Mortgage Affordability vs Repayment Calculator Ireland

The Mortgage Affordability Calculator helps you explore a possible borrowing range from information such as income, buyer type and deposit. The Mortgage Calculator starts with a loan amount you choose and estimates the payment from the rate and term.

That distinction matters. A repayment of €1,500 per month does not prove that a lender will offer the mortgage behind it. An affordability estimate of €300,000 does not prove that the payment fits comfortably beside a household’s real spending.

Suppose a household uses the affordability tool and gets an indicative mortgage range. They then choose one amount inside that range and enter it in the repayment tool with a rate and term. The second tool may show a monthly payment that feels too high once childcare, transport, bills, saving and normal spending are considered.

There is no contradiction. The first estimate is a starting boundary based on selected affordability inputs; the second expresses one borrowing scenario as a monthly and lifetime cost. The household can lower the amount, change the term or compare another rate, then discuss realistic options with a lender or adviser.

An upper planning estimate should not automatically become the target mortgage. Lenders can examine employment and income evidence, existing debts, dependants, account conduct, credit history, regular outgoings and their own policies. Buyers also need room for costs that a simple mortgage repayment does not contain.

A useful personal check is to compare the estimated payment with present rent plus the amount regularly saved each month, then account for insurance, maintenance and other ownership costs. This still does not reproduce a lender assessment, but it prevents the calculator’s highest figure from becoming the default choice.

1. Use the affordability tool to identify an initial range, not a promised loan.
2. Keep part of the deposit funds available for buying costs and a cash buffer.
3. Run several loan amounts from that range through the repayment calculator.
4. Compare the monthly result with the complete household budget.
5. Test another rate or term while changing only one input at a time.
6. Use lender or adviser assessment for the actual decision.

If you need help with the repayment inputs, read how to use the mortgage calculator. For lending-limit context, see how much can I borrow and the deposit and LTV guide.