Mortgage Calculator.

Work out your monthly repayment for any loan amount, term, and rate. Supports annuity, linear, and interest-only mortgages.

✓ Free 🌍 International

Mortgage Calculator

Work out your monthly repayment.

Property price

€

Deposit

€

—

Typically 10–20% of the property price.

Mortgage term

30 yr

5 yr35 yr

Interest rate

Country / Currency

Repayment type

Annuity Fixed monthly payment. Interest share falls over time. Linear Fixed capital repayment. Payments decrease each month.

Interest only — pay interest each month, repay capital at end of term

Enter your details above to calculate your repayment.

Monthly repayment

— / month

Loan amountProperty price minus deposit

—

Total interestOver the full term

—

Total repaidLoan + all interest

—

Capital Interest —%

—

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Compare mortgage types Side-by-side figures based on your inputs

Annuity

Linear

Interest only

Monthly payment

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Total interest paid

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Total out of pocket

—

What your money actually pays for

Annuity—

Linear—

Interest only—

Capital repaid

Interest paid

Balloon repayment

Helpful tips

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Annuity vs linear

Annuity gives predictable fixed payments. Linear costs less in total interest and shrinks every month, but the early years are more expensive.

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A bigger deposit saves more than you think

Every extra percent you put down reduces your loan-to-value ratio, which typically unlocks a lower interest rate, not just a smaller loan.

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Overpayments make a big difference

Many lenders allow penalty-free overpayments of 10% per year. Even small regular overpayments can shave years off your term.

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This is an estimate, not an offer

Actual rates depend on your credit profile, lender, and LTV. Use this to understand your options, then speak to a mortgage advisor.

How mortgages work

The short version, for people
who just want the number

A mortgage is a loan secured against a property. You borrow the difference between the purchase price and your deposit, then repay it (plus interest) over a set term. Most mortgages run between 10 and 30 years. The longer the term, the lower the monthly payment, but the more you pay in total interest.

The interest rate is the annual cost of borrowing, expressed as a percentage of the outstanding balance. It compounds monthly, which means a small difference in rate has an outsized effect over a 25-year term. Reducing your rate by 0.5% on a €300,000 loan can save tens of thousands over the life of the mortgage.

There are three common repayment structures. Annuity gives you a fixed monthly payment throughout. Early payments are mostly interest, later ones mostly capital. Linear repays capital at a fixed rate each month, so payments start higher but fall steadily. Interest only keeps monthly costs lowest, but the original loan remains unpaid and must be settled at the end of the term.

Annuity M = P × r(1+r)ⁿ ÷ [(1+r)ⁿ − 1]

Linear M = P/n + (P − paid) × r

Interest only M = P × r

FAQ

Common questions

With an annuity mortgage, your monthly payment stays the same for the entire term. In the early years most of it goes to interest; over time more goes to capital. It's predictable and easy to budget for. With a linear mortgage, you repay a fixed slice of capital every month, so the interest portion falls steadily and total payments decrease. Linear costs less in total interest, but the first few years are more expensive, which can affect affordability at the start.

Interest-only keeps monthly costs low, which can make sense in specific situations: buy-to-let investors with rental income covering the payments, or buyers who plan to sell before the term ends. The catch is that the original loan is never reduced. At the end of the term you still owe the full amount, which must be repaid in one lump sum. Without a clear repayment plan for that balloon payment, interest-only carries significant risk. It also costs considerably more in total interest than a repayment mortgage.

A larger deposit reduces your loan-to-value ratio (LTV), which typically unlocks a lower interest rate, not just a smaller loan. Lenders price risk based on LTV, so crossing thresholds like 90%, 80%, or 75% can meaningfully reduce your rate. Even a small increase in deposit can save more over the full term than the upfront cost suggests. Most lenders require a minimum of 5–10% deposit, though requirements vary by country and lender.

A longer term lowers your monthly payment, which can improve affordability, but it costs significantly more in total interest. A 30-year mortgage at 5% costs roughly twice the original loan amount in total repayments. Extending from 25 to 30 years on a €300,000 loan at 4% adds around €30,000–40,000 in total interest. The monthly saving is real, but the long-term cost is high. Many lenders allow penalty-free overpayments of around 10% per year, which can shorten the effective term considerably.

LTV stands for Loan-to-Value. It is the size of your mortgage as a percentage of the property value. If you buy a €300,000 home with a €60,000 deposit, your loan is €240,000 and your LTV is 80%. Lenders use LTV to price risk. The higher the LTV, the higher the rate they charge. Falling below key thresholds (90%, 80%, 75%, 60%) typically qualifies you for progressively better rates. As you repay your mortgage and property values rise, your LTV falls, which can make remortgaging at a better rate worthwhile.

The calculator uses standard annuity, linear, and interest-only formulas and gives an accurate figure for the inputs provided. What it cannot account for: arrangement fees, valuation costs, insurance requirements, rate changes on variable or tracker mortgages, and lender-specific conditions. The result is a reliable estimate for planning purposes. For a binding offer, speak to a mortgage advisor or broker who can factor in your full financial profile and current lender rates.