger. If your itemized deductions, including the capped state and local tax amount, exceed your standard deduction, itemizing lowers your taxable income more.

What counts as an itemized deduction?

Common itemized deductions include state and local taxes (capped), home mortgage interest, charitable contributions, and certain medical expenses above a threshold. This tool adds the first three plus an 'other' field.

How does the SALT cap affect my itemized total?

State and local taxes are only deductible up to a statutory cap. If you paid more than the cap, only the capped amount counts toward your itemized total, and the rest is lost.

Does everyone qualify for the standard deduction?

Most filers do, and its amount depends on filing status. A minority of taxpayers, such as some married people filing separately whose spouse itemizes, face special rules, so confirm your situation.

Are the deduction figures current?

The standard deductions and the SALT cap come from official sources and are updated when they change, so your comparison reflects current figures.

Is my data private?

Yes. The calculation runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.

About the author

Written and reviewed by

Taha Kheirandish

Economics student and independent researcher

Taha Kheirandish reads tax codes the way other people read maps — to find out where a system actually leads, not where it claims to go.

He is an economics student, and his work here is comparative by design. A pension deferral bonus in Quebec, a commuting allowance in Germany, a rent-increase ceiling in the Netherlands: each is a decision a government made about how money should move, and each reads differently once you set it beside eight others. He builds and checks these calculators across nine markets from primary sources — the regulation rather than a summary of it, the ministry’s own circular rather than a news item quoting it.

That is the editorial standard of the site as well as his habit. Every rate, threshold and bracket here carries the document it was read from and the date it takes effect, and gets re-checked when the law moves rather than when someone happens to notice.

He is a researcher, not a licensed adviser, and nothing on this site is personal financial advice. It is arithmetic done carefully with its sources shown — so that you can check it, and take it to someone who is.

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