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Komerční banka • CZK
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Our review
Petr Dvořák · Updated: 7 September 2026
Komerční banka's mortgage at a glance
The mortgage from Komerční banka is a standard home-financing product aimed at applicants who need a high proportion of borrowed funds to buy, renovate, or refinance a property. The bank finances up to 100% of the property price, so the product can also interest clients with minimal savings of their own – at the cost of stricter conditions for reaching the lowest advertised rate, which we describe below.
On the Czech mortgage market, the headline interest rate on a billboard or a bank's website almost never tells the whole story – what matters is the combination of the rate, the APRC, fees, and the conditions under which the lowest rate is actually achievable. That is exactly the case with this product, so this review covers not only the numbers themselves but also what an applicant must fulfil to actually get them.
Interest rate and APRC
Komerční banka advertises an interest rate of from 5.29% p.a., corresponding to an APRC of 5.44%. The word from matters here – this is the lowest rate the bank actually offers only to applicants who arrange all the conditional products described further below. Without them, the bank may offer a higher rate than the one advertised.
The difference between the nominal rate and the APRC matters for decision-making: besides interest, the APRC also includes the loan origination fee and other costs tied to drawing the loan, so it is always somewhat higher than the nominal rate alone. The APRC is the figure worth using to compare offers between banks, since it reflects the total cost of the loan, not just its nominal interest. For this product, the gap between 5.29% and 5.44% is fairly small, which suggests the CZK 4,900 origination fee (see below) is not particularly high relative to the loan amount.
What the mortgage actually costs
The bank publishes a legally required representative example: a loan of CZK 4,000,000 over a term of 30 years, with a rate fixed for 3 years, at a rate of 5.29% p.a. and an APRC of 5.44%. Over the full repayment period, the client would repay the bank a total of CZK 7,993,634.18 – roughly double the borrowed principal.
It's worth stressing that this is a model example under specific, legally prescribed input assumptions, not a guarantee that every applicant will get exactly this rate and this total repayment amount. The actual terms depend on the applicant's creditworthiness, the value and type of the property, the loan's purpose, and whether the applicant arranges the additional products described below. The CZK 4,000,000 figure in the example is therefore a model loan amount used to calculate the APRC, not a minimum or maximum limit the bank would actually lend.
It's also worth noting that the fixed-rate period in the representative example is only three years, while the loan's term is thirty years. In practice this means that once three years have passed, the rate resets to whatever the bank is offering at the time of refixing – for a thirty-year mortgage this is a risk that needs to be factored into long-term household budgeting, since the installment after refixing could end up either higher or lower than the initial one. Anyone planning a mortgage for the full 30 years should keep in mind that the currently quoted rate is only guaranteed for the first 36 months of repayment.
Conditions and requirements
The maximum repayment term is 30 years (360 months). The bank finances up to 100% of the property price, which makes it one of the more generous offers on the market in terms of maximum LTV – many competing banks require at least a minimum down payment, whereas here the property alone can theoretically serve as the sole collateral. The fee for loan origination and risk assessment is CZK 4,900; loan servicing and drawdown are free of charge according to the bank's description, which is a common but not universal standard for mortgages.
According to the bank, the loan can be used for buying a property, renovation, refinancing an existing mortgage, settling co-ownership, or buying a cooperative flat, including related housing costs of up to 30% of the loan amount – a fairly broad range of purposes, not just a straightforward home purchase. This will suit, for example, applicants who also need funds for furnishing a home or minor building work related to moving in.
According to the bank, the process runs in three steps. The first is an initial consultation at a branch, where the application's parameters and the client's needs are discussed. Next comes the actual mortgage approval, during which the bank assesses the applicant's creditworthiness, risk, and income level – this is also when it verifies whether the applicant meets the conditions for the lowest advertised rate. The final step is signing the contractual documentation, which includes the European Standardised Information Sheet (ESIS), the mortgage agreement itself, and the application to register the mortgage lien in the land register, which completes the collateralisation of the loan by the property.
Add-on products for a lower rate
Komerční banka ties its lowest advertised rate of 5.29% p.a. to arranging several additional products and meeting extra conditions: life insurance and property insurance taken out with Komerční pojišťovna, directing the applicant's income to an account held with Komerční banka, and providing an energy performance certificate (PENB) of class A or B for the property.
This last condition is fairly unusual and in practice means that only applicants buying or building energy-efficient properties are likely to reach the advertised lowest rate. For older houses and flats with a weaker energy label, the realistically achievable rate is likely to be higher than the headline figure – something to keep in mind when budgeting based on the numbers in this overview.
Taking out life and property insurance with the bank's own insurer is common practice for mortgages on the Czech market – from the client's point of view, it's a trade-off between a lower interest rate and less freedom to choose an insurer. Anyone who wants to arrange insurance elsewhere, or not at all, should expect the bank to offer a rate closer to the upper end of its range rather than the quoted 5.29% p.a.
Who this mortgage suits
The product suits, above all, applicants with limited savings of their own who will appreciate the option of financing up to 100% of the property price. It is also most advantageous for those willing to arrange additional life and property insurance with Komerční pojišťovna and redirect their income to an account held with KB in exchange for a lower rate.
Given the condition on an energy label of class A or B, the offer is most advantageous for buyers of new-build properties or homes that have undergone a thorough energy renovation; for older properties without such a label, borrowers should expect a higher effective rate than the one the bank quotes as its starting point. Conversely, applicants who want maximum freedom in choosing their insurer and don't want to move their income to a single bank may be better off comparing offers from banks that don't tie their lower rate to such strict conditions.
What to check before signing
Since the advertised rate of 5.29% p.a. is conditional on meeting several requirements at once, applicants are advised to ask the bank for a written quote tailored to their specific situation before signing – including the actual cost of life and property insurance with Komerční pojišťovna – so they can judge whether the combination of a lower interest rate and mandatory insurance genuinely works out cheaper overall than another bank's offer without these conditions. It's equally worth confirming whether the specific property actually meets the required energy performance class of A or B, since without a PENB in this class the advertised rate of 5.29% p.a. is not realistically achievable.
It's also worth noting that this overview is based on the bank's representative example and published information; the actual offer made to a specific applicant may differ in detail depending on current market conditions and Komerční banka's individual risk assessment.
Summary
Komerční banka's mortgage offers solid headline terms at first glance – a rate from 5.29% p.a. (APRC 5.44%), financing up to 100% LTV, and a relatively low loan origination fee of CZK 4,900. The key point, however, is not to mistake the advertised rate from for a guaranteed offer for every applicant: reaching it requires meeting a fairly demanding combination of conditions – insurance with Komerční pojišťovna, redirecting income to a KB account, and an energy label of class A or B for the property.
Applicants who can meet these conditions get a competitive offer with a high maximum LTV and a low upfront fee. Those who don't want to or can't meet them – typically because of an older, less energy-efficient property – should expect a higher rate than the one the bank quotes as its lowest offer, and should have a specific individual quote calculated before signing the contract.
✓ Pros
- ✓ Financing up to 100% of the property price (LTV) – suitable even without personal savings
- ✓ Low loan origination and risk-assessment fee (CZK 4,900)
- ✓ Free loan servicing and drawdown
- ✓ Competitive rate from 5.29% p.a. (APRC 5.44%) when conditions are met
- ✓ Broad range of eligible purposes – purchase, renovation, refinancing, and cooperative flats
✕ Cons
- ✕ The lowest rate is only a starting "from" figure – it requires arranging life and property insurance with Komerční pojišťovna
- ✕ The lower rate also requires directing income to a KB account and an energy label of class A or B for the property
- ✕ The fixed-rate period in the representative example is only 3 years on a 30-year mortgage – a risk of rate changes after refixing
- ✕ The total repaid amount in the example (nearly CZK 8 million on a CZK 4 million loan) shows the high impact of the long repayment term
- ✕ Older properties without an A/B energy label are unlikely to reach the advertised rate
Loan repayment calculator
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Indicative calculation based on nominal rate of 5.29%. Actual costs depend on individual creditworthiness assessment.
Representative example
For a loan of 50 000 CZK over 48 months, at a nominal rate of 5,29% (APRC — check the bank's current offer), the monthly instalment is approximately 1 158 CZK, and the estimated total amount payable is approximately 55 586 CZK (including interest: approx. 5 586 CZK). This estimate excludes any arrangement fee, insurance, or other charges — check the bank's offer for the full terms and total cost of credit before signing. As of 20.09.2026.