Guides
50% tax‑deductible costs — when and how to apply
When 50% KUP can be applied, which income qualifies, how to document copyright and keep within limits.
BIK and creditworthiness — how history affects scoring
BIK vs creditworthiness: what lowers it and how to build a positive history.
Gross to net — how to calculate salary step by step
How to convert gross to net: ZUS, health contribution, PIT and costs. A clear step‑by‑step method and common mistakes.
Gifts and reserved portion — impact on calculation
How gifts change the reserved portion, which transfers are included and how to document them. Practical guide with examples.
Revenue register on lump‑sum — how to keep it
The revenue register is the foundation of lump‑sum. What it must include, how to split rates and how to avoid mistakes.
Inflation and wages — impact on pay
How inflation affects wages, minimum pay and unemployment.