Mortgage repayment on €300,000 in Ireland
See why the rate and remaining term make a major difference to your monthly payment.
Page checked: 21 October 2026
There isn't one fixed answer
A €300,000 mortgage can have very different repayments depending on the interest rate and term. Rather than presenting one number as if it were universal, use the Check The Damage calculator to test the rate and term that apply to you.
What changes the repayment?
Enter €300,000 into the Mortgage Calculator and test different rates and terms.
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Buying the property is more than the mortgage
Remember that your cash requirement can include deposit, stamp duty, legal fees and other purchase costs. Our affordability calculator estimates these so you can see a more realistic picture.
Rates shown elsewhere on the site are periodically updated published rates. This page deliberately does not assume a live rate.
€300,000 mortgage repayment comparison
At an illustrative 3.53% interest rate, the monthly capital-and-interest repayment on a €300,000 mortgage changes significantly with the term.
| Mortgage term | Indicative monthly repayment |
|---|---|
| 20 years | €1,745 |
| 25 years | €1,507 |
| 30 years | €1,352 |
| 35 years | €1,245 |
Rate context: 3.53% is the weighted average for new Irish mortgage agreements, not a quote or guaranteed offer. Source: Central Bank of Ireland retail interest-rate statistics (August 2026).
These figures are illustrations, not lender quotes. They exclude mortgage protection, home insurance, property tax, maintenance and other household costs. A different interest rate will change the payment.
How much interest does the term change?
A longer term reduces the required monthly payment but normally increases the total interest paid because the balance is outstanding for longer. A shorter term does the opposite: higher monthly repayments in exchange for less time paying interest.
Use the site's mortgage calculator to change the rate and term and compare the result with your actual budget.