My Irish Mortgage Tool is a free, independent Irish mortgage calculator and home buying guide built for Irish first-time buyers, second-time buyers and those selling and buying simultaneously. It requires no sign-up, collects no personal data, and runs entirely in the browser.
Features include: a mortgage repayment calculator using Irish lender rates; an affordability checker based on the Central Bank of Ireland 3.5 times income lending rule and LTI exemptions; an Irish stamp duty calculator with current residential rates; a Help to Buy scheme calculator; a First Home Scheme guide; a mortgage stress test showing payment sensitivity to rate rises; an overpayment simulator showing interest and term savings; a side-by-side mortgage deal comparison tool including fees and cashback; a rent versus buy 5-year analysis; a mortgage break-even calculator; and a personalised step-by-step Irish home buying journey covering Approval in Principle, solicitors, independent surveyors, estate agents, contracts, loan offer, drawdown and closing.
This tool is particularly useful for Irish first-time buyers navigating the Help to Buy scheme, the First Home Scheme, Central Bank mortgage rules, and the Irish conveyancing process. It is free, independent of any bank, broker or estate agent, and does not store or transmit any user data.
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Mortgage Calculator
Enter your loan amount, term, interest rate and fixed period to see your monthly repayments, total interest and a full year-by-year breakdown. Adjust the sliders to explore different scenarios.
Monthly Repayment
€1,680
Principal + Interest
Total Interest
€103,294
34.4% of loan
Total Cost of Credit
€403,294
Over full term
Fixed Period Cost
€41,549
Net of cashback
Balance Milestones
Remaining principal at key points
Annual Summary
Year-by-year
Payment Composition
Principal vs Interest per year
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Overpayment Simulator
See how much time and interest you could save by paying a little extra each month. Enter your extra monthly amount and the year you'd like to start — the tool shows your new payoff date and total savings.
Standard Monthly
—
No overpayment
With Overpayment
—
New total monthly
Standard Interest
—
No overpayment
With Overpayment
—
Reduced interest
Balance Comparison
Standard vs with overpayment
Balance Over Time
Visual comparison
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Mortgage Deal Comparison
Comparing quotes from different lenders? Enter up to three deals including rates, cashback and fees. The tool calculates the true net cost of each and highlights the best overall value — not just the lowest rate.
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Affordability, Stamp Duty & Rent vs Buy
Enter your income and deposit to see your maximum borrowing under Central Bank rules, your LTV ratio and which rate band you fall into. Also calculates Irish stamp duty and compares the 5-year cost of buying vs renting.
Maximum Borrowing (3.5× income)
€262,500
Max property price: €312,500 with your deposit
3.5× Income
€262,500
Standard limit
4× Income
€300,000
With exceptions
Affordable Monthly
—
At 35% of net income
Loan-to-Value (LTV)
Based on property price vs loan amount
—
LTV Ratio
Loan — / Property —
Deposit covers — of purchase price
0%60%80%90%100%
≤60%
Excellent
Best rates available from most Irish lenders
61–80%
Good
Strong position, competitive rates on offer
81–90%
Standard
Typical FTB range — standard rates apply
>90%
High Risk
Above Central Bank max — deposit may be insufficient
Stamp Duty Calculation
Ireland rates
Total Stamp Duty—
Total Buying Cost
—
Incl. legal, survey est.
Rent vs Buy
5-year analysis
| Scenario | 5yr Cost | 5yr Equity | Net Position |
|---|
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Interest Rate Stress Test
Rates can rise. This tab shows what your monthly repayment would be at every rate increment up to +10% from today. Set your maximum affordable monthly payment and it'll show you exactly how much headroom you have.
Current Monthly
—
At base rate
Rate Buffer
—
Rise before limit hit
Rate Sensitivity
Monthly payment at different rates
| Rate | Monthly Payment | vs. Current | Annual Cost | Affordable? |
|---|
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Mortgage Insights & Break-Even
In the early years of a mortgage, most of your payment goes to interest — not your actual debt. This tab shows the exact year your balance tips in your favour, when you start building equity faster than paying interest.
Break-Even Point
The year your monthly principal repayment exceeds the interest charge — your mortgage tips in your favour
Break-Even Detail
Monthly interest vs principal over life of loan