Big Beautiful Bill Tax Calculator

Compare Your Taxes Under the Big Beautiful Bill and Pre-TCJA Tax Rules

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About This Calculator

OBBA (One Big Beautiful Bill Act)

This scenario calculates your estimated tax burden under the proposed OBBA tax rules.

View Official Bill Text

Pre-TCJA Rules

This shows your tax obligation under the pre-TCJA tax rules (before Trump's tax cuts).

IRS TCJA Business Guide

Frequently Asked Questions

Sources & References

📋Official Legislation

One Big Beautiful Bill Act

House Budget Committee

Tax Cuts and Jobs Act of 2017

H.R.1 - Congress.gov

🏛️IRS Resources

TCJA Business Comparison

IRS.gov

QBI Deduction Guidelines

Section 199A Resources

All calculations are based on publicly available information from official government sources. This tool is for educational purposes and should not replace professional tax advice.