The mortgage market
Fewer buy-to-let lenders operate in Northern Ireland than in Great Britain, though the number has grown: the main banks, several building societies and a growing group of specialists. Limited-company and portfolio lending is available but the panel is smaller, which is exactly where a broker who knows the NI market earns their fee. Northern Ireland conveyancing is handled by NI solicitors.
Tax on purchases
Stamp Duty Land Tax applies as in England, with the 5-point additional-property surcharge. Lower property prices mean the surcharge often falls on the 0% band: on a £150,000 buy-to-let the SDLT is £500 standard plus £7,500 surcharge. A remortgage carries no SDLT.
Rates, not council tax
Domestic rates are based on the capital value and are the tenant's responsibility in most private tenancies, though landlords are liable where the capital value is below a threshold or the property is an HMO. Land & Property Services sets the figure.
Tenancies and standards
The Private Tenancies Act (NI) 2022 introduced longer notice periods, limits on rent increases to once a year, mandatory smoke, heat and CO alarms, EICR requirements and tenancy deposit protection. Landlords must be registered with the Landlord Registration Scheme. HMOs are licensed by councils. EPC and gas safety requirements apply.
Sister site
For residential mortgages in Northern Ireland, our sister site Belfast Mortgages matches buyers and remortgagers with local brokers.
A note on the numbers. Rental cover ratios, stress rates, loan-to-value limits and fees are typical of the market at the time of writing (2026) and differ from lender to lender. Tax rules are for individuals and companies resident in the UK and change with each Budget. This is general information, not advice: a broker will tell you what applies to your property, and an accountant what applies to your tax.
Common questions
Are there fewer buy-to-let lenders in Northern Ireland?
Yes, though the panel has grown. A broker who works the NI market regularly will know which specialists lend there and on what terms.
Who pays rates on a buy-to-let in Northern Ireland?
Usually the tenant, under the tenancy agreement, unless the property's capital value is below the threshold or it is an HMO, in which case the landlord is liable.
Your deal is ending. Let's get a broker on it.
Two minutes of questions about the property. We match you with a buy-to-let specialist who calls you back, usually within one working day. Free, no obligation.