Mortgage stress test explained: what does it mean in Ireland?
A mortgage stress test asks whether the payment remains manageable if the interest rate used for affordability is higher than the initial rate.
Page checked: 21 October 2026
Why lenders test higher rates
Mortgage affordability is not just about whether you can make today's payment. Lenders may assess how the household would cope with changes in interest rates and other financial commitments under their own credit policies.
A simple illustration
If a mortgage payment is calculated at 3.53%, testing the same balance at 4.53% and 5.53% shows how sensitive the payment is to higher rates. These are scenario illustrations, not a statement of any lender's exact underwriting test.
The Check The Damage calculator can compare the selected rate with +1% and +2% scenarios.
Sources & assumptions
Central Bank mortgage-measure limits and Revenue stamp-duty rules can change. Check the official sources before relying on an estimate.
Central Bank mortgage measures · Central Bank retail interest rates