How much can you borrow for a mortgage in Ireland?

In Ireland the Central Bank of Ireland caps how much you can borrow for a mortgage at 4 times your gross income if you are a first-time buyer, and 3.5 times if you are a second or subsequent buyer. So €80,000 a year supports a loan of up to €320,000 for a first purchase, but €280,000 for anyone who has bought before. These are the Central Bank’s mortgage measures as of this page’s review, and they can change. A separate deposit rule then sets the price of the home you can actually buy on top of that loan.

The loan-to-income rule

The 4-times and 3.5-times figures come from the Central Bank’s loan-to-income limit, usually shortened to LTI. It works on your gross income — what you earn before tax and other deductions are taken out — not your take-home pay. For a first purchase the ceiling is four times gross income; for second and subsequent buyers it drops to 3.5 times.

For a couple applying together, lenders combine both incomes and apply the multiple to the total. Two first-time buyers earning €100,000 between them can borrow up to €400,000, because four times €100,000 is €400,000. The same principle scales up or down with whatever the two incomes add to.

The limit is a ceiling on the loan, not a promise of it. It tells you the most a lender may advance against your income under the rules — the real figure depends on the affordability assessment that comes later.

From income to price range

To turn a loan limit into a house price, you add your deposit. The Central Bank’s second measure — the loan-to-value limit, or LTV — sets a minimum deposit of 10% of the purchase price for both first-time and second or subsequent buyers. That means a lender can advance at most 90% of the price, and you must fund the remaining 10% yourself.

The two rules work together. Take the first-time buyer earning €80,000, who can borrow up to €320,000. Suppose they are buying a €350,000 home. The 10% deposit rule requires €35,000 up front, and the lender advances the remaining €315,000 — comfortably within that buyer’s €320,000 income limit. On a more expensive home the deposit rises with the price: a €500,000 home needs a €50,000 deposit, leaving a maximum loan of €450,000, which would need the income to support it.

Whichever of the two limits bites first is the one that governs. On a lower income the loan-to-income cap usually sets the ceiling; on a higher income the deposit you can raise often becomes the real constraint.

The deposit rules differ for property you intend to rent out. A buy-to-let mortgage requires a minimum deposit of 30%, so a €300,000 investment property needs €90,000 up front rather than the €30,000 a 10% rule would demand.

The cap is not a target

Meeting the loan-to-income limit does not mean a lender will hand you the maximum. Before advancing anything, a lender carries out its own affordability assessment: it looks at what you can realistically afford to repay, month after month, once the rest of your life is accounted for.

That assessment weighs your existing debts, how many dependants you support, and your regular outgoings. Lenders also stress-test the repayment — they check whether you could still meet it if interest rates rose above today’s level, so that a future rate rise does not tip you into difficulty.

The result is two separate numbers. The Central Bank’s loan-to-income cap is the regulatory ceiling — the most you may borrow under the rules. The affordability assessment sets the real number, which is often lower. Treat the cap as a boundary, not a goal, and plan around what you can comfortably repay rather than the largest sum you might qualify for.

What a loan that size costs

The maximum loan is an abstract figure until you see the monthly cost behind it. Take the €315,000 loan from the €350,000 first-time-buyer example. At an interest rate of 4% over a 30-year term, that loan costs €1,503.86 a month.

Over the full 30 years, the interest alone adds up to €226,389 — money paid on top of the €315,000 borrowed. That is the price of borrowing spread across three decades, and it is why the monthly repayment, not the maximum loan, is the number worth planning your budget around. A larger loan within your limit is not a larger amount of money to spend; it is a larger repayment to carry every month for years.

The exceptions

Lenders have limited discretion to lend above these limits. The Central Bank allows each lender to exceed the loan-to-income and loan-to-value caps for a small share of its lending each year — these are known as allowances. They are limited in volume and granted at the lender’s discretion, not on request, so they are the exception rather than a route most buyers can count on. These measures are current as of this page’s review and are periodically reviewed by the Central Bank, so check the position before you rely on any figure here.

This page explains how the rules work; it is educational and not financial advice. A personal borrowing decision is one to work through with a qualified mortgage adviser.