Know your tax bill before April does.

A real 1040 engine underneath — federal and state, capital gains, self-employment — checked against 176 test returns. An estimate you can plan around, never filed for you.

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Tax estimatorA full return, worked through step by step Capital gainsShort vs long term, and the 0% bracket Self-employmentSchedule SE, QBI and the quarterly problem State taxesThe layer on top of your federal bill