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Ireland Mortgage Rules 2026: Central Bank Limits, Exemptions & What Lenders Look At

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The two core limits

Every Irish mortgage application sits inside two ceilings set by the Central Bank’s macro-prudential framework: the loan-to-income (LTI) limit and the loan-to-value (LTV) limit. They’ve been in place since 2015, were loosened in early 2023, and remain the binding constraints for the vast majority of buyers.

  • LTI caps the mortgage at a multiple of gross annual income. The cap is 4× income for first-time buyers and 3.5× income for second-and-subsequent buyers. For joint applications, the multiple applies to combined gross income.
  • LTV caps the mortgage as a percentage of the property’s value. The cap is 90% LTV for first-time buyers (so 10% deposit minimum), 80% LTV for second-and-subsequent buyers (20% deposit), and 70% LTV for buy-to-let (30% deposit).

Your maximum borrowing is the lower of the two limits. Run both calculations and the binding one is the one that matters. A first-time-buyer couple earning €100,000 combined and putting €60,000 down can borrow up to €400,000 under LTI (4× €100k) but might be capped at €540,000 under LTV (90% of €600k); the LTI is the tighter ceiling, so €400k is the practical limit.

First-time buyer rules

For Central Bank purposes, a first-time buyer (FTB) is someone who hasn’t previously taken out a mortgage in their own name, or jointly, on a residential property in Ireland or abroad. The rules:

  • LTI: 4× gross income.
  • LTV: 90% of property value (10% minimum deposit).
  • Help-to-Buy interaction: HTB refund (up to €30,000 / 10% of price, whichever is lower) can be used as part of the deposit. Many FTBs combine HTB with a 10% LTV deposit so most of the cash comes from the refund rather than savings.

The trade-off is that FTB status is a one-shot designation. Once you’ve taken a mortgage out as an FTB, you don’t get the more generous LTI and LTV again — even if you sell and re-buy years later, the next purchase falls under SSB rules. (The exception: divorce/separation reversions to FTB status under specific Revenue conditions.)

Second and subsequent buyer rules

A second-and-subsequent buyer (SSB) is anyone who has previously held a mortgage — the typical mover. The rules tighten:

  • LTI: 3.5× gross income.
  • LTV: 80% of property value (20% minimum deposit).
  • No Help-to-Buy access.

For a mover with significant equity in their existing home, the 80% LTV cap is rarely the binding constraint — the equity from the sale typically funds the larger deposit. The 3.5× income cap, however, often is binding, especially for households that haven’t seen wage growth matching house-price inflation.

Buy-to-let

Investment-property buyers face the tightest limits:

  • LTI: not applicable — assessed on rental coverage instead.
  • LTV: 70% (30% deposit).
  • Stress test: rental income typically must cover 125–145% of the mortgage payment at a stressed rate.

This is the regime that makes small-scale residential landlording difficult to enter — the 30% deposit on a €350,000 property is €105,000, before stamp duty, fees, and any refurbishment cost.

Exemptions

Lenders can lend above the LTI and LTV caps on up to 15% of new mortgage lending in any year. These are commonly called “exceptions.” They’re discretionary at the lender’s underwriter level and tend to flow to:

  • Higher-income borrowers with strong repayment capacity.
  • Borrowers with stable employment in resilient sectors.
  • Cases where the loan is just slightly above the cap (e.g. 4.2× income for an FTB rather than 4.0×).

Each lender manages its own exception quota. A loan that’s a “no” at one bank may be a “yes” at another — the broker market exists in large part to find the lender with available exception headroom. There’s no published list of how each bank is using its 15% quota in any given quarter, but mortgage brokers track the market intelligence informally.

Two practical points: exceptions are not retroactive (you can’t apply for one after the loan is approved at the standard limit), and an exception-funded loan still has to pass the lender’s affordability stress test.

What lenders actually assess

The Central Bank limits are a ceiling — they’re not a guarantee that the loan will be offered. Every lender layers on its own affordability checks:

  • Stress test: the loan must be affordable at a notional interest rate at least 2 percentage points above the offer rate. An offer at 3.8% is stress-tested at 5.8%. If the borrower’s net disposable income can’t service the higher payment, the loan is declined regardless of how it looks at the offer rate.
  • Net disposable income (NDI) rules: each lender sets a per-household-composition NDI floor — the minimum monthly amount that must remain after the stressed mortgage payment and modelled household expenses (childcare, existing loans, transport, insurance).
  • Income source weighting: basic salary is weighted at 100%, regular overtime around 50%, bonus/commission at 50%, rental income variable.
  • Existing credit: outstanding personal loans, car finance, credit-card balances and student loans all reduce affordability. Most lenders treat a €400/month personal loan as if it were €400/month less mortgage capacity.

The stress test is often the binding constraint in 2026 — many borrowers at the top of their LTI band have an NDI floor that fails when 2pp is added to the rate.

How much can I borrow?

A worked example: single buyer, €80,000 gross salary, €40,000 deposit, target property €350,000.

  • LTI (FTB): 4 × €80,000 = €320,000 maximum mortgage.
  • LTV (FTB, 90%): 0.9 × €350,000 = €315,000 maximum mortgage.
  • Cash needed: €350,000 − €315,000 = €35,000 deposit + €1,000 stamp duty (no FTB stamp duty under €500k) + €2,500 legal/valuation = **€38,500 closing cash**.

The binding limit is LTV here (€315,000). The buyer has €40,000 in cash, which is enough for the 10% deposit and the closing costs.

If they wanted to stretch to a €380,000 property, the LTV cap (90% × €380,000 = €342,000) starts to bite against the LTI ceiling (€320,000), and the binding limit flips to LTI. They’d need a deposit of €60,000 — likely topped up by Help-to-Buy if they’re buying new-build.

Use the Mortgage Affordability Calculator for a full LTI vs LTV vs stress-test view, or the Mortgage Repayment Calculator for the monthly payment on any loan size.

Help-to-Buy and First Home Scheme

Two State schemes sit alongside the Central Bank rules and effectively boost a first-time buyer’s deposit:

  • Help-to-Buy (HTB): a Revenue tax-refund scheme. Eligible FTBs buying a new-build (or self-build) below €500,000 with at least 70% LTV can claim back up to €30,000 — or 10% of price, whichever is lower — of income tax and DIRT paid in the previous four years. The refund is paid to the buyer’s solicitor and applied at closing.
  • First Home Scheme (FHS): a shared-equity scheme run by Government, banks and the Housing Agency. The State takes a 20–30% equity stake in the property; the buyer repays the equity (with a fee from year 6 onward) when they sell or remortgage.

The schemes can be combined, although the FHS equity-share is reduced if HTB is also used. Authoritative details: Revenue Help-to-Buy and First Home Scheme.

Frequently asked questions

Can I get an exemption? Yes, but it’s at the lender’s discretion and depends on how much of their 15% quota is already used. Strong-income / strong-credit applicants who are slightly over the limit have the best chance. Don’t budget on getting one — treat it as a possible upside.

How long does mortgage approval last? Approval-in-Principle (AIP) is typically valid for 6 months but can be renewed if there’s no material change in your circumstances. A full loan offer once a property is identified is usually valid for 3 months from issue.

Can I include rental income in the LTI calculation? Yes, but heavily weighted. Most lenders use 50–75% of net rental income (after voids and operating costs) toward LTI. Some treat rent-a-room income more favourably than full BTL rental.

Are the rules different in Northern Ireland or for non-residents? Yes — the Central Bank macro-prudential rules apply to mortgages on Irish property by Irish-regulated lenders. UK mortgages and NI properties sit outside this regime. Non-residents borrowing for an Irish property face the same Central Bank caps but tighter individual-lender criteria, and typically higher rates.

What about variable-income workers? Self-employed, contractors and commission-based salespeople typically need 2–3 years of audited accounts or P60s/Forms 11 showing stable earnings. The lender will often average the lower of the last two years rather than use the most recent year. Cash-flow lumpiness is the single biggest sticking point — even strong long-term income can be hard to verify if it’s quarter-to-quarter volatile.