Professional QBI Deduction Calculator
Stop guessing at Section 199A deductions. Calculate with IRS-compliant accuracy, optimize across entities, and keep your data completely private.
Why QBI Calculations Go Wrong
Section 199A Is the Most Complex Individual Tax Deduction
Spreadsheet calculations miss SSTB phase-outs, aggregation opportunities, and W-2 wage limitations. One wrong threshold and you leave thousands on the table, or worse, trigger an audit.
One App. Every Entity. IRS-Compliant Results.
All 9 Entity Types
Schedule C sole proprietors to foreign partnerships. Every entity type handled with the correct rules, limitations, and phase-outs.
Real IRC References
Every calculation cites specific IRC section 199A subsections. Not guesswork; verifiable against IRS publications.
Aggregation Optimizer
Automatically finds the best entity groupings to maximize your deduction under IRC section 199A-4.
Your Data Stays Local
Zero cloud. Zero telemetry. Zero analytics. All calculations run locally on your machine. Nothing is ever transmitted.
How It Works
Four steps from raw data to IRS-ready results
Add Your Entities
Enter business income, W-2 wages, and qualified property basis for any of 9 entity types. Or scan documents with OCR to extract data automatically.
Run the Analysis
Automatic W-2 wage limitations (50% and 25%/2.5% tests), SSTB phase-out calculations, and threshold checks with IRC references.
Optimize
S-Corp salary optimizer, multi-entity aggregation engine, and what-if scenarios to find the maximum compliant deduction.
Export Results
Professional PDF reports, Excel workbooks with formulas, and Form 8995/8995-A ready output for filing.
2025 Tax Year QBI Thresholds
Built for Accuracy, Not Complexity
IRS Worksheet Accuracy
Calculations match IRS worksheets exactly. Every result references specific IRC section 199A subsections you can verify.
What-If Scenarios
Test different income levels, entity structures, and filing statuses to find the optimal QBI deduction strategy.
Professional Reports
Generate PDF reports with detailed calculation breakdowns, Excel workbooks with formulas, and charts showing phase-out impacts.
Complete Data Control
Save analyses locally, export to any format, and import from tax documents via OCR. Your data never leaves your device.
Built-in Guidance
Contextual help explains each calculation step with links to relevant IRS publications and IRC sections.
Smart Validation
Automatic error checking catches common mistakes before they affect your results. Diagnostic codes flag potential issues.
Professional Software in Your Language
Full functionality available in 13 languages, with more being added
Privacy & Security
Zero Tracking
- No analytics or tracking
- No cookies stored
- No user accounts
- No usage statistics
Local Processing
- All calculations on your device
- No cloud storage
- Desktop works offline
- Data never transmitted
Verified Publisher
- DigiCert EV code signed
- Home Office OS LLC verified
- No security warnings
- Enterprise approved
Choose Your Version
Web Version
Instant Access- No installation required
- Works on any device
- All 13 languages
- Always up to date
- Browser-based privacy
Free forever with watermark
Desktop Version
Maximum Privacy- Complete offline operation
- DigiCert signed installer
- Fastest performance
- No internet required
- Professional installation
10-day trial, pay what you like
Professional Disclaimer
This software calculates QBI deductions based on current IRS regulations and IRC section 199A. It is designed to assist tax professionals and business owners in calculating Section 199A deductions. Complex situations may require professional consultation. While we ensure calculation accuracy, users should verify results with current IRS publications.
© 2026 Home Office OS LLC.
Frequently Asked Questions
Who needs QBI deduction calculations?
Business owners with pass-through income including sole proprietors, partners, S-corp shareholders, and some trust beneficiaries. If you receive Schedule K-1 or have Schedule C income, you likely qualify. In 2022, 25.7 million tax returns claimed a Section 199A deduction totaling $216 billion.
How accurate are the calculations?
Every calculation references specific IRC section 199A subsections and matches IRS worksheets. We implement all limitations, phase-outs, and special rules including SSTB classifications, W-2 wage tests, UBIA qualified property, and aggregation requirements.
Can I calculate for prior years?
Yes. The software includes accurate calculations for all years 2018-2025 with correct historical thresholds, phase-out ranges, and tax brackets for each year.
What does "Pay What You Like" mean?
You choose your price. We suggest $199/year for the desktop version, but you pay what makes sense for your situation. The web version is free with a watermark.
Do you really not track users?
Correct. No analytics, no cookies, no tracking. We use privacy-respecting fonts from Bunny.net instead of Google. We genuinely do not know how many users we have or how they use the software.
What are the educational guides?
We offer three guide levels: a beginner guide explaining QBI in plain language for business owners, an intermediate guide for tax professionals covering W-2 limitations and aggregation, and an advanced technical deep dive with IRC references and calculation methodology.