Best Accounting Software for Sole Proprietors in 2026 - Ranking
Ranking of 6 best accounting software for sole proprietors in 2026. Price, feature, and AI comparison - iFirma, wFirma, inFakt, Bookeper AI, and more.
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Choosing accounting software for your sole proprietorship in 2026 comes down to a few key questions: do you want full self-service, AI guidance, or a dedicated accountant? Here's a ranking based on real-world use by IT contractors.
Quick ranking
| # | Software | Best for | Monthly price |
|---|---|---|---|
| 1 | Bookeper AI | IT freelancers wanting AI-powered tax optimization | PLN 0/mo (beta) / PLN 50/mo (planned) |
| 2 | iFirma | Comprehensive package with bank integration | PLN 59-149 |
| 3 | inFakt | Those wanting a dedicated accountant option | PLN 29-249 |
| 4 | wFirma | Traditional form-based accounting with KSeF | PLN 49-129 |
| 5 | Fakturownia | Simple invoicing-first approach | PLN 25-119 |
| 6 | e-Mikrofirma (free) | Absolute basics, government-provided | Free |
What matters most for IT sole proprietors
- Lump-sum tax support -- most IT contractors use the 12% lump-sum rate
- ZUS declaration generation -- monthly DRA/RCA with correct rates
- SAF-T (JPK_V7M) generation -- for VAT taxpayers
- KSeF readiness -- mandatory e-invoicing is rolling out in 2026
- Tax optimization -- comparing taxation forms, Social Insurance programs
Detailed comparison
| Feature | Bookeper AI | iFirma | inFakt | wFirma |
|---|---|---|---|---|
| AI tax assistant | Yes | No | No | No |
| Auto ZUS calculations | Yes | Partial | Partial | Partial |
| KSeF integration | Planned | Yes | Yes | Yes |
| Bank integration | Coming | Yes | Yes | Yes |
| Mobile app | Web | Native | Native | Web |
| Dedicated accountant | No | No | Yes (paid) | No |
| Starting price | PLN 0/mo (beta) / PLN 50/mo (planned) | PLN 59 | PLN 29 | PLN 49 |
Bookeper AI is currently free during beta. The planned entry price after beta is PLN 50/month.
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Automatyzuj swoją księgowość
Bookeper AI automatycznie oblicza ZUS, generuje deklaracje i przypomina o terminach. Oszczędź czas i unikaj błędów.
Wypróbuj za darmoZastrzeżenie: This article is for informational purposes only and does not constitute tax or legal advice. If in doubt, consult a tax advisor or accountant. Tax regulations may change.