WIBOR Rate in Poland, and why do you need to understand it before taking a mortgage

The WIBOR rate (Warsaw Interbank Offered Rate) is key in Polish banking. It affects what people and businesses pay on loans and earn on savings. Knowing about WIBOR and how to handle its changes is vital for anyone considering a loan.

1. What Is WIBOR?

WIBOR means Warsaw Interbank Offered Rate. It is the average rate at which banks in Poland lend to one another for periods ranging from 1 day to 1 year.

The rate is expressed in several variants depending on the lending term:

WIBOR 1M – one-month interbank lending rate
WIBOR 3M – three-month rate (most common for mortgages)
WIBOR 6M – six-month rate

GPW Benchmark S.A., part of the Warsaw Stock Exchange Group, calculates and disseminates WIBOR. The Financial Supervision Authority (KNF) checks the process. The rate changes each day based on bids from major Polish banks in the market where banks lend to one another.

This benchmark is used for mortgages, business loans, leases, and government bonds. It serves as the foundation of the Polish financial system.

2. How Is WIBOR Shaped and Who Decides Its Level?

No single bank sets WIBOR. Each workday at 11 a.m., major Polish banks set their internal lending rates. The highest and lowest rates are excluded. The average of the rest becomes the official WIBOR for the day.

WIBOR is mainly affected by the base rate set by the Monetary Policy Council (RPP):

• When NBP raises interest rates to fight inflation, WIBOR rises.
• When NBP cuts rates to stimulate growth, WIBOR decreases.

WIBOR not only reacts to RPP’s decisions. It also changes in response to banks’ expectations for future policy or market conditions.

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Poland is now aiming to reform WIBOR, replacing it with a new benchmark called POLSTR - a risk-free overnight rate based on real interbank deposit transactions. The official roadmap aims for a gradual introduction by 2027, with GPW Benchmark as administrator. Delays or discontinuation, as with WIRON, remain possible.

3. How Does WIBOR Affect Mortgages and Other Types of Financing?

For most Polish borrowers, WIBOR directly affects the interest on variable-rate loans. Yearly interest is calculated as:

Loan interest = WIBOR + Bank margin

If the bank’s margin is 2% and WIBOR 3M is 5%, your total loan interest is 7%. If WIBOR rises to 6%, interest climbs to 8%. Your monthly payments increase.

WIBOR affects:

• Home loans are most affected; payments change according to agreed intervals with the bank.
• Cash and car loans can use changing WIBOR or fixed rates.
• Company and investment loans also follow WIBOR. Companies borrowing in PLN pay interest linked to WIBOR. This affects business choices and profits.
• Savings on banks' deposits.

Changes in WIBOR affect both family and business budgets and the whole economy.

4. How to Minimize the WIBOR Risk When Taking a Loan

Borrowers can limit their exposure to WIBOR fluctuations through several practical strategies:

• Choose a Fixed or Semi-Fixed Interest Period - Many banks offer fixed-rate loans for 5 or 10 years. When this period ends, the bank reviews the interest. This shields you from sudden WIBOR jumps, especially in uncertain times. Even when you already have an ongoing variable-rate mortgage, you can switch to a fixed rate if you expect market conditions to worsen. We explain refinancing in more detail here.

• Compare WIBOR 3M vs. 6M or 12M - WIBOR 6M or 12M gives steady payments for a while, but delays lower payments when rates drop. WIBOR 3M or 1M reacts faster to RPP decisions.

• Maintain a Financial Cushion - Keep a savings buffer equal to 12 or more monthly loan payments. This will protect you if rates rise and lower the risk of default.

• Make steady overpayments - Pay more than your required installment. This lowers your remaining loan balance and the impact of future WIBOR rises. Most Polish banks let you overpay with little or no fees. We explain overpayments in more detail here.

Summary

WIBOR shapes loan costs in Poland. Borrowers have little influence but can limit risk by choosing fixed-rate loans, saving, and managing loans well. Knowing how WIBOR works helps people make better financial decisions.

Best regards,

Loan-brokers.pl Team

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