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Private Loan Calculator

A private or family loan is a common way to borrow money without a bank. This calculator computes total interest, the total amount to repay and either a monthly instalment or a lump-sum payment at the end of the loan term. Enter the loan amount, annual interest rate and number of months to get instant results.

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How the private loan calculator works

The calculator uses simple (flat-rate) interest — not compound: 1. Total interest = principal × (rate%/100) × (months/12) 2. Total repayment = principal + total interest 3. Monthly instalment = total repayment / number of months 4. Lump-sum repayment: full amount due at the end of the term A 0% rate is fully supported.

Example: 5,000 PLN for 12 months at 0% — family loan

A 5,000 PLN family loan for 12 months at 0%: interest = 0 PLN, total repayment = 5,000 PLN. Monthly instalment: 5,000 / 12 = 416.67 PLN. If a friend lends at 10% p.a. for 24 months: interest = 5,000 × 10% × 2 = 1,000 PLN, total = 6,000 PLN, instalment = 250 PLN/month.

Frequently asked questions about private loans

Is a private loan between friends taxable in Poland?

Yes — a loan from someone outside the closest family group (tax group I/II) is subject to civil-law transaction tax (PCC) at 0.5% of the loan amount. A PCC-3 declaration must be filed within 14 days.

When is a family loan exempt from PCC?

Loans within the closest family (group I: spouse, children, grandchildren, parents, grandparents, siblings) are exempt from PCC if reported to the tax office on form PCC-2 within 6 months of receiving the funds.

Does a private loan agreement need to be in writing?

For amounts above 1,000 PLN Polish law requires a documentary form (email, SMS or paper). For amounts above 10,000 PLN a signed written agreement is strongly recommended.

The maximum statutory rate is twice the legal interest rate (currently about 18.5% p.a. in 2024). Clauses exceeding this limit are void by operation of law.

Simple interest: total interest = principal × rate × (months/12). Total repayment = principal + interest. Monthly instalment = total / months. For a lump-sum repayment the full amount is due at maturity.

Key elements: names of parties, amount and currency, disbursement date, interest rate (or zero), repayment schedule, any collateral and consequences of default.

Yes — interest received on a private loan is taxable income for the lender (declared in the annual PIT return). A 0% loan is simpler from a tax standpoint.

The lender may pursue a civil court claim. The limitation period for loan repayment claims is 6 years (3 years if the lender operates a business). The debt may also be reported to credit registers.

No credit scoring, BIK check or bank collateral is required. The rate is negotiated freely (within legal limits). If the lender is not a business, consumer credit law does not apply.

No — the calculator covers only principal and interest repayment. Calculate the 0.5% PCC separately using the PCC calculator on this site.

Results are for informational purposes only and do not constitute legal or tax advice. Simple interest is a simplification — actual agreements may use compound or variable rates. For tax implications (PCC) consult a qualified adviser.

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