A mortgage in Poland: 7 checks before you sign

A home can feel right long before the financing is clear. Whether you are buying your first apartment or planning a move, a little preparation can make the mortgage conversation more useful. These seven checks focus on a residential mortgage in Polish złoty (PLN), with the Polish terms you will encounter along the way.

1. Start with a payment that fits your life

The amount a bank may lend and the amount you feel comfortable repaying are different questions. A lender assesses income, its stability, living costs and existing commitments. UKNF explains the assessment principles.

Make your own monthly budget before choosing a property price. Include housing charges, utilities, transport, childcare, other debts and regular saving. Leave room for repairs and changes in income. Ask yourself: would the payment still feel manageable if your household had a more expensive month?

2. Separate your deposit from your other savings

Your own contribution is called wkład własny. For ordinary residential lending, KNF’s Recommendation S generally limits loan-to-value (LTV) to 80%, or 90% with specified additional protection. This commonly means planning for a 20% deposit, or 10% where the bank accepts that structure. The bank’s valuation matters; do not assume it will match the purchase price. See Recommendation S, section 15.5.

Guarantee-backed housing programmes have separate eligibility rules, so the standard deposit figures do not describe every case. Check the government’s programme guidance.

A simple planning example. For a PLN 600,000 property, a PLN 120,000 contribution leaves PLN 480,000 to finance before any financed fees. This is an illustration, not a bank offer. Keep purchase expenses, moving costs and your emergency reserve separate from the deposit.

3. Understand what “fixed” means in the offer

With a variable rate, the interest calculation follows the contractual benchmark and margin, so payments can rise or fall. A periodically fixed rate protects against market-rate changes during the agreed period, but it does not automatically fix the cost for the whole mortgage term. KNF compares the rate models.

Under Recommendation S, the fixed-rate period should normally be at least five years. Ask what happens afterwards: when will the next offer arrive, how will a new rate be set, and what applies if you do not agree to it? UKNF’s explanation of periodically fixed rates.

Ask the bank to show a payment scenario with a higher rate as well as the initial payment. A future rate reduction is a possibility, not a household budgeting plan.

4. Read the full cost, not just the headline rate

Request the personalised mortgage information sheet (formularz informacyjny dotyczący kredytu hipotecznego). Compare the nominal rate, RRSO (the annual percentage rate of charge), total amount payable and the underlying assumptions. RRSO helps compare borrowing costs; it is not a forecast of future variable rates or your complete home-purchase budget. The Mortgage Credit Act sets out the information sheet and cost definitions.

Put these questions beside each offer:

• Which fees are paid upfront, and which are added to the loan?

• Which insurance, account or card conditions affect the price, and for how long?

• What changes if you stop using an additional product?

• Which property, notarial, registration or tax costs must you budget for separately?

5. Compare the same amount and repayment term

A lower monthly payment does not by itself mean a cheaper mortgage. For the same loan and unchanged interest rate, spreading repayment over more months normally lowers the payment but increases total interest. Compare offers over the same term first; then consider whether a different term suits your budget.

Ask to see both equal instalments (raty równe) and decreasing instalments (raty malejące) where available. Review the first payment, the repayment schedule and the total projected outflow. Check what the displayed payment includes: insurance and account charges may sit outside the principal-and-interest instalment.

Use the monthly payment calculator to explore your own assumptions. A calculator estimate is a starting point for a conversation; it does not confirm borrowing capacity or approval.

6. Check the rules for overpayments and a future move

You may later want to overpay, sell or refinance. Check the procedure, any early-repayment compensation and whether an overpayment reduces the instalment or shortens the term. The rules can depend on the rate type and the date of the agreement, so do not assume every mortgage is free to repay early. The Financial Ombudsman explains the distinction.

If you already have a mortgage, compare a refinancing proposal after its costs, using your actual outstanding balance and remaining months. A lower rate can be attractive, but the size of the loan, the remaining term and switching costs determine how useful the change may be.

7. Bring a clear picture to the first conversation

You do not need to arrive with a perfect spreadsheet. A short, accurate summary is enough to make an initial discussion more focused. Prepare:

• The property price or budget, your available deposit and the savings you want to keep aside.

• Your income sources, employment or business situation, and regular household commitments.

• Existing loan payments, card limits and other financial obligations.

• Your preferred repayment term, purchase timing and questions about rate changes.

• Any offers you already have; if refinancing, your current agreement and latest repayment schedule.

The bank will specify the documents and income history it needs for an application. Before signing a property agreement with payment deadlines, align the financing timetable and understand what happens if the loan is not approved in time.

A clearer next step

Choose the questions that matter most to your situation, save the offers you want to compare, and review them with Marcin. The aim is a financing plan you understand, with costs and assumptions you can explain in your own words.

Editorial review: 25 October 2026. Sources are linked beside the relevant points. This guide covers general principles, not current bank quotations or an individual recommendation. Requirements and programme availability can change. Both images are AI-generated illustrations, not properties offered for sale.