Buy to Let Stamp Duty 2026: Rates, Rules and Worked Examples
How the 5% additional property surcharge applies to a buy-to-let purchase: the rules that decide whether you pay it, band-by-band figures from £150,000 to £1 million, and the effect on yield.
Key Takeaways
- SDLT must be paid from your own funds within 14 days of completion. It cannot be added to a buy-to-let mortgage, so your cash requirement is deposit + SDLT + fees.
- At £250,000, a BTL landlord pays £15,000 in SDLT: six times the £2,500 a standard homebuyer pays on the same property.
- The effective SDLT rate (tax as a percentage of price) rises from around 5.3% at £150,000 to 8.0% at £500,000 as higher bands take a larger share.
- A £8,400 SDLT bill on a £210,000 property returning 5% gross yield takes about two years of gross rent to recover. Higher yields compress this payback period.
- Factoring SDLT into total acquisition cost typically reduces gross yield by 0.4 to 0.8 percentage points, enough to make low-yield properties fail a return threshold.
- For properties over £500,000 bought through a company, a flat 17% rate applies to the entire purchase price, costing £85,000 at £500,001 versus £40,000 for personal ownership.
What clients say
Calculate Your BTL Stamp Duty
The quickest way to get your exact number is to use our buy to let stamp duty calculator. Enter your purchase price and it instantly applies the 5% additional dwelling surcharge to each band, showing you a full breakdown. The worked examples below cover the eight most common price points in detail.
How the surcharge works: The 5% surcharge is added to every standard SDLT band. On the first £125,000 the rate becomes 5% (0% + 5%). On £125,001 to £250,000 it becomes 7% (2% + 5%). On £250,001 to £925,000 it becomes 10% (5% + 5%). This is not a flat 5% on the total price; it applies within each band, producing a marginally higher effective rate as values climb into the upper bands. Not sure whether the surcharge applies to you? The ownership test at completion below decides it.
Worked Examples: 8 Price Points from £150k to £1M
The table below shows the total SDLT and effective rate at eight standard price points. Each row includes the full band breakdown so you can see exactly where the money goes.
| Price | Band breakdown | Total SDLT | Eff. rate |
|---|---|---|---|
| £150,000 | £125k at 5% + £25k at 7% | £8,000 | 5.3% |
| £200,000 | £125k at 5% + £75k at 7% | £11,500 | 5.8% |
| £250,000 | £125k at 5% + £125k at 7% | £15,000 | 6.0% |
| £300,000 | £125k at 5% + £125k at 7% + £50k at 10% | £20,000 | 6.7% |
| £400,000 | £125k at 5% + £125k at 7% + £150k at 10% | £30,000 | 7.5% |
| £500,000 | £125k at 5% + £125k at 7% + £250k at 10% | £40,000 | 8.0% |
| £750,000 | £125k at 5% + £125k at 7% + £500k at 10% | £65,000 | 8.7% |
| £1,000,000 | £125k at 5% + £125k at 7% + £675k at 10% + £75k at 15% | £93,750 | 9.4% |
All figures assume personal ownership with the 5% surcharge. Non-residents add 2%. For company purchases above £500,000, a flat 17% rate applies: see note below.
Company purchases above £500,000
When a limited company buys a residential property for more than £500,000, a flat 17% rate applies to the entire purchase price. At £500,001 this means £85,000 in SDLT, versus £40,000 for personal ownership on the same property. The two routes are identical in cost for properties below £500,000. For detailed portfolio strategies and incorporation analysis, see the portfolio landlord stamp duty guide.
England vs Scotland vs Wales: BTL Tax on the Same Property
The figures above apply to England and Northern Ireland. Scotland and Wales tax buy-to-let purchases under their own systems, and the gap is substantial. Scotland adds an 8% Additional Dwelling Supplement on the entire price on top of standard LBTT. Wales uses a separate set of higher rate bands rather than a flat surcharge. The same purchase price produces three very different bills:
| Price | England (SDLT + 5%) | Scotland (LBTT + 8% ADS) | Wales (LTT higher rates) |
|---|---|---|---|
| £200,000 | £11,500 | £17,100 | £10,700 |
| £300,000 | £20,000 | £28,600 | £19,950 |
| £500,000 | £40,000 | £63,350 | £42,450 |
At £500,000, a Scottish BTL costs £23,350 more in purchase tax than the identical English purchase, an effective rate of 12.7% versus 8.0%. This materially changes yield calculations for investors comparing markets across the border. Run exact figures with the Scotland LBTT calculator and Wales LTT calculator, or see the ADS calculator for the Scottish supplement in isolation.
Buying through a company? Structure it before you commit
Pre-purchase structuring can legitimately reduce stamp duty on company and portfolio buys.
Yield Impact Analysis
Stamp duty is a permanent day-one cost that reduces your effective return. Most landlords quote yield on purchase price alone, which overstates the actual return. The correct formula is: Annual Rent divided by Total Acquisition Cost, where total acquisition cost includes the purchase price, SDLT, legal fees, and any other upfront costs.
| Property price | BTL SDLT | Rent needed to recoup SDLT in 2 years (gross) | Monthly rent needed |
|---|---|---|---|
| £150,000 | £8,000 | £4,000/yr | £333 |
| £250,000 | £15,000 | £7,500/yr | £625 |
| £300,000 | £20,000 | £10,000/yr | £833 |
| £500,000 | £40,000 | £20,000/yr | £1,667 |
Yield calculation: £210,000 property at 5% gross yield
The 0.38 percentage point reduction in yield may appear modest, but it compounds: over a 10-year hold the total cost of stamp duty relative to yield grows as void periods, maintenance, and management fees also erode net returns. Use our rental yield calculator to model your specific scenario.
Total Acquisition Cost Breakdown
Stamp duty is the largest transaction cost for most landlords but not the only one. The template below shows a complete cost breakdown for a £250,000 BTL with a 25% deposit. Your own numbers will vary, but the structure applies to almost every purchase.
| Cost item | Typical range | Example (£250k) |
|---|---|---|
Deposit (25%) Standard BTL minimum; some lenders accept 20% | 20-40% | £62,500 |
Stamp Duty (SDLT) 5% surcharge on all BTL | Per rates table | £15,000 |
Solicitor / conveyancing Higher for BTL due to title checks | £1,500 to £3,000 | £2,000 |
Survey / valuation Homebuyer report recommended | £400 to £1,500 | £600 |
Mortgage arrangement fee Can be added to loan but adds interest cost | £1,000 to £2,000 | £1,500 |
Refurbishment / decoration Budget even for ‘ready to let’ properties | £0 to £20,000+ | £3,000 |
EPC / gas safety / letting fees Compliance required before first tenancy | £300 to £800 | £500 |
| Total cash required at completion | £85,100 |
In this example, stamp duty alone represents nearly 18% of total cash required on completion day. Landlords who plan around the deposit figure only and treat SDLT as an afterthought frequently find themselves scrambling for short-term finance at the worst possible moment.
Mortgage and Affordability Interaction
SDLT is a tax liability owed directly to HMRC, not part of the property's value. Mortgage lenders advance funds only against the property's worth; they will not include stamp duty in the loan amount. This means you cannot add stamp duty to a buy-to-let mortgage under normal circumstances.
You must have the full SDLT amount available as liquid funds by completion day. HMRC requires payment within 14 days of completion. There is no deferral option. When you calculate how much cash you need before making an offer, the calculation is:
Lenders also assess BTL affordability using an interest coverage ratio (ICR): typically the expected rent must be at least 125-145% of the mortgage payment at a stressed interest rate. SDLT does not affect the ICR calculation directly, but it does reduce the cash you have available for the deposit, which in turn affects your loan-to-value (LTV) ratio and therefore your mortgage rate.
Deposit vs SDLT priority: A lower deposit means a higher LTV, which means a higher mortgage rate and therefore higher monthly costs. In most cases, prioritising the deposit over SDLT results in a lower ongoing mortgage rate that saves more over the hold period than the SDLT costs. However, if you have insufficient cash for a viable deposit even after SDLT, the deal may not be viable at all.
Related guides
- Not sure whether the surcharge applies to you? The ownership test at completion below decides it.
- Buying 6+ properties or considering incorporation? See the portfolio landlord stamp duty guide.
- Building a portfolio rather than a single purchase? The multiple-property rules for portfolio landlords cover the 5% surcharge on every BTL, the 6+ bulk-transaction rule, and what MDR abolition changed.
- Analyse your rental return: rental yield calculator.
The £40,000 Threshold Rule
The additional dwelling surcharge only applies if the property being purchased costs £40,000 or more. Properties below this value are exempt from the surcharge, regardless of how many other properties you own.
The threshold is assessed on the purchase price, or on market value if the transaction is not at arm's length. The full surcharge applies from the first pound once the price reaches £40,000: there is no taper or partial exemption at the boundary.
Practical implication: very low-value properties, certain garages sold separately, and some rural outbuildings can fall below the £40,000 threshold. The vast majority of UK residential property exceeds this figure, so the exemption is rarely relevant in practice.
Caravans, mobile homes and houseboats are not "dwellings" under SDLT rules. They do not count toward the ownership test and do not attract the residential surcharge.
The Ownership Test at Completion
Whether the surcharge applies depends on how many residential properties you own at the end of the day of completion. The question is simply: after this transaction completes, will you own two or more residential properties?
- You already own a main residence and buy a BTL: you will own two properties at completion, so the surcharge applies.
- You sell your main residence before completing on the BTL: if the sale completes first, you own zero properties at the start of that day and one at the end, so no surcharge applies. Timing is critical.
- You own two properties and sell one on the same day as buying: the surcharge may or may not apply depending on the exact sequence. Take legal advice before exchange.
Worldwide property ownership counts, not just UK property. If you own a flat in Spain or an apartment in New York and buy a UK BTL, you own two or more properties at completion and the surcharge applies. Our guide to owning property abroad and the UK surcharge covers this in detail.
An inherited share also counts where your beneficial interest is 50% or more. A minor inherited share below 50% does not trigger the surcharge on its own.
Who Pays: Joint Buyers and Couples
The ownership test looks at all buyers jointly, not each buyer individually. If any one buyer in a joint purchase owns another residential property, the surcharge applies to the entire transaction.
Married couples and civil partners
Spouses and civil partners are treated as one unit. If one partner owns a property and the other buys a BTL in their sole name, the surcharge still applies, because the buying spouse is legally treated as jointly owning any property held by their partner.
Separated but not yet divorced couples can also be caught if one partner has not left the marital home before the BTL purchase completes. The legal separation date is what matters, not the physical separation.
Unmarried joint buyers
Buying jointly with a friend, unmarried partner or sibling applies the test to each buyer independently. If either owns another property, the surcharge applies to the whole purchase. This catches many unmarried couples where one already owns a flat.
Non-resident buyers
Non-UK residents pay a further 2% on top of all other rates, bringing the combined surcharge to 7% above standard rates. A non-resident buying a £300,000 BTL pays £26,000 SDLT against £20,000 for a UK-resident landlord. Residency is assessed over the 12 months before completion using a 183-day presence test.
Common First-BTL Mistakes
Assuming the surcharge only applies from a second BTL onwards
Many first-time landlords think the surcharge starts once a portfolio is established. Any purchase that takes you to two or more residential properties triggers higher rates, including the first BTL. There is no first-BTL exemption.
Thinking you can reclaim the surcharge if you later move into the BTL
The 36-month refund mechanism only covers the replacement-of-main-residence scenario. Moving into the BTL later does not trigger a refund of the original surcharge.
Buying in one spouse's name to avoid the surcharge
HMRC treats married couples and civil partners as a unit. If either spouse owns another property, the surcharge applies to a purchase by either of them, with no exception for pre-marriage acquisitions.
Not including SDLT in the yield calculation
Leaving the SDLT bill out of the cost base inflates gross yield and pushes break-even further out than the headline figure suggests. Model it explicitly.
Believing a limited company avoids the surcharge
Companies pay the same higher-rate SDLT under £500,000 as individuals, and a flat 17% above £500,000, which is usually worse. The company advantages are on rental income, not SDLT. See our company vs personal comparison.
Frequently Asked Questions
How much stamp duty do I pay on a £300,000 buy-to-let?
£20,000. The calculation is: £125,000 at 5% = £6,250, plus £125,000 at 7% = £8,750, plus the remaining £50,000 at 10% = £5,000. Total: £20,000. The effective rate is 6.7% of the purchase price. A standard homebuyer on the same property would pay £5,000. The 5% surcharge adds £15,000 to the bill.
What is the effective SDLT rate on a buy-to-let purchase?
It depends on the price. At £150,000 the effective rate is 5.3%. At £250,000 it is 6.0%. At £400,000 it is 7.5%. At £750,000 it is 8.7%. At £1,000,000 it is 9.4%. The rate rises as a larger portion of the price falls into the higher bands (10% from £250,001 and 15% from £925,001). The minimum possible effective rate on any BTL purchase is 5% (for a property priced at exactly £125,000 or below), because the lowest band is already 5%.
How long does it take to recoup the SDLT cost through rental income?
At a 5% gross yield, SDLT equals roughly 1.3 years of gross rent for a £250,000 property (£15,000 SDLT divided by £12,500 annual rent). At a 4% yield it takes about 1.6 years. At 6% it takes about 1.1 years. These are gross figures: net of void periods, management fees, and maintenance, the real payback period is longer. Higher yields and longer hold periods reduce the relative impact of the upfront SDLT cost.
What are the total upfront costs for a buy-to-let purchase?
For a £250,000 BTL with a 25% deposit, total cash required at completion is typically around £80,000 to £90,000. This includes: £62,500 deposit, £15,000 SDLT, £2,000 legal fees, £600 survey, £1,500 mortgage arrangement fee, and £3,000 to £5,000 for any refurbishment or compliance requirements. SDLT alone represents about 18% of total cash outlay and is the second-largest cost after the deposit.
Should I prioritise saving for a larger deposit or SDLT first?
You need both: SDLT cannot be added to your mortgage. In most cases, a larger deposit produces long-term savings through a lower mortgage rate that outweigh the short-term benefit of having more cash on hand. However, the practical answer is that you need the full SDLT amount as liquid cash by completion day, so if you cannot cover both the deposit you need for an acceptable mortgage rate AND the SDLT, the transaction may not be viable yet. Build both targets into your savings plan from the start.
Reviewed by
Julie White
ACASDLT Expert since 1999Stamp Duty Land Tax Specialist
ACA and Tax Adviser with a career spanning nearly four decades, specialising in SDLT planning and advisory work since 1999.