Mortgage Calculator Ireland
Calculate Irish mortgage repayments from a loan amount, rate and term, then compare total interest, overpayments, rate changes and switching scenarios.
Start with the amount you want to borrow, then enter the rate and remaining term.
Mortgage Details
Property & Deposit
Loan Terms
Mortgage Repayment Estimate
Enter a mortgage amount, interest rate and term to estimate monthly repayments, total interest, overpayments and rate-change scenarios.
How this mortgage repayment estimate is calculated
The calculator estimates repayment mortgage costs from the loan amount, interest rate, mortgage term, and any optional overpayments.
Published by Irish Calculators. Rates, rules and assumptions are maintained against the official sources linked below.
- Mortgage-amount mode uses the balance entered directly. Property-planning mode derives it from the property price minus the deposit.
- The selected interest rate and term are used to calculate an estimated monthly repayment.
- Total repayable and total interest are estimated over the full term.
- Optional overpayments and alternative rates are modelled separately to show possible interest, term and repayment differences.
Source note: Standard repayment mortgage formula, CCPC repayment and overpayment guidance, and Central Bank mortgage-switching guidance. This is an estimate only and not financial advice.
About This Mortgage Calculator Ireland
This mortgage calculator Ireland estimates monthly repayments, total interest, repayment schedules, overpayments and rate-change scenarios from the amount borrowed, interest rate and term.
Choose Mortgage amount when you already know how much you want to borrow or your current outstanding balance. Choose Property price & deposit when you want the calculator to derive the mortgage and also show LTV, estimated Stamp Duty and upfront purchase figures.
The Loan-to-Value (LTV) ratio is the mortgage amount expressed as a percentage of the property value. For principal home mortgages, first-time buyers and second/subsequent buyers generally work around a 90 % maximum LTV, while buy-to-let purchases generally use a lower LTV limit.
The results are estimates only. Actual mortgage approval, repayments, rates, fees, and conditions depend on your lender, income, expenses, credit profile, mortgage type, and current Central Bank and lender rules.
Popular mortgage repayment examples
Quick examples using one consistent assumption: a 30-year repayment mortgage at 4.00%. Each link opens mortgage-amount mode with that balance prefilled.
How This Calculator Works
Who This Calculator Is For
Frequently Asked Questions
How do I calculate mortgage repayments in Ireland?
What affects monthly mortgage repayments?
What are repayments on a €300,000 mortgage in Ireland?
Can extra repayments reduce my mortgage term?
Can I use this as a mortgage switching calculator?
Should I enter the property price or mortgage amount?
Does this mortgage calculator include mortgage protection or home insurance?
Is this the same as a mortgage affordability calculator?
Example Monthly Mortgage Repayments
Many users search for repayments on a 200k, 300k, or 400k mortgage. The examples below show how monthly mortgage repayments can change by loan amount when the interest rate and term stay the same.
These examples assume a 30-year repayment mortgage at 4.00% interest. They are for illustration only, because your real repayment will depend on the rate, term, mortgage type, and lender offer available to you.
| Mortgage amount | Example monthly repayment | Total repayable | Total interest |
|---|---|---|---|
| €200,000 | €955 | €343,739 | €143,739 |
| €300,000 | €1,432 | €515,609 | €215,609 |
| €400,000 | €1,910 | €687,478 | €287,478 |
| €500,000 | €2,387 | €859,348 | €359,348 |
Use mortgage-amount mode above to replace these examples with your own balance, rate and term.
How Mortgage Repayments Are Calculated
A mortgage repayment calculator uses the loan amount, interest rate, and term to estimate the regular payment needed to repay both capital and interest over time.
For a standard repayment mortgage, each monthly payment includes interest on the outstanding balance and a capital repayment that reduces the loan. Early in the term, more of the payment goes towards interest. Later in the term, more goes towards reducing the balance.
A longer mortgage term usually lowers the monthly repayment, but it can increase the total interest paid over the full mortgage. A shorter term usually increases the monthly repayment, but can reduce the total interest cost.
Interest rate changes can have a large effect on repayments. That is why the result panel includes a rate comparison and a simple stress-test view, helping you see how the payment could move if rates increased.
Extra Repayments and Overpayments
If your lender allows overpayments, paying a little extra each month or making a lump-sum repayment can reduce the total interest and shorten the mortgage term.
| Example overpayment | Estimated time saved | Estimated interest saved |
|---|---|---|
| €100 extra per month | 3 years 6 months | €28,747 |
| €200 extra per month | 6 years 2 months | €50,412 |
| €10,000 lump sum | 1 year 10 months | €21,972 |
| €100 monthly + €10,000 lump sum | 5 years | €46,716 |
Example based on a €300,000 mortgage over 30 years at 4.00%. Fixed-rate mortgages may have overpayment limits or break fees, so always check your lender terms first.
How to Compare a Mortgage Switching Rate
A useful switching comparison keeps the outstanding balance and remaining term the same, then changes the interest rate. That isolates the repayment effect of the rate before fees and incentives.
| Comparison item | Use in calculator | Check separately |
|---|---|---|
| Outstanding balance | Enter as the mortgage amount | Confirm with current lender statement |
| Remaining term | Enter the years still left | Do not extend it silently just to lower the payment |
| Current and alternative rate | Use the rate comparison | Confirm fixed period and APRC |
| Switching costs | Not included | Legal, valuation, break fee, insurance and cashback terms |
A lower repayment does not automatically mean a lower total cost. Central Bank and CCPC guidance recommends comparing the overall mortgage cost and the conditions attached to incentives.
Mortgage Costs Beyond the Monthly Repayment
The monthly repayment is only one part of buying a home in Ireland. Your budget should also include deposit, stamp duty, legal costs, valuation fees, survey costs, insurance, and moving costs.
| Cost type | What it means | Included in this calculator? |
|---|---|---|
| Deposit | Your upfront contribution towards the property price. | Yes |
| Stamp duty | Tax paid on the property purchase. | Estimated |
| Legal fees | Solicitor/conveyancing costs. | No |
| Valuation or survey | Property checks requested by lender or buyer. | No |
| Insurance | Mortgage protection, home insurance, or related cover. | No |
Use the Stamp Duty Calculator, Help to Buy Calculator, and First Home Scheme Calculator alongside this mortgage repayment calculator to build a fuller Irish home-buying budget.