A mortgage starts with repayment and ends 20 to 30 years later. Most of the time there's nothing to do, the repayment leaves automatically. Three moments are worth acting on:
1. End of the fixed-rate period
The bank will send you a new rate, a so-called retention offer. You'll only know if it's any good by comparing it with what others offer. Don't sign it blind; have someone work out what refinancing elsewhere would look like.
2. Extra repayments
By law, you have the right to repay a mortgage in part or in full ahead of schedule. The bank may only charge what it actually cost them, and no more than 0.25% of the amount repaid for each year or part-year remaining until the end of the fixed-rate period, and never more than 1% of that amount. At the end of the fixed-rate period, it can't charge anything.
3. A change in your circumstances
A higher income? Children? Moving? Any such change is a reason to revisit your mortgage, whether for the rate or for the size of the repayment. It's worth reviewing once a year.
Representative example of a repayment
APRC (RPSN in Czech) is the annual percentage rate of charge. Unlike the borrowing rate, it also factors in fees, so you can use it to compare offers against each other.
Mortgage of CZK 4,000,000, rate 4.99%, term 30 years, fixed-rate period 3 years. Monthly repayment CZK 21,448. Total amount to be paid CZK 7,721,433. APRC 5.11%. Calculated using the rate valid as of 1. 11. 2026.