A buy to let mortgage allows you to purchase property specifically to rent out to tenants. In Ireland, these investment mortgages operate under different rules than standard residential mortgages, with higher deposits, stricter lending criteria, and significant tax implications you need to understand before committing.
This guide covers everything Irish property investors need to know about buy to let mortgages in 2026, from Central Bank rules to which lenders offer the best rates and how rental income is assessed.
What is a Buy to Let Mortgage?
A buy to let mortgage is designed for purchasing or remortgaging property you intend to rent out rather than live in yourself. Irish lenders classify these as non-principal private residence (non-PPR) mortgages, and they’re subject to different Central Bank lending rules than owner-occupier mortgages.
The key distinction: lenders assess affordability primarily on projected rental income from the property, not just your personal income. However, they still verify your employment and income to ensure you can cover mortgage payments if the property sits vacant.
Buy to let mortgages apply whether you’re purchasing a single apartment to rent, buying a second home to let out, or building a portfolio of investment properties.
Central Bank Rules for Buy to Let Mortgages
The Central Bank of Ireland imposes stricter loan-to-value limits on investment properties compared to primary residences. For buy to let purchases:
- Maximum LTV: 70% — You need at least a 30% deposit
- No first-time buyer exemptions — The higher LTV limits for first-time buyers (90%) don’t apply to investment properties
- No income limits — Unlike residential mortgages where lenders can’t exceed 3.5x your income without special approval, investment property lending is assessed on rental income coverage rather than income multiples
Most Irish lenders actually require deposits of 35-40% for buy to let mortgages, going beyond the Central Bank minimum. This reflects the higher risk lenders perceive with investment properties.
Buy to Let Mortgage Deposits in Ireland
Here’s what major lenders typically require for buy to let deposits in 2026:
| Lender | Minimum Deposit | Maximum LTV |
|---|---|---|
| AIB | 35% | 65% |
| Bank of Ireland | 30% | 70% |
| Permanent TSB | 40% | 60% |
| Haven | 30% | 70% |
| Finance Ireland | 30% | 70% |
| ICS Mortgages | 35% | 65% |
The larger deposit requirement means you need substantial savings or equity before investing in rental property. For a €300,000 property, you’re looking at €90,000 to €120,000 upfront depending on the lender.
Some lenders offer slightly better terms if you’re purchasing multiple properties simultaneously or if you have an existing mortgage relationship with them. Investment property purchases also incur higher stamp duty rates than residential purchases.
How Lenders Assess Rental Income
Irish lenders don’t simply look at what rent you plan to charge. They apply specific calculations to ensure the property generates sufficient income to cover mortgage payments with a safety margin.
Rental Coverage Requirements
Most lenders require projected rental income to cover 125-140% of the monthly mortgage payment. This means if your mortgage costs €1,000 monthly, the property must generate at least €1,250-€1,400 in monthly rent.
Some lenders calculate this coverage at a stressed interest rate — typically 2% above your actual mortgage rate — to ensure you can still afford payments if rates rise. If you’re getting a 4% mortgage rate, they’ll assess rental coverage as if the rate were 6%.
How Rental Income is Verified
For rental income assessment, lenders typically require:
- Chartered surveyor’s rental valuation report — Professional assessment of realistic market rent for the property
- Evidence of existing leases if you already own rental properties
- Property details including location, type, and condition that affect rental potential
Lenders usually assess rental income at 75% of the surveyed market rent, not 100%. This accounts for void periods, maintenance costs, and collection issues. So if a surveyor values market rent at €1,600 monthly, the lender calculates affordability using €1,200.
Your Personal Income Still Matters
Even though affordability is assessed on rental income, lenders verify your employment and personal income. They want assurance you can cover mortgage payments during void periods or if tenants default on rent.
Most lenders require you to demonstrate that even without rental income, you could cover at least a portion of the mortgage payment from personal earnings. This varies by lender but typically means having personal income of at least €40,000-€50,000 annually.
Buy to Let Mortgage Rates Ireland 2026
Buy to let mortgage rates run higher than standard residential rates, typically by 0.5-1 percentage point. As of October 2026, with ECB rates declining from their 2023 peak, investment property rates have become more competitive:
| Rate Type | Typical Range | Example Lender Rates |
|---|---|---|
| 3-Year Fixed | 4.2-4.8% | AIB 4.35%, BOI 4.45% |
| 5-Year Fixed | 4.0-4.6% | Haven 4.15%, PTSB 4.5% |
| 10-Year Fixed | 4.5-5.1% | BOI 4.65%, AIB 4.85% |
| Variable | 5.0-5.8% | PTSB 5.4%, Haven 5.2% |
These rates assume a 70% LTV mortgage. If you put down a larger deposit (say, 50%), some lenders offer lower rates as the loan presents less risk.
Unlike residential mortgages where cashback offers and switcher incentives are common, buy to let mortgages rarely include promotional benefits. You’re primarily comparing interest rates and terms.
Interest-Only Buy to Let Mortgages
Several Irish lenders offer interest-only options for buy to let mortgages, where you pay only the mortgage interest each month without reducing the capital owed. This significantly reduces monthly payments, improving cash flow from rental income.
How Interest-Only Works
On a €200,000 mortgage at 4.5% interest:
- Capital and interest payment: €1,013 monthly
- Interest-only payment: €750 monthly
That’s €263 monthly extra in your pocket, though you still owe the full €200,000 at the end of the interest-only period.
Irish lenders typically offer interest-only periods of 5-10 years on buy to let mortgages. After this period, the mortgage converts to capital and interest repayment for the remaining term. Your monthly payment then increases substantially as you’re covering both interest and capital repayment over fewer years.
When Interest-Only Makes Sense
Interest-only mortgages work best when:
- You expect significant property appreciation and plan to sell before the interest-only period ends
- You’re purchasing multiple properties and want to maximise cash flow for further investments
- You have other investment income that will allow you to pay off the capital later
- Rental yields are tight and capital repayment would eliminate profit
The risk: if property values don’t appreciate as expected or you can’t refinance on better terms later, you could face payment shock when the interest-only period ends.
Which Irish Lenders Offer Buy to Let Mortgages
Not all Irish lenders actively offer buy to let mortgages. As of 2026, your options include:
AIB — Offers both capital-and-interest and interest-only buy to let mortgages up to 65% LTV. Generally competitive rates for customers with existing AIB accounts. Maximum loan of €1 million for investment properties.
Bank of Ireland — Provides buy to let lending up to 70% LTV with interest-only options available. Accepts rental income from properties outside major urban centres, which some lenders restrict.
Permanent TSB — More conservative approach requiring 40% deposits but offers competitive rates for customers with strong financial profiles. Interest-only available up to 10 years.
Haven Mortgages — Specialist lender offering flexible buy to let products up to 70% LTV. Good option for professional landlords with multiple properties. Interest-only terms available.
Finance Ireland — Non-bank lender with appetite for investment property lending. Will consider more complex scenarios including multiple properties and portfolio lending. Rates slightly higher but more flexible criteria.
ICS Mortgages — Available through mortgage brokers only. Good option if you’ve been declined by mainstream banks. Slightly higher rates but considers cases other lenders won’t touch.
Most lenders cap the total amount they’ll lend for investment properties. If you’re building a portfolio, you may need to spread mortgages across multiple lenders.
Tax Implications of Buy to Let Properties in Ireland
Property investment in Ireland carries significant tax obligations that directly impact your returns. Understanding these before purchasing is essential.
Rental Income Tax
All rental income is taxable as income, not capital gains. It’s added to your other income and taxed at your marginal rate — potentially up to 52% including income tax, USC (Universal Social Charge), and PRSI.
If you earn €60,000 from employment and receive €15,000 in rental income annually, that rental income is taxed at your highest rate on the €60,000-€75,000 income band.
Allowable Deductions
You can deduct certain expenses from rental income before calculating tax:
100% deductible:
- Mortgage interest payments (full deductibility restored in 2019)
- PRTB (Residential Tenancies Board) registration fees
- Insurance specifically for rental properties
- Professional fees for rent collection
75% deductible:
- Management fees
- Maintenance and repairs
- Accountancy fees
- Legal fees related to letting
The 75% restriction on most expenses (except mortgage interest) significantly limits deductions compared to commercial property investment in other jurisdictions.
Capital Gains Tax
When you eventually sell a buy to let property, any profit over your purchase price (plus qualifying expenses like solicitor fees and stamp duty) is subject to Capital Gains Tax at 33%.
Unlike your primary residence which is usually CGT-exempt, investment properties always incur this tax on sale. CGT is calculated on the gain after deducting your purchase price, buying costs, and qualifying improvement costs.
Local Property Tax
All residential properties in Ireland are subject to Local Property Tax (LPT) based on the property’s market value. This ranges from €90 to €1,815 annually depending on property value and location. As the property owner, you pay LPT even though the property is let to tenants.
Tax Planning Considerations
Some investors structure ownership through limited companies rather than personal ownership to access the 12.5% corporation tax rate on profits rather than marginal income tax rates up to 52%. However, company ownership adds complexity, costs, and means you can’t later claim Principal Private Residence relief if you move into the property.
Professional tax advice before purchasing investment property is worth the cost to structure ownership optimally for your circumstances.
Buy to Let vs. Switching Your Primary Residence
Some homeowners consider converting their current home to a rental property when they purchase a new primary residence, rather than selling. This means switching your existing residential mortgage to a buy to let product.
Irish lenders have specific policies on this:
- Most require you to reapply under buy to let criteria, meaning the property must meet rental income coverage requirements
- Your LTV may exceed the 70% limit for new buy to let lending, but lenders usually allow this if you already have the mortgage
- Interest rates typically increase by 0.5-1% when converting from residential to buy to let
- You may need to show you can afford both your new residential mortgage and your buy to let mortgage simultaneously
Some lenders are reluctant to approve these conversions, preferring you to sell and discharge the mortgage rather than become a landlord. Others, particularly if you’re taking out a new residential mortgage with them for your new home, view it more favourably.
Becoming a Landlord in Ireland: Beyond the Mortgage
Securing a buy to let mortgage is just the first step. Being a landlord in Ireland comes with legal obligations:
- Register with the RTB — All tenancies must be registered within one month of commencement; costs €90 per tenancy
- Comply with minimum standards — Properties must meet specific standards for safety, heating, ventilation, and facilities
- Rent pressure zones — In designated areas, you can only increase rent by up to 2% annually
- Notice periods — Strict rules govern how and when you can end tenancies
- Tax compliance — Submit annual rental income tax returns
Many landlords use letting agents who handle tenant management, rent collection, and maintenance coordination for 8-12% of monthly rent. This reduces your profit but eliminates day-to-day involvement.
Is Buy to Let Right for You?
Before applying for a buy to let mortgage, honestly assess:
Can you afford the deposit? With 30-40% required, you need substantial savings or equity from another property.
Will rental income cover all costs? Beyond the mortgage, factor in insurance, maintenance, void periods, management fees, and tax. Many Irish rental properties generate only modest positive cash flow after all expenses.
Can you handle risk? Tenant default, property damage, extended vacancy periods, and unexpected major repairs all fall to you. You need financial reserves beyond your deposit.
Do you understand the tax position? With rental income taxed at potentially 52% and only 75% of most expenses deductible, your actual return may be lower than you anticipate.
Is property appreciation likely? Much of the return from buy to let investment comes from property value increases over time, not rental yield. If prices stagnate or fall, your investment may underperform.
Property investment through buy to let mortgages can build wealth over time, particularly if you can weather short-term challenges and hold properties long enough to benefit from appreciation. But it’s not passive income — being a landlord involves ongoing work, risk, and significant tax obligations that affect your returns.
Working with a mortgage broker experienced in investment property can help you compare lenders, understand true costs, and structure your borrowing to maximise returns while meeting regulatory requirements.
See also: How Much Can I Borrow? | Mortgage Rates Ireland 2026 | Central Bank Mortgage Rules Ireland | Mortgage Brokers in Ireland | Stamp Duty Ireland 2026