PRIBOR (Prague interbank rate)
PRIBORPRIBOR (Prague Interbank Offered Rate) is the rate at which Czech banks lend to each other; 3-month PRIBOR was about 3.9 % in October 2026. It is set every working day for several maturities, such as 1 week, 3 and 6 months, from quotes by reference banks, and it serves as the base for variable-rate mortgages and business loans.
Example
A variable-rate mortgage (variabilní sazba) might be priced at 3M PRIBOR plus a margin of 1.2 percentage points. With 3M PRIBOR around 3.9 %, that gives about 5.1 %, close to the August 2026 average for new mortgages of 5.00 %. On CZK 4,000,000 over 25 years the payment comes to roughly CZK 23,620 a month, and every further 1 pp adds about CZK 2,300–2,400.
In practice
Few Czech mortgages are tied directly to PRIBOR; most borrowers choose a fixed rate. If yours is variable, look up in the contract how often the rate resets (usually quarterly) and what margin sits on top. Under Act No. 257/2016 Coll., a variable-rate loan can be repaid at any time free of charge. Comparing PRIBOR head to head with a fixed mortgage rate tells you little, because the two price money over different periods. When a variable rate pays off better than a fixation is covered in a separate guide.
How it differs
The repo rate is the ČNB's rate towards banks; PRIBOR is the rate between banks and usually sits slightly higher. An interest rate swap prices money years ahead, which is why it drives 3–10-year fixed periods more than PRIBOR does.
Frequently asked questions
What is PRIBOR?
The Prague Interbank Offered Rate: the price of unsecured koruna loans between banks, set every working day for several maturities. Variable-rate mortgages are priced as PRIBOR plus the bank's margin.
What is the PRIBOR rate today?
3-month PRIBOR was about 3.9 % in October 2026. Its administrator, Czech Financial Benchmark Facility, sets it every working day, and since 1 August 2026 the ČNB website shows it with a delay of five business days.
How does PRIBOR affect a variable-rate mortgage?
Your rate is PRIBOR plus a fixed margin, usually reset every quarter. With 3M PRIBOR at 3.9 % and a margin of 1.2 pp you pay about 5.1 %, and each further 1 pp adds about CZK 2,300–2,400 a month on CZK 4,000,000 over 25 years.
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