A recurring extra payment or a one-off lump sum both go straight against principal, so every euro overpaid stops accruing interest for the rest of the term. This calculator runs your actual repayment schedule month by month, with and without the overpayment, and shows the real interest saved and time shaved off.
Frequently asked
Does my lender let me overpay for free?
Most Irish variable-rate mortgages allow overpayments with no penalty, but many fixed-rate deals cap penalty-free overpayments (commonly around 10% of the balance a year) or charge a breakage fee above that. Check your own mortgage terms before overpaying — this calculator assumes the whole overpayment is applied penalty-free.
Try it with your own numbers. Free, runs entirely in your browser — nothing you enter is sent anywhere.
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