Annual Tax Settlement Checklist for Sole Proprietors 2026
Annual settlement checklist for sole proprietors in 2026: what to close before PIT, what data to prepare, and how not to leave the most important things to the last week.
The annual settlement for a sole proprietor shouldn't begin in the week of PIT filing. The smoothest scenario is having months already closed, consistent documents, and a clear list of gaps to fill.
Stage 1: Close the year operationally
Before entering forms, make sure:
- All monthly revenue records are complete
- All SAF-T files have been submitted
- All ZUS DRA declarations filed
- Bank statements reconciled with invoices
Stage 2: Gather annual data
- Total annual revenue
- Total Social Insurance contributions paid
- Total health insurance contributions paid
- Health insurance deductions used
- Any corrections submitted during the year
Stage 3: Generate the annual return
- Lump-sum: PIT-28
- Flat tax: PIT-36L + PIT/B
- Progressive scale: PIT-36 + PIT/B
Stage 4: Annual health insurance settlement
Submit the annual health insurance settlement alongside your PIT by 30 April.
Common mistakes to avoid
- Forgetting to include December contributions (paid in January)
- Exceeding the annual health insurance deduction limit
- Not reconciling monthly advance payments with annual totals
- Filing the wrong PIT form for your taxation type
Useful calculators
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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.