In Scotland, the purchase of an additional residential property—specifically a buyer’s second home or a buy-to-let investment—triggers a significant upfront tax known as the Additional Dwelling Supplement (ADS). This is Scotland’s equivalent to the surcharge applied in the rest of the UK, and it is a critical component of the Land and Buildings Transaction Tax (LBTT), which replaced Stamp Duty in Scotland.
The Core Rule: The 4% Additional Dwelling Supplement
The fundamental principle is that if you are purchasing a residential property in Scotland for £40,000 or more, and at the end of the transaction you will own more than one residential property anywhere in the world, you must pay the standard LBTT rates plus an additional 4% on the entire purchase price.
This creates a tiered tax structure for additional properties:
| Purchase Price Band | Standard LBTT Rate | LBTT Rate with 4% ADS |
|---|---|---|
| Up to £145,000 | 0% | 4% |
| £145,001 to £250,000 | 2% | 6% |
| £250,001 to £325,000 | 5% | 9% |
| £325,001 to £750,000 | 10% | 14% |
| Over £750,000 | 12% | 16% |
Illustrative Calculation:
For the purchase of a £400,000 buy-to-let flat in Glasgow (where the buyer already owns a home), the LBTT with ADS is calculated as follows:
text{LBTT with ADS} = (text{£145,000} times 0.04) + (text{£105,000} times 0.06) + (text{£75,000} times 0.09) + (text{£75,000} times 0.14) text{LBTT with ADS} = text{£5,800} + text{£6,300} + text{£6,750} + text{£10,500} = text{£29,350}For comparison, if this were a main residence, the LBTT would be:
(text{£145,000} times 0.00) + (text{£105,000} times 0.02) + (text{£75,000} times 0.05) + (text{£75,000} times 0.10) = text{£13,350}The 4% ADS adds £16,000 to the tax bill in this example.
What Defines an “Additional Dwelling”?
The ADS applies in these key scenarios:
- Buying a Second Home: You own your main residence and are buying a holiday home or a pied-Ã -terre.
- Buying a Buy-to-Let Property: You are purchasing a property to rent out, while retaining ownership of your main home.
- Buying Before Selling: You purchase a new main residence before selling your old one. At the point of purchase, you own two properties, so the ADS is payable on the new purchase.
Reclaiming the Additional Dwelling Supplement
There is a crucial mechanism for reclaiming the ADS if the purchase was for a new main residence. You can apply for a full refund of the 4% supplement if you sell your previous main residence within 18 months of the purchase date of the new property.
This 18-month period consists of:
- The 12 months preceding the purchase of the new dwelling.
- The 6 months following the purchase.
You must apply for the refund within 12 months of the purchase date or within 12 months of the date you file the LBTT return, whichever is later.
Other Tax Considerations for Multiple Properties in Scotland
- Council Tax: Local councils in Scotland can (and many do) charge a double Council Tax rate on second homes, effectively a 100% premium. This is a recurring annual cost.
- Landlord Registration: If you rent out a property, you must be registered as a landlord with the local council, which involves a fee and fit-and-proper-person checks.
- Short-Term Let Licensing: In many areas, properties used for short-term lets (e.g., Airbnb) now require a separate license from the local authority, adding another layer of cost and regulation.
In summary, the “3-plus property tax” in Scotland is the 4% Additional Dwelling Supplement levied on top of standard LBTT rates. It is a powerful fiscal tool that significantly increases the cost of acquiring a second property, whether for personal use or as an investment. The ability to reclaim it is tightly defined, primarily for those moving main residence. Any purchaser of an additional property in Scotland must factor this substantial upfront cost, as well as higher ongoing Council Tax, into their financial planning.
