Calculate interest and payments on your loans

Our interest and payment calculators give you insight into the real cost of your loans. Calculate interest, APR, see how much of your monthly payment goes to interest vs. principal, and find the best repayment strategy for your situation.

Understanding interest and interest types

In Denmark, you can choose between fixed and variable interest rates on your loan. Fixed rate provides security as the payment stays the same throughout the loan term. Variable rate follows the market and can both rise and fall. Use our free interest calculator to calculate interest on loans, deposits and investments.

APR - the real loan costs

APR (annual percentage rate) is the most important figure to compare when looking for the cheapest loan. APR includes not just interest but also fees, origination costs and other expenses. Our calculator helps you calculate APR for different loan types.

Repayment strategies - annuity vs. serial

With annuity loans, the total payment is fixed, but the split between interest and principal changes over time. Initially, the interest portion is large but gradually decreases. With serial loans, the principal repayment is fixed but the payment decreases as interest decreases. Our calculator shows exactly how much goes to interest and principal each quarter.

Debt consolidation

If you have multiple loans at different interest rates, it may pay off to consolidate them into one loan at a lower rate. Our calculators help you calculate the savings from consolidating your debt.

Frequently Asked Questions

What is the difference between fixed and variable interest rates?

Fixed interest is locked for the entire loan term, providing a consistent monthly payment and predictability. Variable interest (e.g. F1, F3, F5) adjusts periodically according to market rates and can both rise and fall. Variable rates are typically lower initially but carry the risk of increasing payments.

How do I calculate how much of my payment is interest?

The interest portion is calculated by multiplying the remaining debt by the annual interest rate and dividing by the number of terms per year. For a loan with 1 million DKK remaining and 4% annual interest, you pay approximately 3,333 DKK in interest per quarter (1,000,000 x 0.04 / 4). Our calculator shows the precise breakdown for each quarter.

Is it worth refinancing my loan?

Refinancing can be worthwhile if the interest rate difference is large enough to cover the costs of refinancing. As a rule of thumb, the rate reduction should be at least 0.5-1 percentage points. Refinancing costs include brokerage, registration fees and any interest rate differences. Our calculator helps you determine whether refinancing is beneficial.

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