Northern Ireland mortgage calculator
Estimate your monthly mortgage payment for a home in Northern Ireland, United Kingdom. Adjust the home price, deposit, rate, and term below for an instant breakdown.
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Northern Ireland mortgage inputs
Enter your gross monthly income above to see an affordability read (based on the standard 28% front-end DTI guideline).
Loan amount: £256,000
Default rate (5.2%, 2-year fixed (reverts to lender SVR after)) is an indicative United Kingdom figure — rates vary widely by lender and product, so edit it to match your own quote.
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Frequently asked questions
How is my monthly mortgage payment calculated?
Your total monthly payment is principal and interest (calculated with the standard fixed-rate amortization formula) plus 1/12 of your annual council tax, 1/12 of your annual home insurance, and any monthly HOA/strata/service charge. Adjust any of the inputs above to see how each one changes your total.
What deposit do I actually need?
There’s no legal minimum, but most lenders want at least 5–10%, and rates improve noticeably at 25%+ (75% LTV or lower). A smaller deposit means a larger loan and a higher monthly payment, which you can see directly by changing the deposit field above.
What does the affordability verdict mean?
It uses the standard 28/36 front-end debt-to-income guideline that most lenders reference: a payment at or under 28% of your gross monthly income is considered comfortable, 28–36% is a stretch worth budgeting carefully for, and over 36% is tight by most lenders’ standards. Enter your gross monthly income to see your own number.
Is council tax the same everywhere in Northern Ireland?
No — Council Tax is set by your local council/authority and varies significantly by area and property band. The amount above is a rough starting point; check your local council's published rates and adjust the field to match.
Does this calculator store or send my information anywhere?
No. Every number you enter is calculated directly in your browser — nothing is saved, logged, or sent to a server. There’s no account, no email required, and no lead form.