What do I actually owe, and what can I shave?

Tax Bracket Calculator (2026)

Find your 2026 federal tax bracket, the tax you owe, your marginal and effective rates, and how much more income fits in your bracket.

401(k) Contribution and Match Calculator

See your 2026 401(k) limit, how much employer match you are leaving unclaimed, what a pre-tax or Roth contribution costs, and what it grows to.

HSA Retirement Calculator

See the tax an HSA saves each year, what it grows to by retirement, and how it compares with a taxable account and a traditional 401(k) for the same take-home cost.

Backdoor Roth Calculator

Enter your other IRA money and see how the pro-rata rule splits a Roth conversion into a tax-free part and a taxable part, what the tax is, and how to avoid it.

Capital Gains Harvesting Calculator

See the 2026 federal tax on selling an investment at a long-term gain, and how much gain fits in the 0% band this year given the rest of your income.

Mega Backdoor Roth Calculator

See the room your 401(k) could have for after-tax contributions this year, after your own contributions and the employer’s, and what moving that money into a Roth is worth by retirement.

State Income Tax Comparison

Compare the 2026 state income tax on your wages between any two states, with every state and D.C. ranked at your income.

Estate Tax Calculator

Enter what you own and owe, and see whether your estate is over the 2026 federal exclusion, how much tax that would mean, and how much room is left under it.

Roth Conversion Calculator

See the 2026 tax a Roth conversion adds when it also makes more of your Social Security taxable and can push you over a Medicare premium line, and how much room you have before each one.

New Tax Deductions Calculator

Enter what you earned in tips, overtime pay and vehicle loan interest, and see what each deduction allows at your income and what it saves on your 2026 federal tax.

Quarterly Estimated Tax Calculator

Work out what to send the IRS on each 2026 due date to avoid the underpayment penalty, and what missing a date would cost.

Standard vs Itemized Deduction Calculator

Add up your deductions under the 2026 limits and see which choice lowers your federal tax, and by how much.