Buy to let tax is still the single biggest lever on your real-world returns in 2026/27. The headlines are familiar—mortgage interest relief stays restricted, CGT rates are higher than a few years ago, and allowances remain frozen—but the numbers matter, and they vary sharply by region and by landlord profile.

Below is a market-data style breakdown of the key figures, year-on-year comparisons, and what the 2026/27 position means for your cash flow and exit planning.

Executive summary (key figures for 2026/27)

Personal Allowance: £12,570 (frozen).

Basic rate band (England, Wales, NI): 20% up to £37,700 of taxable income (so £50,270 including Personal Allowance).

Higher rate: 40% from £50,271 to £125,140.

Additional rate: 45% from £125,141.

Savings/Dividend allowances: dividend allowance is £500 (post-2024 cut).

Mortgage interest relief for individuals: still via 20% tax credit (Section 24 rules).

Capital Gains Tax (CGT) on UK residential property: 18% (basic rate) / 24% (higher/additional rate).

CGT annual exempt amount: £3,000.

Stamp Duty Land Tax (SDLT) surcharge on additional dwellings (England & NI): +3 percentage points.

Sources: HMRC Income Tax rates and allowances (2026/27 assumed unchanged from 2025/26 unless legislated), HMRC CGT rates and allowances, HMRC SDLT guidance; CGT residential rate cut to 24% effective 6 April 2024 (UK Budget 2024).

The 2026/27 buy-to-let tax landscape: rates, bands and allowances

This section sets out the core numbers that drive buy to let tax in 2026/27.

Income tax bands (England, Wales, Northern Ireland)

Non-savings income (which includes rental profits) is taxed at:

| Band (2026/27) | Taxable income | Rate |

|---|---:|---:|

| Personal Allowance | Up to £12,570 | 0% |

| Basic rate | £12,571–£50,270 | 20% |

| Higher rate | £50,271–£125,140 | 40% |

| Additional rate | £125,141+ | 45% |

Key detail: the Personal Allowance is tapered once your adjusted net income exceeds £100,000, reaching £0 at £125,140. That creates an effective marginal rate of 60% in the taper band.

Source: HMRC Income Tax rates and Personal Allowance rules (ongoing policy, thresholds frozen in recent years).

Mortgage interest relief (Section 24) remains a 20% credit

For individual landlords, finance costs (mortgage interest, arrangement fees, etc.) are not deducted from rental income to arrive at taxable profit. Instead, you receive a tax reducer equal to 20% of eligible finance costs.

Practical effect:

If you pay tax at 40% or 45%, you do not get full relief for interest.

Your taxable rental profit looks higher than your cash profit.

Source: HMRC guidance on restriction of finance cost relief for residential landlords (Section 24).

CGT on disposal of residential property

For UK residential property (where not covered by reliefs like Private Residence Relief):

| CGT element (2026/27) | Figure |

|---|---:|

| Annual exempt amount | £3,000 |

| CGT rate (basic rate taxpayer) | 18% |

| CGT rate (higher/additional rate taxpayer) | 24% |

Source: HMRC CGT rates and allowances; Budget 2024 reduced the higher residential rate from 28% to 24% from 6 April 2024.

SDLT: additional property surcharge

In England and Northern Ireland, buying an additional residential property (typical for buy-to-let) attracts a 3% surcharge on top of standard SDLT rates.

Source: HMRC SDLT higher rates for additional dwellings.

Detailed breakdown: what the numbers look like in practice (with examples)

The biggest buy to let tax swing factor is whether Section 24 pushes you into a higher band.

Example A: basic-rate landlord (lower leverage)

Assumptions (annual):

Rent received: £14,400 (£1,200 pcm)

Allowable non-finance costs (repairs, insurance, agent fees): £3,400

Mortgage interest: £4,800

Other income keeps landlord in basic rate

Step-by-step:

Taxable rental profit (ignoring interest): £14,400 − £3,400 = £11,000

Income tax at 20%: £2,200

Section 24 credit (20% of interest): 20% × £4,800 = £960

Tax due on rental: £2,200 − £960 = £1,240

Cash position (simplified):

Cash profit before tax: £14,400 − £3,400 − £4,800 = £6,200

After tax: £4,960

Example B: higher-rate landlord (same property, higher leverage)

Assumptions (annual):

Rent received: £14,400

Non-finance costs: £3,400

Mortgage interest: £7,200

Other income already uses basic-rate band (so rental is taxed at 40%)

Taxable rental profit: £14,400 − £3,400 = £11,000

Income tax at 40%: £4,400

Section 24 credit: 20% × £7,200 = £1,440

Tax due on rental: £4,400 − £1,440 = £2,960

Cash position (simplified):

Cash profit before tax: £14,400 − £3,400 − £7,200 = £3,800

After tax: £840

Takeaway: same rent, similar costs—massively different outcomes. This is why buy to let tax planning in 2026/27 is less about “what’s the rate?” and more about band management + leverage.

Year-on-year comparisons: what changed vs recent years

Even when 2026/27 rates look “stable”, landlords are still feeling the cumulative effect of policy changes since 2020.

Key tax parameter changes (selected years)

| Measure | 2020/21 | 2023/24 | 2024/25 | 2026/27 position |

|---|---:|---:|---:|---:|

| CGT annual exempt amount | £12,300 | £6,000 | £3,000 | £3,000 |

| CGT higher rate (residential) | 28% | 28% | 24% | 24% |

| Dividend allowance | £2,000 | £1,000 | £500 | £500 |

| Mortgage interest relief (individuals) | Restricted (phased earlier) | 20% credit | 20% credit | 20% credit |

Sources: HMRC CGT allowances; UK Budget documents (CGT rate cut effective April 2024); HMRC dividend allowance history.

What the year-on-year data means

The CGT allowance fell by 75% from £12,300 (2020/21) to £3,000 (2024/25 onwards). That pulls more small/medium gains into charge.

The CGT headline rate for higher-rate taxpayers on residential property is 4 percentage points lower than pre-April 2024 (28% → 24%), but many landlords still pay more overall because the allowance is so much smaller.

Frozen income tax thresholds create fiscal drag: as rents rise and wages rise, more landlords are pushed into 40%.

Regional variations: where the numbers bite hardest

Tax rates are national (with devolved differences), but the impact varies by local rents, prices, and typical yields.

Scotland: different income tax bands change the rental profit tax outcome

If your property is in Scotland, Scottish Income Tax applies to non-savings income (including rental profits) for Scottish taxpayers. Scotland has different bands and rates from England/Wales/NI, which can increase the marginal tax on rental profits.

Action point: if you operate across borders, do not assume your marginal rate matches your tenant’s postcode—it follows your taxpayer status.

Source: Scottish Government/HMRC guidance on Scottish Income Tax.

England & Wales: yield vs price drives how painful Section 24 feels

A simple way to see regional pressure is to compare:

Gross yield (rent ÷ price)

Typical mortgage interest burden at prevailing rates

Lower-yield, higher-price markets (often London and parts of the South East) typically have:

Higher borrowing required per £ of rent

A greater chance that Section 24 turns a “cash profit” into a “taxable profit” problem

Higher-yield regions (often parts of the North of England and Wales) can absorb tax friction better because rent covers finance costs more comfortably.

Data sources to use for your own benchmarking:

ONS: Private rental market statistics (regional rent levels, updated regularly)

HM Land Registry: Price Paid Data (regional sale prices)

What these figures mean for landlords in 2026/27

Here’s how the 2026/27 buy to let tax picture translates into day-to-day decisions.

Band management is now a core landlord skill. One extra £1 of taxable rental profit can be taxed at 40%, 45%, or even an effective 60% in the Personal Allowance taper range.

Leverage is taxed differently depending on your rate. With Section 24, higher-rate landlords get materially less relief for interest than basic-rate landlords.

Exits need CGT modelling, not guesswork. The £3,000 CGT allowance means even modest gains produce a bill, and the reporting/payment rules for UK property disposals are strict.

Corporate vs personal ownership remains a tax-led conversation. Companies generally deduct finance costs differently, but you then face corporation tax and extraction tax—so you need a full, personalised comparison.

Actionable recommendations (based on the data)

Use these as a practical checklist for 2026/27 planning:

Run a band-threshold forecast now: project your total taxable income for 2026/27 including rental profit (as calculated under Section 24). Identify whether you cross £50,270 or £100,000.

Stress-test interest rates: model your portfolio at +1% and +2% on borrowing. If the after-tax cash surplus collapses (as in Example B), you need to change something—rent strategy, refinancing, or deleveraging.

Plan disposals with the £3,000 CGT allowance in mind:

- If you have multiple assets to sell, consider timing across tax years.

- Capture improvement costs correctly (capital vs revenue) to support the CGT computation.

Review ownership structure before acquisition, not after: the SDLT 3% surcharge is a purchase-time cost you do not get back. Model the full life-cycle tax.

Keep records like HMRC will ask for them: separate revenue repairs from capital improvements, retain invoices, and track mileage and agent statements. Good records reduce errors and speed up self assessment.

Streamlining landlord tax admin with AI

Buy to let tax in 2026/27 is paperwork-heavy: rental income tracking, categorising costs correctly, and keeping a clean audit trail for your accountant. Abodient helps by automating day-to-day tenant and maintenance communication and keeping property activity organised, so you can match works, invoices and timelines more easily when it’s time to prepare your accounts.

Frequently Asked Questions

What is the most important buy to let tax rule for 2026/27?

For most individual landlords it is Section 24: mortgage interest is not deducted from rental income; you receive a 20% tax credit instead. This is where higher-rate landlords feel the biggest squeeze.

What is the CGT allowance for 2026/27?

The CGT annual exempt amount is £3,000. Anything above that (after allowable costs and reliefs) is taxed at 18% or 24% for residential property, depending on your income tax position.

Are buy-to-let landlords still paying the 3% SDLT surcharge in 2026/27?

Yes. In England and Northern Ireland, most buy-to-let purchases attract the higher rates for additional dwellings: an extra 3 percentage points on each SDLT band.

Does Scotland have different buy-to-let income tax rates?

Yes. Scottish Income Tax applies to non-savings income for Scottish taxpayers and uses different bands and rates from England/Wales/NI. That can change the tax outcome on rental profits.

How do I know if Section 24 pushes me into higher-rate tax?

You need to calculate your taxable rental profit before interest (rent minus allowable non-finance costs), then add that to your other taxable income. If the total crosses £50,270 (England/Wales/NI), the excess is taxed at 40%.

Your 2026/27 numbers don’t need heroics—they need clarity. Forecast your bands, model your interest costs, and treat CGT and SDLT as part of the same lifecycle plan. That’s how you keep returns predictable when buy to let tax stays tight.