Guides · Standard vs itemize

Itemize vs standard deduction — when it pays off

How the choice works

Every US taxpayer gets to choose each year: take the standard deduction (a flat amount), or itemize (add up specific deductible expenses). You choose the larger of the two. Tax software and Schedule A handle the comparison.

For 2026 (per Rev. Proc. 2025-32):

The break-even point is exactly the standard deduction. If your itemized deductions exceed it, you save tax by itemizing. If they don't, the standard deduction is the better choice.

Note: most US calculators (including the TaxToNet calculator) use the standard deduction. To estimate your itemized deduction, run the calculator with no other inputs and treat the standard-deduction result as the baseline; an itemizer with $30,000 of Schedule A items effectively has a $30,000 deduction instead of $16,100.

What itemized deductions are

Six categories of deductible expense qualify for Schedule A:

1. State and local taxes (income, sales, property) — capped at $10,000 since 2018.
2. Home mortgage interest — on up to $750,000 of acquisition debt (post-2017 mortgages; $1M cap on pre-2018 mortgages).
3. Charitable contributions — cash to qualified charities, up to 60% of AGI; appreciated property, up to 30% of AGI.
4. Medical and dental expenses — only the portion exceeding 7.5% of AGI is deductible.
5. Casualty and theft losses — in federally declared disaster areas only (post-TCJA).
6. Other itemized deductions — a small residual list: certain investment interest, gambling losses up to winnings, federal estate tax on IRD income, etc.

Three things that used to be deductible but aren't (post-TCJA, 2018-2025):

• Miscellaneous itemized deductions subject to the 2% AGI floor (investment fees, tax prep, unreimbursed employee expenses).
• Personal casualty and theft losses outside disaster areas.
• Moving expenses (except active-duty military).

Some of these restrictions expired at the end of 2025; the OBBBA extended some, modified others. The TaxToNet calculator models the standard deduction and does not attempt to reproduce Schedule A behavior.

State and local tax (SALT) cap

The single biggest itemized deduction for most higher-income taxpayers, capped at $10,000 since the 2017 Tax Cuts and Jobs Act (TCJA). The cap applies to the combined total of:

• State and local income taxes (or state sales tax, whichever you choose).
• Real estate (property) taxes.
• Personal property taxes (vehicle registration fees, for example).

At higher incomes, the $10,000 cap is the binding constraint. A New York or California household with $20,000+ of state income tax + $15,000+ of property tax can't deduct the full amount; the over-cap portion is simply lost. This is the "SALT cap" controversy and is one of the most-debated provisions of the post-2018 tax code.

Workarounds for high-SALT households (none a true substitute for lifting the cap):

• Pass-through entity tax (PTET) — most states with high income tax now allow pass-through businesses (S-corps, partnerships, LLCs taxed as partnerships) to elect to pay state income tax at the entity level, which is deductible as a business expense (not subject to the SALT cap).
• Relocating to a no-income-tax state — the nuclear option; state tax goes to zero.
• Charitable bunching — concentrate multiple years of charitable giving into one year to push itemized deductions over the standard threshold.

Mortgage interest

For homeowners, mortgage interest is often the largest itemized deduction. The deduction is calculated based on:

• The loan amount (acquisition debt capped at $750,000 for mortgages originated after 15 December 2017; $1M for earlier mortgages).
• The interest paid during the year (Form 1098 from the lender).
• Average mortgage balance × interest rate = interest paid (approximately).

Example:

• $500,000 mortgage at 6.5%, average balance year 1 = $495,000.
• Interest paid: $32,175.
• Fully deductible (under the $750k cap).

For larger mortgages, the deduction is capped. A $1M mortgage originated in 2024 has $1M × 6.5% = $65,000 of interest, but only $750,000 × 6.5% = $48,750 is deductible.

The mortgage interest deduction is usually a no-brainer for itemizers — if your itemizable interest + SALT + charitable + medical exceeds the standard, you itemize and take the interest too. If it doesn't, you take the standard and the interest is wasted.

Charitable contributions

Charitable gifts to qualified 501(c)(3) organizations are deductible up to 60% of AGI for cash gifts (30% for appreciated property). Excess contributions carry forward for up to 5 years.

Strategies for high-income itemizers:

• Bunching — concentrate 2-3 years of giving into one year via a donor-advised fund (DAF), pushing the year's total over the standard threshold.
• Appreciated stock — donate appreciated long-term securities instead of cash; you avoid the capital-gains tax on the appreciation and get a deduction for the full fair market value (subject to 30% AGI limit).
• Qualified Charitable Distributions (QCDs) — for IRA holders 70½+, direct distributions from the IRA to charity count toward the Required Minimum Distribution without being taxable income.

Medical expenses

Medical and dental expenses are deductible only to the extent they exceed 7.5% of AGI. For most households, this floor is high enough that few medical expenses ever qualify.

Examples:

• AGI $100,000 → 7.5% floor = $7,500. Medical expenses must exceed $7,500 before any deduction applies.
• AGI $250,000 → 7.5% floor = $18,750.

The deduction applies to out-of-pocket medical and dental expenses not reimbursed by insurance: doctor visits, prescriptions, dental, vision, mental health, mileage for medical trips (at the standard medical mileage rate).

Long-term care costs and certain insurance premiums (Medicare B and D for the over-65, qualified long-term care insurance up to age-based caps) are also deductible.

Other itemized deductions

A few smaller categories:

• Investment interest — interest on money borrowed to buy investments. Capped at net investment income; excess carries forward.
• Gambling losses — deductible up to the amount of gambling winnings reported as income.
• Federal estate tax on IRD — income in respect of a decedent (IRD) carries a deduction for the federal estate tax attributable to that income. A complicated area relevant only to inherited retirement accounts.

These rarely move the needle for most taxpayers.

How to decide

The decision is mechanical:

1. Add up your itemized deductions (Schedule A).
2. Compare to the standard deduction for your filing status.
3. Take the larger.

Practical indicators:

• If your home mortgage + property tax + state income tax is close to the standard deduction, you're a marginal itemizer. Adding charitable contributions or bunching strategies can push you over the threshold.
• If your mortgage is paid off and your property tax is modest, you'll rarely itemize.
• If you live in a state with no income tax and have no mortgage, you'll almost certainly take the standard.
• If your income is low but your medical expenses are high, the 7.5% floor makes itemizing rare.

Tax software does the comparison automatically and chooses the larger. Schedule A is required to itemize; otherwise, no action is needed.

Worked examples

Example 1: Single, $80,000 income, no mortgage

Example 2: Single, $80,000 income, mortgage

Example 3: Married filing jointly, $250,000 income, high SALT

Related

• Allowances vs deductions vs credits
• US state taxes: the gap
• Retirement accounts explained
• US Form W-4 explained
• Why the calculator differs from your tax software
• US take-home pay calculator
• Methodology