Tax calculations
PIT-38, PIT-ZG, rates, methods.
What is PIT-38?
PIT-38 form basics for investors
8 min readUpdated: 15.01.2026
PIT-38 PDF Export
How to preview and save the PIT-38 form as PDF
3 min readUpdated: 23.02.2026
What is PIT-ZG?
When is the PIT-ZG attachment required
7 min readUpdated: 15.01.2026
Tax rate 19%
How the Belka tax and the 19% rate work
4 min readUpdated: 10.01.2026
How is tax calculated?
Step-by-step tax calculation algorithm
6 min readUpdated: 12.01.2026
Currency conversion by NBP
Automatic conversion using NBP exchange rates
5 min readUpdated: 10.01.2026
Deductible costs
What can be deducted as a tax-deductible cost
5 min readUpdated: 8.01.2026
Loss carryforward from previous years
How to carry forward losses from previous years
6 min readUpdated: 10.01.2026
Foreign tax credit
Deducting tax paid abroad
7 min readUpdated: 12.01.2026
PIT-38 vs PIT-ZG
8 min readUpdated: 25.01.2026