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Standard vs Itemized Deduction Calculator

See whether to itemize or take the standard deduction, comparing SALT under 2026 cap rules, mortgage interest, charity, and medical above 7.5% of AGI.

Standard vs Itemized Deduction (2026 tax year)

AGI from your return (after above-the-line adjustments).

Standard deduction: $16,100.

Itemized deductions (Schedule A)

Property + income or sales tax. The 2026 cap phases down for high-income filers.

Home mortgage interest from Form 1098.

Cash and non-cash donations to qualified charities.

Total unreimbursed. Only the part above 7.5% of AGI counts.

Recommended

Itemize your deductions

Itemizing deducts $13,900 more than the standard deduction and cuts your federal tax by $3,058.

Deduction claimed

$30,000

Federal tax saved

$3,058

Standard deduction

$16,100

Federal tax $13,170

Itemized total

Best

$30,000

Federal tax $10,112

Itemized breakdown
State + local taxes (SALT)$15,000
Mortgage interest$12,000
Charitable gifts$3,000
Deductible medical$0

Of $5,000 entered, only the part above the $7,500 floor (7.5% of AGI) counts.

Itemized total$30,000

Taxable income (standard)

$83,900

Taxable income (itemized)

$70,000

Marginal rate

22%

Federal income tax only, 2026 tax year. Uses 2026 standard deductions, brackets, and SALT cap rules. Medical floor comes from IRC Section 213(a). This does not model AMT, state itemized rules, or itemized deduction limits outside the SALT cap phaseout. Estimate only, not tax advice.

Frequently Asked Questions about the Standard vs Itemized Deduction Calculator

How do I decide between the standard and itemized deduction?
You claim whichever is larger. The calculator sums your itemized deductions and compares them to the standard deduction for your filing status, then applies the 2026 federal tax brackets to both so you can see the actual tax difference. If your itemized total is bigger, itemizing lowers your taxable income and your tax; if not, the standard deduction wins.
What is the SALT cap and how does it apply here?
State and local taxes (property tax plus state income or sales tax) are deductible only up to the federal SALT cap. For 2026 the cap is $40,400, or $20,200 if you are married filing separately, before the high-income phaseout. The calculator reduces that cap by 30% of AGI above $505,000 ($252,500 if married filing separately), but never below $10,000 ($5,000 if married filing separately). Anything above the cap does not increase your deduction.
How much of my medical expenses can I deduct?
Only the portion of unreimbursed medical expenses above 7.5% of your adjusted gross income counts. For example, at $100,000 of AGI the first $7,500 is not deductible, so $12,000 of medical bills produces a $4,500 deduction. The calculator subtracts the 7.5% floor for you before adding the remainder to your itemized total.
Which standard deduction amounts does this calculator use?
It uses the 2026 tax-year amounts: $16,100 for single, $32,200 for married filing jointly, $16,100 for married filing separately, and $24,150 for head of household. Choose your filing status and the matching standard deduction loads automatically for the comparison.
Why do so many filers end up taking the standard deduction?
The standard deduction is large enough that many households still do not have enough deductible expenses to beat it, even with the higher temporary SALT cap. Itemizing usually pays off only when you carry a sizable mortgage, have high state and local taxes within the cap, give large charitable gifts, or have high medical bills in a single year.
Is this a substitute for tax advice?
No. This tool gives an estimate for federal income tax in the 2026 tax year and does not model the AMT, state itemized rules, or itemized deduction limits outside the SALT cap phaseout. It is not financial or tax advice, so confirm your figures with the IRS instructions or a tax professional before you file.

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