Quick Summary
- ADS is 8% of the full purchase price — charged on every penny, not just the amount above a threshold, on any additional residential property over £40,000 in Scotland
- The rate jumped from 6% to 8% on 5 December 2024 — adding £4,000 to the bill on a £200,000 property compared to the old rate
- You can reclaim ADS if you sell your previous main residence within 18 months — but miss the deadline and the charge becomes permanent
- Use our free calculator — the LBTT Calculator shows your exact ADS bill in seconds, at any price point
What is the Additional Dwelling Supplement?
If you're buying a second property in Scotland — whether that's a buy-to-let, a holiday home, or a new house before selling your old one — you'll pay a hefty surcharge on top of standard LBTT. That surcharge is the Additional Dwelling Supplement, and since December 2024 it's been set at 8%.
Quick Answer: The Additional Dwelling Supplement (ADS) is an 8% tax charged on the entire purchase price of any additional residential property in Scotland costing more than £40,000. It's paid on top of standard LBTT and applies to buy-to-let purchases, second homes, holiday lets, and situations where you buy a new home before selling your old one. You can reclaim the ADS if you sell your previous main residence within 18 months. Use our LBTT Calculator to see the full cost.
How ADS is calculated
This is where most people get caught out. ADS is a flat percentage on the entire purchase price — not a progressive tax like standard LBTT.
If you buy a £250,000 second property, the ADS is:
£250,000 x 8% = £20,000
That's on top of your standard LBTT bill of £2,100, making your total property tax £22,100. The ADS alone accounts for over 90% of the tax on this purchase.
There's no nil rate band, no progressive bands, and no first-time buyer relief. If the property costs more than £40,000, the full 8% applies to the whole price from the first pound.
The December 2024 increase: 6% to 8%
The ADS rate increased from 6% to 8% on 5 December 2024. If you exchanged missives before that date but completed after it, you may still qualify for the old 6% rate — check with your solicitor immediately.
The Scottish Government raised the ADS to 8% as part of its December 2024 budget, making Scotland's additional property surcharge the highest in the UK. The increase added thousands to every purchase:
| Purchase price | ADS at 6% (old rate) | ADS at 8% (current) | Extra cost |
|---|---|---|---|
| £100,000 | £6,000 | £8,000 | £2,000 |
| £200,000 | £12,000 | £16,000 | £4,000 |
| £300,000 | £18,000 | £24,000 | £6,000 |
| £400,000 | £24,000 | £32,000 | £8,000 |
| £500,000 | £30,000 | £40,000 | £10,000 |
At every price point, the increase adds a meaningful sum to your upfront costs. On a £300,000 property, that's an extra £6,000 that wasn't in anyone's budget six months earlier.
ADS at common price points: the full picture
Here's what your total LBTT + ADS bill looks like at typical Scottish property prices in 2025/26:
| Purchase price | Standard LBTT | ADS (8%) | Total LBTT + ADS | Effective tax rate |
|---|---|---|---|---|
| £100,000 | £0 | £8,000 | £8,000 | 8.00% |
| £150,000 | £100 | £12,000 | £12,100 | 8.07% |
| £200,000 | £1,100 | £16,000 | £17,100 | 8.55% |
| £250,000 | £2,100 | £20,000 | £22,100 | 8.84% |
| £300,000 | £4,600 | £24,000 | £28,600 | 9.53% |
| £350,000 | £9,600 | £28,000 | £37,600 | 10.74% |
| £400,000 | £14,600 | £32,000 | £46,600 | 11.65% |
| £500,000 | £24,600 | £40,000 | £64,600 | 12.92% |
The effective tax rate climbs steeply with price. A £100,000 second property costs 8% in total tax, but a £500,000 second property costs nearly 13%. That's because the standard LBTT bands add progressively more tax on top of the flat 8% ADS.
Worked example: £275,000 buy-to-let in Edinburgh
You're buying a rental property for £275,000 and already own your own home:
Standard LBTT:
- First £145,000 at 0% = £0
- Next £105,000 (£145,001 to £250,000) at 2% = £2,100
- Next £25,000 (£250,001 to £275,000) at 5% = £1,250
- LBTT subtotal = £3,350
ADS:
- £275,000 x 8% = £22,000
Total tax bill = £25,350 (effective rate: 9.22%)
That £22,000 ADS needs to come from your deposit funds on the day of settlement. It cannot be added to your mortgage.
Try it yourself
Enter your purchase price to see a full band-by-band LBTT breakdown plus ADS — for standard, first-time, or additional property purchases.
Open LBTT CalculatorNo sign-up required.
When ADS applies
ADS applies in any situation where the buyer will own more than one residential property after the purchase and the property costs more than £40,000. The most common scenarios:
Buy-to-let purchases
You own your home and buy a rental property. ADS applies to the full purchase price of the rental property. This is the most straightforward case.
Second homes and holiday lets
Buying a holiday cottage in the Highlands while keeping your main residence in Glasgow? ADS applies. It doesn't matter that you're not renting it out — owning two residential properties triggers the supplement.
Buying before selling your old home
This catches many people off guard. If you buy a new main residence before selling your current one, you own two properties at the point of purchase, so ADS applies. You can reclaim it later if you sell the old property within 18 months (see the reclaim section below), but you must pay the full ADS upfront on settlement day.
Joint purchases where one partner already owns property
If you're buying with someone who already owns a residential property — anywhere in the world — ADS applies to the whole purchase. It doesn't matter that you personally don't own property. If either buyer has an existing property interest, the ADS is triggered.
ADS applies based on ownership of residential property worldwide, not just in Scotland or the UK. If you own a flat in Spain, a villa in France, or an apartment in New York, that counts as an existing property for ADS purposes.
Properties bought through companies or trusts
ADS applies to purchases by companies and trusts as well as individuals. Setting up a limited company to buy a second property does not avoid the ADS.
When ADS does NOT apply
There are several situations where you won't pay ADS, even if you already own property:
Replacing your only or main residence
If you sell your previous main residence on or before the day you buy your new one, ADS does not apply. You're replacing your home, not adding to your property portfolio. If you buy first and sell later, you pay ADS upfront but can reclaim it (see below).
Properties under £40,000
ADS only applies to purchases over £40,000. Below that threshold, no supplement is charged regardless of how many properties you own. In practice, very few habitable residential properties in Scotland fall below this level.
Inherited property
If you inherit a property, there's no purchase transaction, so no LBTT or ADS is due. However, if you later buy another property while still owning the inherited one, ADS will apply to that new purchase.
Separation and divorce
When property is transferred between spouses or civil partners as part of a separation agreement, the transfer is usually exempt from LBTT and ADS.
Properties that are not residential
ADS only applies to residential property. If you're buying commercial property, agricultural land, or a mixed-use property that qualifies for non-residential LBTT rates, the supplement doesn't apply.
How to reclaim ADS
The most common reclaim scenario is when you buy a new main residence before selling your old one. Revenue Scotland allows you to reclaim the ADS in full if you meet two conditions:
Condition 1: You sell your previous main residence within 18 months of buying the new one.
Condition 2: You submit the reclaim application to Revenue Scotland within 12 months of selling the old property.
Reclaim worked example
- 1 March 2026: You buy a new home for £300,000, paying £28,600 in LBTT + ADS (£4,600 LBTT + £24,000 ADS)
- 1 September 2026: You sell your old home (within 18 months of purchase — deadline is 1 September 2027)
- You now have until 1 September 2027 to submit the reclaim to Revenue Scotland
- Refund: £24,000 — the full ADS amount is returned to you
Set a calendar reminder for your reclaim deadline. Revenue Scotland will not chase you to claim your refund. If you miss the 12-month window after selling, the £24,000 (or whatever your ADS was) is gone permanently.
What if my old home doesn't sell in time?
If 18 months pass and you still own the old property, the ADS becomes permanent. There is no extension, no appeal on grounds of a slow market, and no discretionary relief. The 18-month clock starts on the effective date of the new purchase.
If your property market is slow, consider whether you can complete the sale of the old home before buying the new one — even if that means a short-term rental in between. Avoiding £20,000+ in permanent ADS may be worth a few months of temporary accommodation.
ADS on joint purchases
Joint purchases follow a simple rule: if either buyer already owns a residential property, ADS applies to the whole purchase.
Scenario 1: First-time buyer purchasing with an existing homeowner
Alice has never owned property. She's buying a flat jointly with Ben, who owns a house. ADS applies because Ben already owns residential property. Alice's first-time buyer status is irrelevant for ADS purposes. They also lose first-time buyer LBTT relief because both buyers must qualify.
Scenario 2: Married couple where one spouse owns a property abroad
Claire and David are buying their first Scottish home together. David owns an apartment in Portugal. ADS applies to the full purchase price because David already owns a residential property — even though it's overseas and even though Claire doesn't own anything.
Scenario 3: Two first-time buyers
Emma and Fiona are both first-time buyers with no existing property. ADS does not apply. They also qualify for first-time buyer LBTT relief (nil rate band up to £175,000).
Try it yourself
Check your ADS liability instantly — enter your purchase price and select 'additional property' to see the full breakdown.
Open LBTT CalculatorNo sign-up required.
Scotland vs England: additional property surcharge comparison
Scotland's 8% ADS is significantly higher than England's 5% Stamp Duty surcharge on additional dwellings. Here's how the total tax bills compare:
| Purchase price | Scotland (LBTT + 8% ADS) | England (SDLT + 5% surcharge) | Scotland pays more by |
|---|---|---|---|
| £100,000 | £8,000 | £5,000 | £3,000 |
| £150,000 | £12,100 | £7,500 | £4,600 |
| £200,000 | £17,100 | £10,000 | £7,100 |
| £250,000 | £22,100 | £12,500 | £9,600 |
| £300,000 | £28,600 | £17,500 | £11,100 |
| £400,000 | £46,600 | £32,500 | £14,100 |
| £500,000 | £64,600 | £47,500 | £17,100 |
At every price point, buying an additional property in Scotland costs thousands more than in England. The gap comes from two places: the higher ADS rate (8% vs 5%) and the higher standard LBTT rates at most price points.
On a £300,000 second property, a Scottish buyer pays £11,100 more than an English buyer — that's an extra year of rental income on many buy-to-let properties, wiped out before you even get the keys.
Why the gap matters for investors
This cost differential is one reason Scotland has seen less buy-to-let investment growth than England. When your upfront tax bill is 60% higher than a comparable English purchase, the numbers need to stack up on rental yield. Scottish buy-to-let investors need higher gross yields to achieve the same returns, which pushes investment away from lower-yielding areas like Edinburgh's New Town and towards higher-yielding markets in Dundee, Aberdeen, and parts of Glasgow.
Common mistakes with ADS
1. Forgetting ADS in your purchase budget
The biggest mistake is treating LBTT as the only property tax. On a £250,000 buy-to-let, standard LBTT is £2,100 — but add ADS and the bill jumps to £22,100. That's a tenfold increase. Budget for the full amount from day one or you'll face a nasty surprise at settlement.
2. Missing the reclaim deadline
If you've paid ADS because you bought before selling, you have 18 months to sell the old property and then 12 months after the sale to claim the refund. Both deadlines are hard — no extensions, no exceptions. Set multiple calendar reminders and make sure your solicitor has the reclaim on their task list.
3. Assuming ADS is charged on the excess only
Standard LBTT is progressive — you only pay higher rates on the portion above each threshold. ADS works completely differently. It's 8% on the full purchase price from the first pound. A £300,000 second property pays £24,000 in ADS, not 8% on the amount above some threshold. This catches people who are familiar with how LBTT bands work and assume ADS follows the same logic.
4. Not considering the ADS impact on investment returns
A £16,000 ADS bill on a £200,000 buy-to-let means your true capital deployed is £216,000+ (including LBTT and other purchase costs). If you're calculating your rental yield on £200,000, you're overstating your returns. Always calculate yield on total money in, not just the property price.
5. Thinking a limited company avoids ADS
Some investors believe that buying through a company structure eliminates the ADS. It doesn't. ADS applies to purchases by companies, trusts, and partnerships just as it applies to individuals. A limited company structure may save on income tax on rental profits, but the upfront ADS is identical.
Frequently Asked Questions
Is ADS charged on the full purchase price or just the amount above a threshold?
ADS is charged on the full purchase price — every penny from the first pound upward. There is no nil rate band or threshold within the ADS calculation itself (though properties under £40,000 are exempt from ADS entirely). This is fundamentally different from standard LBTT, which uses progressive bands. On a £250,000 second property, ADS is £250,000 x 8% = £20,000.
Can I reclaim ADS if I sell my previous home after buying a new one?
Yes, provided you sell your previous main residence within 18 months of buying the new property and submit the reclaim to Revenue Scotland within 12 months of the sale date. The full ADS amount is refunded. Both deadlines are strict with no extensions available.
Does ADS apply if I own property outside the UK?
Yes. ADS applies based on ownership of residential property anywhere in the world. If you own a flat in Spain, an apartment in Dubai, or a house in Australia, that counts as an existing residential property. When you buy an additional property in Scotland, the ADS is triggered regardless of where your other property is located.
What happens if I inherit a property and then buy another one?
Inheriting a property does not trigger ADS (there's no purchase transaction). However, if you still own the inherited property when you buy another residential property in Scotland, the ADS will apply to that new purchase because you'll own more than one residential property. You may want to sell the inherited property before buying, or budget for the ADS.
How does Scotland's 8% ADS compare to the rest of the UK?
Scotland's 8% is the highest additional property surcharge in the UK. England and Northern Ireland charge 5% on additional dwellings. Wales charges 4% through its Land Transaction Tax (LTT) higher rates. On a £250,000 second property, Scotland charges £20,000, England charges £12,500, and Wales charges £10,000. The gap is substantial and growing — Scotland's rate has doubled from 4% when ADS was introduced in 2016.
Related Articles
- LBTT Explained: Scotland's Property Tax — full guide to LBTT bands, first-time buyer relief, and how the progressive system works
- Buy-to-Let Tax in Scotland — LBTT, ADS, income tax on rental profit, and net yield calculations
- Scotland vs England Tax Comparison — how property tax and income tax compare across the border
- LBTT Calculator — calculate your exact LBTT and ADS bill in seconds
- Scottish Income Tax Rates 2025/26 — understand the 6-band system that taxes your rental income
This article is for informational purposes only and does not constitute financial, tax, or legal advice. Tax rates and thresholds can change — always verify current rates with Revenue Scotland, HMRC, or mygov.scot, and speak to a qualified financial adviser for advice specific to your circumstances.
Sources: Revenue Scotland — Additional Dwelling Supplement, Revenue Scotland — LBTT rates and bands, Scottish Government — ADS rate change December 2024, HMRC — Stamp Duty Land Tax surcharge, mygov.scot — Land and Buildings Transaction Tax