What is compound interest?

Compound interest is the interest calculated on the initial principal and also on the accumulated interest from previous periods. For example, if you invest €100 at 5% annual interest, after one year you'll have €105. In the second year, you earn interest on €105, not just the original €100, resulting in €5.25 in interest (€0.25 comes from 5% of €5).

How does this tool work?

This calculator allows you to enter your initial investment, the monthly contribution you plan to make, the annual interest rate, the frequency of interest compounding, and the number of years of the investment. Based on this data, it calculates the total accumulated amount and presents you with an interactive graph and a detailed table of annual values.

Mortgage Payment Calculator (in Euros)

Calculate your monthly mortgage payment, the total cost of the loan including interest, and see - month by month - how much you pay in interest and principal.

Mortgage Loan Calculator

Loan Conditions

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Results

Average monthly payment

€

APR (Annual Percentage Rate)

Indicator that reflects the overall cost of the loan, including interest, fees, insurance, and taxes.

€

Total interest

Total amount paid in interest over the entire loan term.

€

Other costs

Sum of all additional charges besides interest, such as bank fees, mandatory insurance, and taxes.

€

Total loan cost

Total cost of the credit borne by the consumer, excluding the borrowed capital.

€

Total Amount Payable (TAP)

Total amount payable by the consumer. This is the total value paid for the loan, including capital and all associated charges.

€

Se pedires um empréstimo de X€, por Y anos, com uma taxa de juro de K%, incluindo seguros, comissões e impostos, terás uma prestação MÉDIA mensal de W€. Disclaimer, alterado com custom code

Graph

Table

The results shown are simulations and do not constitute financial advice.

Glossary

What is the difference between NIR and APR?

The NIR only reflects the interest charged by the bank, while the APR includes interest and all mandatory loan costs, such as fees, insurance, and taxes. The APR reflects the real cost of the loan and is the best reference for comparing offers. For more details, you can consult our dedicated article on the differences between NIR and APR.

How does this mortgage calculator work?

This calculator estimates the monthly payment and total mortgage cost based on the values entered (loan amount, term, interest rate, fees, and insurance). Results are indicative and non-binding.

How is a mortgage payment calculated?

To calculate a mortgage payment, banks consider:
‍

Loan amount
Term
Interest rate
Type of rate (fixed, variable, or mixed)

The payment results from a financial formula that spreads capital and interest over the loan term. Our mortgage payment simulator automates this calculation, allowing you to quickly understand how much you will pay per month.

What affects your monthly mortgage payment?

Monthly payments may vary depending on:
‍

Loan amount – the higher the loan, the higher the payment
Loan term – longer terms reduce the payment but increase total interest
Interest rate – small differences can have a big impact
Euribor – for variable-rate loans
Mandatory insurance – life and home insurance

The simulator allows you to test different scenarios to assess the impact of each factor.

Monthly payment vs total loan cost: which matters more?

When using a mortgage calculator, it’s common to focus only on the monthly payment. However, a lower payment may mean:
‍

A longer loan term
More interest paid over time

That’s why it’s important to consider both the monthly payment and the total loan cost, ideally using the APR.

Are the results final?

No. Results are for reference only. Final conditions depend on credit risk analysis, borrower profile, and each bank’s formal offer.

Why can mortgage payments change over time?

With variable-rate mortgages, payments change according to Euribor fluctuations. With mixed-rate mortgages, payments change after the initial fixed-rate period ends.

Does the calculator include stamp duty?

No. Stamp duty depends on the loan amount and term and is calculated separately by the bank.

Can I use this calculator to compare offers from different banks?

Yes. It’s a useful tool to understand general costs, but final comparisons should be based on official bank proposals.

Does this calculator replace a mortgage broker or credit intermediary?

No. A credit intermediary can negotiate conditions, present multiple offers, and assist with paperwork - usually at no cost to the borrower.

Can I change my mortgage in the future?

Yes. You can renegotiate terms, transfer the mortgage to another bank, or make early repayments.

What factors influence mortgage approval?

Income, job stability, debt-to-income ratio, credit history, and down payment amount.

Disclaimer

This mortgage calculator is for informational purposes only and does not replace official bank proposals or professional credit advice.