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Mortgage Calculator Ireland

Estimate monthly mortgage repayments, total interest, loan-to-value, deposit position, stamp duty and an indicative borrowing limit using common Irish mortgage rules.

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How It Works

This mortgage calculator combines the two jobs Irish users usually need first: estimating monthly repayments and checking whether the loan size looks realistic against income and deposit rules. It is for planning only, not approval in principle.

1

Enter the property and deposit

Add the purchase price and your deposit or existing equity. The calculator estimates loan-to-value, deposit percentage and a stamp duty figure for residential property.

2

Set the loan, rate and term

Monthly repayments are calculated using the standard capital-and-interest amortisation formula. A longer term lowers the monthly payment but usually increases total interest.

3

Check borrowing power

For first-time buyers the income guide uses 4 times gross income; for home movers it uses 3.5 times. LTV limits use 90% for principal homes and 70% for buy-to-let planning.

4

Stress-test the payment

The +2% repayment estimate shows how sensitive the mortgage could be if rates rise or if a fixed rate ends and a higher rate applies later.

Sources, Assumptions and Disclaimer

Last updated: 11 August 2026

This mortgage calculator is for guidance only and does not represent approval in principle, a loan offer or financial advice. Mortgage approval is subject to lender criteria, affordability checks, credit assessment, valuation, terms and conditions. If you do not keep up repayments you may lose your home. Your interest rate and repayments may increase, and fixed-rate loans may carry early repayment charges.

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