Buying a home in Northern Ireland: stamp duty, rates, mortgages and Co-Ownership
Buying a home in Northern Ireland: stamp duty, rates, mortgages and Co-Ownership
Buying in Northern Ireland is a mix of the familiar and the local. Stamp duty works exactly as it does in England. The running costs do not: instead of council tax you pay domestic rates, worked out on a 2005 valuation. And the main route to part ownership is not England's shared ownership scheme but Co-Ownership, which has its own share range, price limits and rent.
This guide walks through the money side of a purchase in 2026: the tax on the day, the monthly costs afterwards, and how Co-Ownership compares with buying outright. For the full list of NI differences, see our Northern Ireland hub.
Try it yourself: the First-Time Buyer Stamp Duty Calculator shows the SDLT on any price, and the Northern Ireland Rates Calculator estimates the annual rates on your new home.
Stamp duty: the same as England
Northern Ireland uses Stamp Duty Land Tax (SDLT), with the same bands and reliefs as England. For 2026/27:
- Standard rates: 0% up to £125,000, 2% to £250,000, 5% to £925,000, 10% to £1.5 million and 12% above.
- First-time buyers: 0% up to £300,000 and 5% from £300,000 to £500,000. Above £500,000 the relief is lost entirely and the standard rates apply to the whole price.
- Additional homes: a 5% surcharge on every band, for purchases from £40,000.
Here is what that means at typical NI prices, calculated with the same engine as our stamp duty calculator:
| Price | Home mover | First-time buyer | Additional property |
|---|---|---|---|
| £180,000 | £1,100 | £0 | £10,100 |
| £250,000 | £2,500 | £0 | £15,000 |
| £350,000 | £7,500 | £2,500 | £25,000 |
| £525,000 | £16,250 | £16,250 | £42,500 |
Two points that catch buyers out:
- First-time buyer relief needs every buyer to be a first-time buyer. If one of you has owned a home anywhere in the world, the relief is not available.
- The surcharge applies if you keep a home. If you buy before selling your current home, you pay the surcharge, but you can usually claim it back if you sell the old main home within three years.
Your solicitor files the return and pays the tax to HMRC on your behalf, usually from funds you provide before completion. Our stamp duty guide covers the reliefs in more depth.
How buying works in Northern Ireland
The process is broadly similar to England. According to nidirect, a purchase usually takes two to three months:
- Agreement in principle. Ask a lender how much it is willing to lend before you start viewing.
- Offer. Once you have found a home, you make an offer to the seller, usually through the estate agent, who will ask for your solicitor's details.
- Survey. Once your offer is accepted, get the property checked for defects. Your lender will also carry out its own valuation, which is not a survey.
- Legal work. Your solicitor deals with the seller's solicitor, checks the title and raises enquiries.
- Exchange of contracts. This is the point the sale becomes legally binding. Expect to pay a deposit of at least 5% of the price at this stage. Until then, either side can walk away.
- Completion. Your lender releases the mortgage funds to the seller's solicitor, the home is yours, and you can move in.
After completion the title is registered with Land Registry, and you should tell Land & Property Services (LPS) straight away that you are the new owner. Rates are due from the date you own the home, and late notice can lead to a backdated bill.
Budget for the costs around the price too: solicitor's fees, survey, mortgage arrangement fee, Land Registry fees and SDLT.
Budgeting for rates
Rates replace council tax, and they can be a significant monthly cost. The bill is your home's capital value (what it would have sold for on 1 January 2005, capped at £400,000) multiplied by the regional rate plus your council's district rate.
The capital value is not the price you are paying. Before you offer, look up the address on the LPS valuation search. Take a home with a capital value of £130,000. The 2026/27 bill depends on where it is:
| Council | Annual rates | Monthly (12) |
|---|---|---|
| Lisburn and Castlereagh | £1,238.25 | £103.19 |
| Belfast | £1,306.63 | £108.89 |
| Newry, Mourne and Down | £1,372.54 | £114.38 |
| Armagh City, Banbridge and Craigavon | £1,426.23 | £118.85 |
That is close to £190 a year between the cheapest and dearest of these four for the same value. Our guide to domestic rates in Northern Ireland explains how to check your valuation and the allowances that cut the bill.
Mortgage affordability
Lenders usually start from an income multiple, often around 4 to 4.5 times income, then check that you can afford the payments at a higher stress rate after your other commitments. A single buyer on £45,000 at 4.5 times income could borrow up to £202,500, before the lender's affordability checks.
Do not forget that rates are a monthly commitment. A lender may not ask about them in detail, but your budget should: on the £130,000 Belfast example, rates add £108.89 a month on top of the mortgage, buildings insurance and bills.
Test your own numbers with the Mortgage Affordability Calculator, and read our guide on how much mortgage you can afford.
Co-Ownership: Northern Ireland's part-buy, part-rent scheme
If you cannot afford to buy outright, Co-Ownership is the main route in Northern Ireland. It is run by Co-Ownership, a housing association, and works differently from England's shared ownership.
How it works
- You buy 50% to 90% of the home, starting with as much as you can afford. Co-Ownership buys the rest.
- You pay rent on Co-Ownership's share at 2.5% a year of the value of that share, reviewed once a year (new rents normally take effect on 1 April).
- You can buy more in 5% steps, or all at once, up to full ownership.
- Price limits: £215,000 for existing homes and £230,000 for new builds.
- Who it is for: you must live in NI, be able to afford the payments, and not have another, unassisted route into home ownership. It is designed for first-time buyers and people returning to home ownership.
- Fees: an application fee of £100, a property assessment fee of £120 and a legal fee of £480, plus your own solicitor's costs, SDLT where due and mortgage fees.
There is also a version for people aged 55 and over, Co-Own for Over 55s, where you use equity from a previous home or savings to buy your share and Co-Ownership funds the rest.
Worked example
A £200,000 existing home, within the £215,000 limit. We have assumed a 5% deposit on your share and a mortgage at 4.5% over 30 years, which are illustrations, not quotes.
| Buy outright | Co-Ownership, 50% share | |
|---|---|---|
| Your share | £200,000 | £100,000 |
| Deposit (5% of your share) | £10,000 | £5,000 |
| Mortgage | £190,000 | £95,000 |
| Monthly mortgage | £962.70 | £481.35 |
| Monthly rent (2.5% of £100,000 / 12) | £0 | £208.33 |
| Monthly total | £962.70 | £689.68 |
Co-Ownership halves the deposit and borrowing and saves £273.02 a month here. Buying a further 5% at the same value would cost £10,000 and cut the rent to £187.50 a month. Each new share is priced at the home's value at the time, so if prices rise, buying out costs more.
How Co-Ownership differs from England's shared ownership
Our Shared Ownership Calculator is built for England's scheme, so treat it with care for an NI purchase:
| Co-Ownership (NI) | Shared ownership (England) | |
|---|---|---|
| Starting share | 50% to 90% | 10% to 75%, usually at least 25% |
| Rent | 2.5% a year of Co-Ownership's share | Set in the lease; the calculator assumes 2.75% |
| Buying more | 5% steps or all at once | Set by the lease |
You can still use the calculator for an NI estimate: enter a share of 50% or more and change the rent to 2.5%. Its stamp duty options follow HMRC's shared ownership rules for England, so ask your solicitor how SDLT applies to your Co-Ownership purchase.
Frequently asked questions
Do first-time buyers pay stamp duty in Northern Ireland? Not on a home up to £300,000. Between £300,000 and £500,000 they pay 5% on the part above £300,000. Above £500,000 the relief is lost.
Is an accepted offer binding in Northern Ireland? No. The sale becomes legally binding at exchange of contracts, which is when you usually pay a deposit of at least 5%.
What is the most I can pay for a Co-Ownership home? £215,000 for an existing home or £230,000 for a new build.
Can I use Co-Ownership if I have owned before? Possibly. It is aimed at first-time buyers and people returning to home ownership, for example after a change in circumstances, provided you have no other unassisted route to buy.
When do I start paying rates? From the date you own the home. Tell LPS as soon as you complete to get an accurate bill and avoid a backdated one.
The bottom line
The tax on the day in Northern Ireland is England's SDLT, so first-time buyers pay nothing up to £300,000. The running costs are where NI differs: check the capital value on the LPS valuation search before you offer, and put the rates into your monthly budget. If buying outright is out of reach, Co-Ownership lets you start with 50% of a home up to £215,000 (or £230,000 new build) and pay 2.5% a year rent on the rest.
Run the numbers with the First-Time Buyer Stamp Duty Calculator, the Northern Ireland Rates Calculator and the Mortgage Affordability Calculator.
Related calculators and guides
- First-Time Buyer Stamp Duty Calculator, SDLT with first-time buyer relief
- Stamp Duty Calculator, home movers and additional properties
- Northern Ireland Rates Calculator, annual rates for any council
- Mortgage Affordability Calculator, how much lenders may offer
- Shared Ownership Calculator, England's scheme; set the rent to 2.5% for a Co-Ownership estimate
- Northern Ireland hub, every NI difference in one place
- Domestic rates in Northern Ireland explained, how the bill works and 7 ways to pay less
This article is for general guidance only and is not personalised tax, legal or mortgage advice. Rules and scheme limits can change, and your circumstances may differ. For advice on your purchase, speak to a solicitor and a qualified mortgage adviser. SDLT figures are for 2026/27 and sourced from gov.uk; the Autumn Budget on 28 October 2026 could change them.
Sources
Rates and rules in this article are taken from the official pages below. Figures were checked against these sources at the last review date shown above; always confirm against the source before acting.
- GOV.UK: Stamp Duty Land Tax, residential property rates
- HMRC: SDLT relief for first-time buyers
- HMRC: Buying an additional residential property
- nidirect: Buying a home, step-by-step guide
- nidirect: Sign up for rates
- nidirect: How rate bills are calculated
- Department of Finance NI: Rate poundages 2026 to 2027
- nidirect: Co-Ownership
- Co-Ownership: What is Co-Ownership
- Co-Ownership: Fees, costs and rent
- Co-Ownership: Property criteria
- GOV.UK: Shared ownership (England)
About the author
Alexandre Bernier, LLM (UK), CFP®, CIM®, PFP®. Financial planner with 18 years in banking and wealth management, holding a UK master of laws and the Canadian CFP®, CIM® and PFP® designations. Writes and reviews every calculator and article on FinanceToolz.
Rates and thresholds in this article are taken from HMRC and GOV.UK. See our editorial policy for how content is sourced, reviewed and corrected. This is general information, not regulated financial advice.