Employment — Contracts
10 articlesCivil contracts — work, commission, preliminary — form, legal consequences and the most common mistakes.
Guides in this category
Contract‑for‑work net — how to calculate gross to net
How to calculate net pay under a contract‑for‑work: KUP 20%/50%, PIT base and advance. Examples and checklist.
Mandate vs employment contract — differences and costs
Mandate vs employment: ZUS, PIT, leave, minimum hourly rate, termination and real cost for the client.
Contract of mandate cost — how to calculate and what affects it
Cost of a mandate contract for the client and net pay for the contractor: ZUS, tax, minimum hourly rate and practical examples.
Termination of a mandate contract — rules, notice and risks
How to terminate a mandate contract: form, notice, important reason and liability risks.
Mandate contract template — clauses and checklist
Mandate contract template: essential clauses, optional protections and common mistakes.
Labour law changes in Poland 2026: seniority, documents, pay transparency
Key 2026 labour law updates: new seniority rules, electronic HR documents and pay transparency obligations.
Mandate contract and ZUS — when contributions apply
When ZUS contributions apply to a mandate contract, common exceptions and how this affects cost and net pay.
Mandate contract tax — PIT, KUP and settlement
Mandate tax basics: PIT advance, KUP, PIT‑11 and annual settlement. Practical tips and common mistakes.
Mandate contract — minimum hourly rate and time records
When the minimum hourly rate applies to a mandate, how to track hours and common exclusions.
Mandate contract basics — duties, clauses and risks
Mandate contract basics: key clauses, duties, ZUS/tax implications and when another form is safer.
Related calculators
Tools to help you calculate and compare
Contract‑for‑work net calculator
Salary and employment forms
Contract of mandate cost calculator
Salary and employment forms
Net salary calculator — gross to net
Salary and employment forms
Tax-deductible costs (KUP) calculator
Taxes and contributions
B2B calculator — net, contributions, ZUS
Salary and employment forms
Cost of employee calculator
Salary and employment forms
Related accounting office specialisations
Find an accountant specialising in this area
FAQ: Contracts
Answers to the most common questions on this topic
Gross-to-net salary, B2B, work contract, leave, employee costs, dismissal and severance. Guides explain procedures and include calculators for quick value computation.
As a rule, no — a material change requires an amending notice or bilateral agreement. The guide describes the procedure, deadlines and consequences.
The B2B vs. employment contract calculator factors in tax, ZUS, health insurance and business costs. Compare both forms at the same employer cost level.
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