How to choose a mortgage in 2026 — complete guide
Choosing a mortgage is one of the most important financial decisions of your life. In 2026, the average rate on new Czech mortgages is around 4.43 %, but a specific offer for you can vary by 0.5–1 percentage point. On a 4-million-CZK mortgage for 25 years, that's a difference of 500,000 to 1,000,000 CZK in total interest. This guide will help you make the right choice.
Step 1: Calculate your budget — how much you can borrow
Before you visit a bank, you need to know your limits. The Czech National Bank (ČNB) enforces three rules every bank must follow:
- LTV max. 80 % (90 % for under-36s) — bank lends max 80 % of property value
- DSTI max. 45 % (50 % for under-36s) — total monthly loan payments cannot exceed 45 % of net monthly income
- DTI max. 8.5× (9.5× for under-36s) — total debt cannot exceed 8.5× annual net income
Use our quick check to see how much you actually qualify for.
Step 2: Compare offers from at least 3 banks
Don't take the first offer. Different banks offer different rates to the same client. The difference of 0.5 % over 25 years is hundreds of thousands of CZK.
What to compare:
- Interest rate — drives the monthly payment and total interest paid
- APR — total annual cost including fees; always higher than the rate
- Fixation period — short (1–3 years) is flexible, long (7–10 years) protects from rate hikes
- Fees — arrangement, account maintenance, valuation, early repayment
- Insurance requirements — whether the bank requires payment-protection or life insurance
Step 3: Choose the right fixation period
It depends on your outlook. Shorter fixation (1–3 years) is advantageous if you expect further rate cuts. Longer (7–10 years) protects you against rate increases.
In 2026, most experts recommend 3–5 year fixation as a sensible compromise. ČNB has been holding rates steady through Q1 2026, and 5-year fixation gives you stability without locking you in too long.
Step 4: Read the contract and watch for traps
Before signing, check:
- Conditions for early repayment (some banks add 1–2 % penalty)
- Mandatory insurance — sometimes the bank ties the rate to a life insurance policy at the same bank (always more expensive than a separate policy)
- Account fees — even 200 CZK/month is 60,000 CZK over 25 years
- Fixation end procedure — some banks automatically extend at a worse rate if you don't react
Step 5: Plan for the end of fixation
About 6 months before fixation ends, the bank sends you a new rate offer — this is the only moment you can refinance without penalty. Compare with offers from other banks. If a competitor is at least 0.3 % cheaper, refinancing pays off.
Don't passively accept the bank's automatic extension. The bank knows most clients are lazy and offers worse rates than what's on the open market.
FAQ
How much down payment do I need?
Minimum 20 % of property value (LTV 80 %). For under-36s, 10 % is enough (LTV 90 %). The more you put down, the better the rate — and the lower the risk for both parties.
Should I take the longest possible mortgage term?
It depends. A 30-year term gives a lower monthly payment, but you pay much more interest in total. A 20-year term is a sensible balance for most. Use our calculator to see the difference.
How long does mortgage approval take?
Typically 2–6 weeks from application to signing. Pre-approval is faster (a few days), but the actual approval depends on property valuation and document verification.