⚙ Interactive calculator — enter values to calculate instantly.
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⚙ Interactive calculator — enter values to calculate instantly.
Every taxpayer can either take the standard deduction or itemize actual deductions — whichever is larger. Since the Tax Cuts and Jobs Act doubled the standard deduction in 2018, roughly 90% of Americans now take the standard deduction. Itemizing only makes sense if your deductions exceed the standard amount.
| Filing Status | Standard Deduction 2026 |
|---|---|
| Single | $15,000 |
| Married Filing Jointly | $30,000 |
| Head of Household | $22,500 |
| Age 65+/Blind additional (single) | +$2,000 |
| Age 65+/Blind additional (married) | +$1,600 each |
Mortgage interest: Interest on up to $750,000 of mortgage debt on primary/secondary residence. On a $500K mortgage at 7%, that is $35,000 first-year interest — easily exceeds standard deduction. State and local taxes (SALT): Capped at $10,000 for all SALT combined (property tax + state income tax). Charitable contributions: Cash donations up to 60% of AGI. Non-cash donations up to 30% of AGI. Medical expenses: Only the amount exceeding 7.5% of AGI.
You should itemize if: you have a large mortgage (interest alone often exceeds standard deduction), you made large charitable donations, you live in a high-tax state (though SALT cap limits this), or you have significant unreimbursed medical expenses. Most renters and those with small mortgages benefit from the standard deduction. When in doubt, calculate both and take the higher amount.
Use this calculator as a starting point, not a final answer. Run three scenarios: pessimistic (lower returns, higher costs, worst-case tax rates), base case (your expected scenario), and optimistic (favorable conditions). The range between these three scenarios tells you how much uncertainty surrounds your plan and how much buffer you need.
Once you have your numbers, cross-reference them with complementary calculators. A mortgage payment should be checked against your overall budget and DTI ratio. A retirement projection should account for Social Security income, potential pension, and healthcare costs in retirement. Tax calculations should be checked against available deductions and credits you may qualify for. No single calculator captures everything.
Where you hold investments matters as much as what you hold. High-growth assets belong in Roth accounts where growth is tax-free. Income-producing assets like bonds belong in traditional 401(k) or IRA where taxes are deferred. Tax-managed index funds belong in taxable brokerage where you can harvest losses. This asset location strategy adds 0.2-0.4% annually to after-tax returns without changing your investments at all.
The lifetime value of proper tax planning for a median American household is approximately $150,000-300,000 in additional wealth at retirement — the difference between tax-smart and tax-naive investment management over 30 years. Most of this benefit comes from three decisions made once: choosing the right account types, maximizing employer match, and selecting low-cost index funds.