Federal + state tax modeling: AMT, NIIT, IRMAA, QBI, PTET, Roth conversions, RSU/ISO/AMT, state pro-forma comparison. Runs entirely in your browser — no data uploaded.
Verified 2026 federal tax brackets and OBBBA 2025+ provisions, plus approximate state-tax estimates for all 50 states + DC.
Federal + state + FICA + Medicare + Additional Medicare + NIIT + AMT — your tax burden modeled line-by-line.
Compare a hypothetical move — e.g. "what might my state tax look like in Texas?" — using approximate state-tax estimates for all 50 states + DC built on simplified brackets. Educational estimates only — verify state figures with your state tax authority or a tax preparer before any move-related decision.
Multi-year planner that models bracket-aware Roth conversions year by year, accounting for projected tax brackets.
Models RSU vesting tax, detects ISO-AMT traps before you exercise, and shows ESPP optimization scenarios.
See your return assembled the way the IRS sees it — every line from Wages through Tax Owed, with explanations of where each number comes from.
Educational estimates that include the SALT cap increase ($40k), QBI 199A, tip income deduction, overtime deduction, auto-loan interest, and senior deduction. Verify with a qualified professional before acting.
1040-ES calculator + safe-harbor (110% prior-year rule). Schedule your quarterly payments to avoid IRS underpayment penalties.
The Medicare premium surcharge that catches retirees off-guard. We forecast it based on your MAGI projections so you can manage it.
Pass-through entity tax (PTET) elections + Section 199A QBI deduction modeled side-by-side, so small-business owners can prepare better questions for their CPA. Educational estimates only.
This product is being built and refined. All tools are open to use during the beta.
Runs entirely in your browser. No install, no login, no credit card. In beta — all tools are open to use.