Loan calculators

How to read the results of these calculators

Each of the five calculators answers a different question that comes up before taking a loan. „How much can I borrow” works out the maximum monthly payment at a DSTI of 40% — about as far as Polish banks usually accept, although they go below it for lower incomes. The cost module shows what you actually pay back: not the headline rate, but the full RRSO with the arrangement fee and any mandatory insurance.

The most underrated is the early-repayment calculator. The Polish consumer credit law (art. 48–52) gives you the right to overpay at any time, and the bank has to refund a proportional part of the fee. Type in an extra monthly amount and see how many months and how much interest you cut — on a 60 000 PLN loan the difference can run into several thousand zloty.

The BIK score here is indicative. Only BIK (the Polish credit bureau) knows the exact figure, but the simulation points to where your payment history and debt level are pushing it. Treat the result as a direction, not a verdict — before applying, pull your actual report at bik.pl.

All the maths runs in your browser. We send nothing to a server, so you can test different amounts and terms without giving up any personal data — none of these simulations leaves a trace in your credit history.

RRSO calculator — the formula every bank uses

RRSO is computed from the formula in appendix 4 of the Polish consumer credit law. The formula iterates the cash-flow stream until the sum of discounted instalments equals the disbursed amount. In practice the calculator fills in four numbers for you: loan amount, nominal rate, arrangement commission, repayment term. The output is RRSO in percentage points. Every bank in Poland uses the same formula, so the value computed in our calculator matches the one you'll see on the first page of the bank contract.

Consolidation calculator — when it pays off

You enter the details of your current loans (RRSO, remaining amount, remaining term), the calculator computes the weighted RRSO of your existing obligations. You then compare that against the RRSO of the proposed consolidation loan. If the gap is bigger than 3 percentage points and the remaining term is longer than 24 months, consolidation pays off mathematically. A smaller gap means operation costs (the consolidator's commission, early-repayment fees) eat the saving. Short version, the calculator shows the breakeven point in one click.

Creditworthiness calculator — your real shot

You enter net income and the sum of current instalments. The calculator computes DTI (debt-to-income, the ratio of debt to income). Above 50% DTI there's practically no acceptance at any Polish bank. 40-50% is the warning band, acceptance only on a perfect BIK. Below 40% — the road is open. That's the number you won't see in a bank ad, but the one that decides whether your application gets through or not.