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TaxdeductionsUnited States only

Standard vs Itemized Deduction Calculator

Standard against itemised deduction. The SALT cap and the medical expense floor are what usually keep itemised totals below the standard deduction, even for people with substantial deductible costs.

Also called: itemize or standard deduction, schedule a calculator.

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Which to take
Itemise

Itemise: itemising gives $24,500.00 against a standard deduction of 15,000. The difference is worth $2,280.00 at your marginal rate. 8000 of state and local tax is lost to the cap and cannot be deducted at all.

Total itemised deductions
$24,500.00
Deduction you would take
$24,500.00
Tax difference
$2,280.00
SALT actually deductible
$10,000.00
SALT lost to the cap
$8,000.00
Medical above the floor
$0.00
On the SALT cap
8000 of state and local tax is lost to the cap and cannot be deducted at all.

Computed from the published rates for the tax year you selected, which is not necessarily the current year. A calculation, not tax advice, and it does not know anything about your circumstances beyond the figures entered.

Method and background

This is what the calculation gives for the numbers you entered. It is an estimate, not advice, and it knows nothing about your situation beyond those numbers. Rules for United States change on a published schedule; the effective date is shown on every rule-based tool.

How this is calculated

Itemised deductions are summed and compared to the standard deduction, and you take the larger. Two limits do most of the work. State and local taxes are capped, so high-tax-state filers lose the excess entirely. Medical expenses are deductible only above a percentage of adjusted gross income, so a moderate medical year contributes nothing. Since the standard deduction was roughly doubled, the great majority of filers take it, and itemising is worth checking rather than assuming.

you take whichever is larger, and most filers take the standard deduction
D
Deduction

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

a filer in a high tax state

Standard deduction
$15,000.00
Mortgage interest
$11,000.00
State and local taxes paid
$18,000.00
SALT deduction cap
$10,000.00
Charitable contributions
$3,500.00
Medical expenses
$4,000.00
Adjusted gross income
$145,000.00
Marginal rate
24%

Which to takeItemise

Medical of 4,000 is below the 10,875 floor, so it contributes nothing

Open this example

no deductions means the standard wins

Standard deduction
$15,000.00
Mortgage interest
$0.00
State and local taxes paid
$0.00
SALT deduction cap
$10,000.00
Charitable contributions
$0.00
Medical expenses
$0.00
Adjusted gross income
$145,000.00
Marginal rate
24%

Which to takeTake the standard deduction

boundary

Open this example

Method and limits

What it assumes

  • A single filer position with the deductions entered.

What it deliberately does not model

  • The SALT cap and medical floor are set by statute and have changed.
  • Charitable deduction limits based on AGI are not modelled.
  • This is a comparison, not tax advice or a return.

Formula version 1.0.0 · definition 1.0.0 · United States · Report a problem with this calculator

Frequently asked questions

Why does itemising rarely win now?
Because the standard deduction was roughly doubled while the SALT deduction was capped. Together those changes moved most filers to the standard deduction.
Are all my medical expenses deductible?
Only the portion above a percentage of your adjusted gross income. Below that floor they contribute nothing to an itemised total.