Free Section 199A tools for pass-through business owners.
QBICalculator provides free Section 199A tools for estimating your qualified business income deduction, including the W-2 wage, property, and SSTB limitations. The 20% deduction under IRC Section 199A sounds straightforward until income clears the threshold. Then it is not.
The site is independently operated. All calculations run in your browser and nothing you enter is stored or transmitted. No account required, no data sent anywhere.
All results are educational estimates, not tax advice. The QBI deduction involves rules that interact in ways a calculator cannot fully model. Section 199A was made permanent starting in 2026 by the One Big Beautiful Bill Act (P.L. 119-21), and thresholds are re-indexed for inflation every year. Confirm anything material with a qualified tax professional before filing.