Free·2026 tax numbers·Math shown
Calculators
The same math I do in the videos, so you can run it with your own numbers. Nothing you type leaves your browser.
Compound growth
What a starting amount plus a monthly contribution could grow into, and the year you'd cross $100K.
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Tax on selling a stock
The federal tax on a sale, short term vs long term, after any losses you've already taken this year.
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Backdoor Roth pro-rata rule
How much of a backdoor Roth conversion gets taxed when you already have money in a traditional IRA.
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These are estimates for learning, not tax advice. They leave out state taxes and plenty of edge cases, and your real return is your real return. I'm a CPA, but I'm not your CPA. Full disclaimer.