Continue your plan
Useful next calculations
When to use this calculator
- Before comparing mortgage products, brokers or repayment types.
- When you want to test how a different deposit, rate or term changes the payment.
- When you need a quick estimate before using a formal illustration or agreement in principle.
- When you are stress-testing your budget against a higher rate.
A realistic Ireland planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
| Input | Value |
|---|---|
| Annual Income (€) | €45,000 |
| Monthly Expenses (€) | 6 |
| Monthly Safety Buffer (€) | 6 |
| Interest Rate (%) | 5% |
After entering these figures, review payment-supported loan and mortgage payment budget together rather than in isolation. Then rerun the tool with one input adjusted.
How to read your results
Payment-Supported Loan
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
Mortgage Payment Budget
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
Method & assumptionsAuthoritative sources
This planning calculator converts the monthly payment left after the spending and safety buffer you enter into a loan amount at the selected rate and term. It does not use a lender income multiple and does not replicate underwriting. The output is a payment-supported ceiling based solely on your assumptions, not an amount a lender has assessed as affordable.
Real lenders review income, debts, dependants, regular spending, credit history, loan-to-value and the effect of future rate rises under their own policies. Include all ongoing commitments and keep a realistic buffer rather than allocating every spare pound to a mortgage. Obtain a decision in principle from a regulated lender or mortgage adviser before relying on a borrowing figure.
Common mistakes
- !Mixing up loan amount and property value, which distorts affordability and LTV.
- !Using a headline rate but forgetting fees, insurance or repayment type.
- !Testing only one term length instead of comparing payment and total cost together.
- !Treating the result as a lender decision rather than a planning estimate.
What to do next
- Run a second scenario with a cautious assumption so you can see the downside clearly.
- Compare the result with the related calculators below before making a decision.
- Check current local rules, eligibility and provider terms before applying or committing money.
- Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.
Frequently asked
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