See how much you save — and how many years you cut — by overpaying your mortgage each month. Even €100/month can save tens of thousands.
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Overpay AND Reduce Bills
Improving your BER rating can save €1,000–€1,600/year in energy costs — money you could redirect to mortgage overpayments. A heat pump + insulation upgrade could effectively pay off your mortgage years faster.
An extra €100 per month on a €300,000 mortgage at 3.5% over 30 years saves you approximately €32,000 in interest and cuts nearly five years off the term. That's one of the best guaranteed returns you can get — your savings grow at whatever your mortgage rate is, with zero risk. But overpaying isn't always the smartest move.
How Overpayments Work
Every euro you overpay goes directly off the principal balance. Because interest is calculated on the outstanding balance, a smaller principal means less interest each month. The effect compounds over time — small regular overpayments in the early years have a disproportionate impact because that's when the interest portion of your repayment is highest.
Check Your Lender's Terms First
Most Irish lenders allow overpayments on variable rates without penalty. On fixed rates, many impose a cap — typically 10% of the outstanding balance per year — above which a breakage fee applies. Some lenders (like Avant Money and Finance Ireland) allow unlimited overpayments on fixed rates. Check your mortgage terms or call your lender before starting, because a breakage fee can wipe out years of benefit.
When Not to Overpay
Don't overpay until you have an emergency fund of 3–6 months' expenses. If you have higher-interest debt — personal loans, credit cards — clear those first. And consider pension contributions: if you're a higher-rate taxpayer, pension contributions get 40% tax relief, which may deliver a better after-tax return than clearing a 3.5% mortgage. The right answer depends on your full financial picture, not just your mortgage.