Early repayment of a Czech mortgage: rules, fees and limits

Most borrowers meet the rules on early repayment at an awkward moment: they have a bonus, an inheritance or a buyer for the flat, and they ask the bank what repaying will cost. The answer in Czechia depends on a short list of conditions set by the Consumer Credit Act, and the difference between free and charged can be a matter of the month in which you ask.

This explainer sets out the rules in the order a borrower meets them. It is general information, based on sections 117 and 117a of the Consumer Credit Act (zákon č. 257/2016 Sb.) as we understand them, and the details should be checked in the consolidated text and with your lender. It quotes no rates.

The principle: you may always repay

A borrower under a consumer mortgage may repay the loan, in whole or in part, at any time. The bank cannot forbid it. What the law regulates is the cost: when repayment is free, and, when it is not, how much the bank may charge. Our guides to mortgage fixation and refinancing explain the context.

When early repayment is free

The cases below allow repayment without a charge (as of 2026; check the ČNB and the consolidated text of the act).

Two details need care. The annual window is a specific month: the month before the anniversary of the contract. Ask your bank which month that is for you and put it in your calendar. The 25% is of the loan as the law defines it, so confirm the basis with the bank. Second, the free sale route is tied to the date the loan was agreed or last refixed. A borrower whose loan pre-dates the change may be under the older rule unless the fixation has reset since.

When it is not free

If none of the free routes applies, the bank may not charge a penalty for lost interest. It may charge only the costs it reasonably incurred in connection with the early repayment, and for housing loans the charge is capped at 1% of the amount repaid (as of 2026; check the ČNB). The bank must be able to justify the figure.

Under the older regime, which applies to some loans, repayment on a sale after 24 months was capped at 1% and at CZK 50,000. If your loan is old, ask the bank which rules apply to it and in writing.

A hypothetical example

The figures are invented for arithmetic. Suppose a loan of CZK 4,000,000. The annual free allowance is 25%, which is CZK 1,000,000, repaid in the permitted month with no charge. If the same borrower repaid CZK 1,000,000 in another month and no other free route applied, the bank could charge only its reasonably incurred costs, and at most 1% of the sum repaid, which is CZK 10,000. A borrower who waited for the permitted month would pay nothing. The calendar can be worth more than the rate.

You can model how a lump-sum repayment changes the loan with the mortgage calculator on Hypoteky.com, which works from the inputs you give it. It shows the effect on the payment or the term, not the bank's charge.

The trade-offs of repaying early

Free does not always mean wise. Questions to ask before using a lump sum:

• What does the money earn elsewhere? Compare the loan's rate with the rate you could earn on savings, noting that interest on savings may be taxed.
• Do I keep a reserve? Repaying the mortgage with all your cash leaves you without liquidity, and borrowing again is harder than keeping a buffer.
• Reduce the payment or shorten the term? Banks usually let you choose. A shorter term saves more interest. A lower payment gives flexibility.
• Does the fixation end soon? If it does, waiting for the end avoids any question about charges.
• Is there a better use for the cash? For example a more expensive debt.

Selling a flat with a mortgage

When you sell, the buyer's money repays your bank and the lien is released. The charge depends on the rules above and on when the loan was agreed. For loans agreed or refixed since 1 September 2024, a sale at least two years after purchase allows free repayment. For others, the charge is limited to reasonable costs and the 1% cap, and for the oldest loans, the older cap applies. Get a written payoff figure from the bank before you sign a sale contract, and see our guide to selling a flat with a mortgage. For the timeline of the sale itself, see how long it takes to sell a flat in Prague.

Waivers and rate guarantees

Some banks ask borrowers to waive statutory rights, for example the free annual repayment, in exchange for something, such as a rate guarantee when a fixation is about to end. Read what you are agreeing to. A waiver may be worth giving up for a lower rate, or it may cost you an option you later need. This is an area where the exact wording of the law and the contract matters, so check the consolidated text of sections 117 and 117a and ask your bank for the terms in writing.

Refinancing is not the same as early repayment

Moving a mortgage to another bank involves repaying the old loan, so the early repayment rules apply to it. The timing, ideally at the end of a fixation, decides the cost, as our article on refinancing explains. The guide to refinancing on Hypoteky.com gives another overview. Neither replaces the bank's offer.

Insurance is related. If a borrower dies or becomes seriously ill, free repayment is allowed where it reduces the ability to repay, and life cover may repay the loan, as our piece on mortgage insurance and life cover describes.

If the bank gets it wrong

Ask the bank for a written breakdown of any charge. If you think it is not justified or exceeds the limits, complain to the bank first. The Financial Arbitrator, an out-of-court body, handles disputes between consumers and financial institutions, and the ČNB supervises lenders. Our explainer on bank supervision describes their roles.

Frequently asked questions

Can I repay my Czech mortgage early?

Yes, at any time. Whether it is free depends on the case: end of fixation, the annual window, certain life events or, for newer loans, a sale after two years.

How much can I repay free each year?

Up to 25% of the loan, in the month before the contract anniversary (as of 2026; check the ČNB).

What is the most a bank can charge?

Outside the free cases, only reasonably incurred costs, and for housing loans at most 1% of the amount repaid.

Does the rule on selling after two years apply to my old loan?

It applies to loans agreed or refixed since 1 September 2024. Older loans may be under the previous rule. Ask your bank.

A practical next step

Look at your contract for two dates: the end of the fixation and the anniversary of the contract. Put the month before the anniversary in your calendar, and ask the bank in writing which repayment rules apply to your loan.

This is a general explainer, not legal, tax or mortgage advice.