Standard vs Itemized Deduction Calculator 2026
Not sure whether to take the standard deduction or itemize? Enter your expenses and instantly see which method keeps more of your income.
How to Use This Comparator
- Pick your filing status and enter your AGI.
- Enter itemized items: mortgage interest, SALT, charity, medical, and other.
- The tool compares your total itemized deductions against the standard amount.
- It recommends the larger method and shows your extra deduction.
Deduction Rules to Remember
Standard (2026): Single $15,000 · Married $30,000 · HoH $22,500
Itemized caps: SALT ≤ $10,000
Medical > 7.5% of AGI only
Take the GREATER of the two.Standard or Itemized — Which Wins?
Most taxpayers take the standard deduction because it is simpler and often larger. Itemizing pays off when you own a home with a big mortgage, live in a high-tax state, or give generously to charity. This comparator removes the guesswork by doing the math side by side.
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Worked Example
A married couple filing jointly in 2026 has $30,000 of itemized deductions: $10,000 of state and local taxes, $12,000 of mortgage interest, $5,000 of charitable gifts, and $3,000 of medical costs above 7.5% of AGI. Their standard deduction that year is $30,000. Because the itemized total equals the standard amount, it makes no difference which they choose; they take the standard for simplicity. Had itemized deductions reached $34,000, they would itemize and save the extra $4,000 times their marginal rate. The SALT deduction is capped at $10,000, so any state and local tax above that does not help. The calculator compares your itemized list against the 2026 standard amount and tells you which is larger.
Common Mistakes to Avoid
A common mistake is itemizing when the standard deduction is bigger, which wastes effort and risks errors. Another is forgetting the $10,000 SALT cap, which limits the value of state income and property taxes combined. Medical expenses are only deductible above 7.5% of AGI, so most healthy filers get nothing there. People also mix personal and business expenses, or claim charitable gifts without records; gifts over $250 need a receipt. Finally, the standard amounts for 2026 are $15,000 single, $30,000 married, and $22,500 head of household, so confirm your filing status before choosing.
When to Consult a Tax Professional
The calculator picks the larger deduction, but consult a CPA when your itemized total is close to the standard amount or when major life events hit. Buying a home, a large medical year, or a big charitable gift can swing the decision and interact with income timing. Those with business income should separate Schedule C deductions from personal ones to avoid double counting. If you are considering bunching deductions into alternating years to exceed the standard amount, an advisor can model whether the strategy actually saves tax for your situation.
Sources & Further Reading
Standard deduction amounts and the SALT cap are detailed by the IRS at IRS.gov. The Federation of Tax Administrators lists state deductions at TaxAdmin.org. For income and expense context the Census Bureau provides data at Census.gov. The calculator's thresholds match the IRS figures.
Disclaimer: SaveTaxUS calculators provide estimates only and do not constitute official tax advice. All calculations run locally in your browser — we never upload your income, property, or financial data.
Data source: Rates are based on publicly available 2026 IRS federal brackets and state tax publications. For formal filing, consult a licensed CPA. Last updated: July 2026.