All calculators
Twenty calculators for the 2026 US tax year. Everything runs in your browser — no inputs leave your device.
Tax Calculators (2026)
Category →
SALT Deduction Calculator
How much of your state and local tax payment survives the 30% phaseout.
AMT Calculator
Alternative Minimum Tax owed once your exemption starts eroding.
Tips, Overtime, Car Loan & Senior Deductions
Stack all four OBBBA deductions with their separate MAGI phaseouts.
Quarterly Estimated Tax Calculator
Self-employment tax, income tax and the safe harbor that avoids a penalty.
Severance Pay Tax Calculator
What actually lands in your account after supplemental withholding.
Mortgage Calculators (2026)
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Mortgage Recast Calculator
Three ways to use a lump sum, compared on payment, interest and payoff date.
Biweekly Mortgage Calculator
True biweekly versus the 13th-payment approximation, and what each saves.
HELOC vs Cash-Out Refinance
Keep a low first mortgage or replace it — compared on blended rate.
Mortgage Points Calculator
How long you must keep the loan for discount points to pay off.
ARM vs Fixed Calculator
Best and worst case adjustable-rate paths against a fixed comparison.
Retirement Calculators (2026)
Category →Health & Medicare Calculators (2026)
Category →Auto Loan Calculators (2026)
Category →Legal & Estate Calculators (2026)
Category →Money & Planning Calculators (2026)
Category →Unit & Currency Converters
Category →Currency, units, time zones and file sizes. In development.