Free, no sign-up

Tax tools

A small, growing set of free single-purpose tools I've built for tax work. Use them yourself, or send someone a direct link.

Federal Income Tax Estimator What you will owe for the year: 2025 or 2026 ordinary brackets, standard deduction, long-term capital gains, and the child tax credit. MACRS Depreciation Calculator Build a full depreciation schedule with Section 179, 100% bonus, and straight-line, across 200+ assets from IRS Pub 946. S-Corp vs. Schedule C Compare sole proprietor vs. S-corp: SE tax, payroll, the Section 199A QBI deduction, and the reasonable-salary sweet spot. Quarterly Estimated Tax & Safe Harbor How much to pay each quarter (Form 1040-ES): the safe-harbor test (90% / 100% / 110%), self-employment tax, and a quarterly schedule. IRC Reader Read and navigate the Internal Revenue Code in a clean, searchable interface. Opens on irc-reader.vercel.app. Tax Year Age Calculator Enter a date of birth and tax year to get the federal tax age, the interview questions to ask, and common age-related federal tax considerations.

Want your firm running on tech that actually helps? I'm Yehuda Tenenbaum, EA. I help tax and accounting firms simplify their tech stack, get more out of TaxDome, and automate the busywork, so the work runs the way you want.

See how I can help →