Buy-to-Let 2026: Is It Still Worth It After Section 24 and 5% SDLT Surcharge?
Higher mortgage costs, 5% SDLT surcharge, Section 24 interest relief restriction, and declining net yields. We run the real numbers on UK buy-to-let in 2026 — and compare alternatives.
The UK BTL landscape in 2026
Buy-to-let in the UK has undergone a fundamental transformation since 2016. Four major headwinds have squeezed landlord returns:
- Section 24 (fully in force since 2020): mortgage interest restricted to 20% tax credit
- SDLT surcharge (increased to 5% in October 2024): massive upfront cost
- Higher mortgage rates: BTL rates 4.8-5.5% vs 2-3% in 2020-21
- EPC requirements (C rating from 2028): upgrade costs for older stock
Despite this, buy-to-let remains a £1.5 trillion market in the UK. The question is whether new entrants in 2026 can make the numbers work.
Rental Yield Calculator
Calculate gross and net rental yield for buy-to-let properties.
Open Rental Yield calculatorRegional gross yields: where BTL still stacks up
Average gross yields (rent ÷ property value) by region, June 2026:
| Region | Avg. property price | Avg. monthly rent | Gross yield |
|---|---|---|---|
| London | £520,000 | £1,820 | 4.2% |
| South East | £380,000 | £1,520 | 4.8% |
| South West | £320,000 | £1,280 | 4.8% |
| East England | £310,000 | £1,240 | 4.8% |
| West Midlands | £230,000 | £1,300 | 6.8% |
| East Midlands | £210,000 | £1,150 | 6.6% |
| Yorkshire/Humber | £190,000 | £1,020 | 6.4% |
| North West | £195,000 | £1,155 | 7.1% |
| Scotland | £175,000 | £950 | 6.5% |
The map is clear: London BTL is effectively dead for new entrants at 4.2% gross — once mortgage costs, voids, maintenance, and tax are accounted for, most London landlords are cashflow negative. Manchester, Birmingham, and Liverpool are where BTL still generates positive yields.
Worked example: £200,000 flat, rent £900/month
Purchase costs:
| Item | Amount |
|---|---|
| Property price | £200,000 |
| SDLT (5% surcharge on BTL) | £7,500 |
| Solicitor/searches | £2,000 |
| Survey | £500 |
| Mortgage arrangement fee (25% deposit, 75% LTV) | £1,499 |
| Total upfront cost | £211,499 |
| Deposit (25%) | £50,000 |
| Mortgage balance | £150,000 |
Annual income and costs:
| Item | Annual amount |
|---|---|
| Gross rent (£900 × 12) | £10,800 |
| Void allowance (6 weeks/year) | -£1,039 |
| Letting agent (10% of rent) | -£1,080 |
| Maintenance (1% property value) | -£2,000 |
| Landlord insurance | -£450 |
| Accountancy | -£500 |
| Gross profit before mortgage | £5,731 |
| Mortgage interest (£150k × 5.0%) | -£7,500 |
| Cash profit/loss before tax | -£1,769 (loss) |
But Section 24 means you still have taxable income:
| Calculation | Amount |
|---|---|
| Rent income | £10,800 |
| Less void and agent | -£2,119 |
| Less maintenance + insurance | -£2,450 |
| Taxable profit (before S24 interest adjustment) | £6,231 |
| Minus mortgage interest (20% tax credit basis) | £6,231 taxable |
| Tax at 40% (higher-rate) | £2,492 |
| Less 20% tax credit on £7,500 interest | -£1,500 |
| Tax bill | £992 |
Net after-tax position:
- Cash loss: -£1,769
- Plus tax bill: -£992
- True annual cost of ownership: -£2,761
- Initial capital deployed: £50,000 deposit + £11,499 acquisition costs = £61,499
- Net yield: deeply negative
This is a higher-rate taxpayer. A basic-rate (20%) landlord fares better (tax credit matches their rate), but still makes very slim margins.
Buy-to-Let Calculator
Analyse the profitability of a buy-to-let investment including tax and costs.
Buy-to-let calculatorThe limited company option
Operating through a limited company sidesteps Section 24 entirely — because companies can still deduct mortgage interest as a business expense. The trade-off is complexity and double taxation of extracting profits.
Ltd company BTL advantages
- Mortgage interest fully deductible against rental profit
- Profits taxed at Corporation Tax rate (19-25% depending on profit level)
- Dividends drawn at dividend tax rates (10.75%/35.75% in 2026/27)
- IHT planning options via company structure
Ltd company disadvantages
- BTL lenders charge higher rates for limited companies (+0.2-0.5%)
- Most residential mortgage lenders won't lend to LLPs or LTDs without personal guarantees
- Setup cost: ~£1,000-2,000
- Ongoing accountancy: £1,000-2,000/year
- Extracting profits: taxed again as dividends
- Personal credit checks still required by most BTL lenders
Break-even point: the additional cost and complexity typically pays off when annual rental profit exceeds £25,000-30,000 — usually multiple properties or high-value single assets.
SDLT surcharge: the hidden killer
The SDLT surcharge increase from 3% to 5% in October 2024 dramatically increases the upfront cost and extends the time to break even.
SDLT on BTL properties (2026):
| Property price | SDLT (BTL investor) | SDLT (FTB equiv.) | Extra cost |
|---|---|---|---|
| £150,000 | £7,500 | £0 | £7,500 |
| £200,000 | £7,500 | £0 | £7,500 |
| £250,000 | £13,750 | £2,500 | £11,250 |
| £350,000 | £27,500 | £2,500* | £25,000 |
| £500,000 | £40,000 | £10,000 | £30,000 |
*FTB SDLT: 5% on portion above £300,000.
A landlord buying a £250,000 property pays £11,250 more in SDLT than an FTB. At net annual yield of £2,000, that's 5.6 years just to recover the SDLT premium. Add in agent fees, maintenance, and mortgage costs, and break-even is 8-10 years from day one.
Alternatives to direct buy-to-let
Real Estate Investment Trusts (REITs)
- Typical yield: 4-6%
- Minimum investment: £1 (via an ISA or GIA)
- Liquidity: daily — sell any time
- Tax: within a Stocks & Shares ISA, all gains and income tax-free
- Management: zero — fully passive
REITs like SEGRO (industrial/logistics), British Land (retail/office), or LondonMetric (warehouses) provide exposure to UK commercial real estate without any of the BTL headaches. Not correlated to residential property cycles.
Commercial property funds
- Typical yield: 6-8%
- Accessible via funds and ETFs
- Less volatile than residential in some cycles
- Limited liquidity in fund structures (redemption queues during crises)
Parking spaces and garages
- Average gross yield: 8-12%
- Low maintenance, no tenant management complexity
- No EPC requirements
- Smaller capital outlay (£15,000-50,000 in cities)
- Less capital growth potential
Mortgage Calculator
Calculate monthly mortgage payments, total interest, and full repayment cost.
Mortgage calculatorWhen BTL still makes sense in 2026
Despite the headwinds, BTL works for specific situations:
-
Cash buyers: no mortgage = no Section 24 issue. £200k flat at 5.4% gross yield = £10,800/year income taxed as rental profit. Still competitive with savings rates.
-
High-yield northern cities: Manchester, Liverpool, Leeds properties at 7%+ gross yield have enough margin to absorb costs and still generate positive cashflow even for mortgaged higher-rate taxpayers.
-
Ltd company portfolios at scale: £25k+ annual profit justifies the complexity. Portfolio landlords with 5+ properties often find ltd company structure superior.
-
Accidental landlords: inherited or retained previous home. Already own without BTL acquisition costs or high SDLT. Different calculus entirely.
-
Capital growth plays: London zones 2-3 properties may yield 3.5% but delivered 3-5% annual capital growth historically. Total return story rather than yield story — higher risk, higher leverage.
Sources
- Rightmove: Rental market trends 2026
- gov.uk: Stamp Duty Land Tax — higher rates
- HMRC: Restricting finance cost relief for landlords (Section 24)
- Paragon Bank: BTL mortgage market data 2026
- gov.uk: Energy efficiency in rented homes
Frequently asked questions
What is the SDLT surcharge on a buy-to-let property in 2026?
From October 2024, the additional SDLT surcharge for second homes and buy-to-let properties increased from 3% to 5% on all purchase price. On a £250,000 BTL property, total SDLT is £13,750 — compared to £2,500 for a first-time buyer.
What is Section 24 and how does it affect buy-to-let profits?
Section 24 (fully in force since April 2020) restricts mortgage interest deduction for individual landlords to a 20% tax credit — regardless of their actual tax rate. A higher-rate landlord paying £12,000/yr interest gets only a £2,400 credit vs previously deducting £12,000 in full. This can create a taxable profit even when making a cash loss.
What are typical buy-to-let mortgage rates in 2026?
BTL fixed rates typically run 0.6-1.5% above equivalent residential rates. In June 2026, typical 2-year BTL fixed rates are approximately 4.8-5.5% depending on LTV. Most BTL lenders require a 25% deposit (75% LTV maximum).
What gross rental yield do you need to cover a BTL mortgage in 2026?
Most BTL lenders stress-test rental income at 125-145% of the monthly mortgage payment (at a stressed rate of 5.5-6%). On a £200,000 property with 75% LTV mortgage (£150k) at 5%, monthly interest is £625 — so you need rental income of at least £781-906/month.
Is a limited company better than buying BTL personally in 2026?
For higher-rate taxpayers with profits above roughly £25,000/year, a limited company structure offers advantages: mortgage interest remains fully deductible against profit, profits taxed at Corporation Tax (19-25%), dividends drawn at dividend tax rates. Setup costs £1,000-2,000, ongoing accountancy £1,000-2,000/yr.
What are the average buy-to-let yields across UK regions in 2026?
Average gross yields vary significantly: London 4.2%, South East 4.8%, Manchester 7.1%, Birmingham 6.8%, Leeds 6.5%, Liverpool 7.4%, Bristol 5.2%, Scotland 6.4%. Higher yields in northern cities come with different void risk and growth profiles.
What alternatives to buy-to-let give similar returns without the hassle?
REITs (Real Estate Investment Trusts) offer 4-6% yields with daily liquidity, no tenant management, no SDLT, within an ISA tax-free. Commercial property funds return 6-8%. These lack the leverage of BTL but also lack the risk concentration.
What are the main hidden costs of buy-to-let that landlords underestimate?
Common hidden costs: void periods (1-2 months typically = 8-17% annual yield erosion), letting agent fees (8-15% of rent), maintenance (budget 1% of property value/yr), EPC compliance (C rating required from 2028), insurance (£300-600/yr), accountancy, legal fees, and mortgage arrangement fees on each remortgage.
When does buy-to-let still make financial sense in 2026?
BTL still works for: (1) cash buyers with no mortgage (no Section 24 issue); (2) limited company structures at higher profit levels; (3) high-yield northern properties where gross yields exceed 7%; (4) long-term capital growth plays in regeneration areas; (5) accidental landlords who already own the property without a BTL mortgage.
What is the EPC C requirement for buy-to-let?
From 2028, all new BTL tenancies must have an EPC rating of C or above. Existing tenancies must comply by 2030. Upgrading a D or E rated property to C can cost £5,000-15,000 depending on current insulation and heating system.
Try the calculators
Related reading
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