Irish money
Mortgage calculator
Monthly payment, interest, and a check against the Central Bank limits.
How to use it
- Enter the price and the deposit, or the loan amount on its own.
- Enter the rate and the term. Choose capital and interest, or interest only.
- Add an introductory rate and a follow-on rate if the deal changes, and an overpayment if you want the saving.
- Choose the buyer type. Add income if you want the loan checked against the Central Bank income limit.
Monthly compounding
The monthly rate is the annual rate divided by 12. That is the nominal monthly method used when a mortgage rate is quoted. The repayment is the amount which, paid every month, brings the balance to zero at the end of the term. Interest only covers the interest and leaves the capital owing.
€300,000 over 30 years at 4% is €1,432.25 a month if that rate ran the whole way. These figures are estimates. They are not a mortgage offer and they are not financial advice.
The Central Bank limits, and a rate that steps up
The Central Bank of Ireland sets loan-to-income and loan-to-value limits. First-time buyers: 4 times gross income, and a deposit of at least 10% (90% loan-to-value). Second and subsequent buyers: 3.5 times income, and the same 10% deposit. Buy-to-let: a deposit of at least 30% (70% loan-to-value), with no income multiple in these measures. Lenders may put up to 15% of first-time and second-buyer lending, and 10% of buy-to-let lending, above the limits. Going over is a prompt to check, not an automatic no.
A short principal-home bridging loan can sit outside the income limit. This page does not model that product. If the rate you have is only introductory, the payment is recalculated when it ends, on the balance and the months left, at the follow-on rate. Fixed and variable rates are compared on their own page. Stamp duty is a separate bill: use the stamp duty calculator.
Questions
Where do the limits come from?
The Central Bank’s mortgage measures page, and its 8 April 2026 note that the income and loan-to-value limits themselves were unchanged when certain bridging loans were carved out. The result links both pages.
Does a higher loan-to-value make the calculator refuse?
No. It warns, and it says lenders may do some lending above the limit. Whether to lend is the lender’s decision.