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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.

Journal Entry Lab Post a journal entry and watch it land on a balance scale: Assets on one pan, Liabilities and Equity on the other, always level. Presets, guided scenarios, T-accounts, and a trial balance, for teaching debits and credits. 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. The Dependent Trail Walk Steps 1 through 5 of the Form 1040 dependents flowchart one question at a time. See if a person is your dependent, and whether they bring the child tax credit or the credit for other dependents. IRS Notice Roadmap Look up an IRS notice by number (CP14, CP2000, LT11, Letter 1058) and read what it means, where it sits in the IRS process, and the next steps. All 148 stops of the Taxpayer Advocate Service roadmap in one searchable page. Pomodoro Timer A focus timer for working in timed sprints with breaks in between. Handy for grinding through a return stack. Opens on y10-pomodoro-timer.vercel.app.

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.

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