Big Beautiful Bill Calculator

Take the guesswork out of Washington’s newest tax proposal.
One Big Beautiful Bill Impact Calculator turns the 900-page H.R. 1 (119th Congress) into a quick, clear dollar figure—so you can see exactly how your federal taxes might change in 2025 compared with 2024.

Why you’ll love it
• Instant answers – Get results in under a second.
• 100 % offline & private – Every calculation runs on your device; we collect zero data and use no analytics SDKs.
• Side-by-side view – See 2024 vs 2025 taxes, refunds, effective rates, and the biggest driver of change.
• For every filer type – Wage earners, gig workers, and small-business owners can all model their numbers.
• Material 3 design – Clean, accessible UI with both light and dark mode.
• WCAG 2.2 AA – Built to be usable with screen readers, large text, and high-contrast settings.

What you can enter
Filing status (Single, Married Filing Jointly, etc.)

W-2 wages and 1099/self-employment income

Qualified Business Income toggle

Dependents under and over 17

Itemized deductions or Standard deduction

State & Local Taxes paid (SALT)

Child-care expenses for the CDCTC

How it works
You fill in your 2024 numbers.

The app applies current-law brackets, credits, and deductions.

It instantly reruns the same inputs under H.R. 1’s 2025 rules.

You get a clear “Increase/Decrease” dollar amount, percent change, and credit breakdown.

All tax logic is coded directly from IRS Rev. Proc. 2023-34 (2024 tables) and the exact bill text (§§ 70101 – 70105). A 200-scenario test suite ensures 100 % calculation accuracy.

Your privacy, guaranteed
No sign-up, no cloud, no ads.

Data never leaves your phone.

Open-source tax engine for transparency (link in Settings).

Roadmap (free updates)
Save & compare multiple scenarios

Spanish localization

Withholding optimizer and pay-stub planner

Optional, anonymous usage analytics (opt-in only)

Disclaimer
This app provides estimates based on the bill’s current language and may change if the legislation changes or the IRS issues new guidance. It is not tax or legal advice. Always consult a qualified professional for your specific situation.