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HomeHousing & PropertyUK Buy-to-Let & Additional Property Stamp Duty (SDLT) Surcharge Calculator 2026/27
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UK Buy-to-Let & Additional Property Stamp Duty (SDLT) Surcharge Calculator 2026/27

Calculate Stamp Duty Land Tax (SDLT) liabilities for UK Buy-to-Let properties and second homes, including the 5% additional property surcharge.

Buy-to-Let Stamp Duty Details

Property Purchase Price (£)
£
Purchase Purpose & Buyer Status
UK Residency Status
Total Stamp Duty (SDLT) Payable
£15,500.00
Effective Tax Rate: 5.54%

📊 Stamp Duty (SDLT) Breakdown

Standard Base SDLT Tax Share £1,500.00
5% Additional Property Surcharge Share £14,000.00
Effective Stamp Duty Tax Rate 5.54%
Total Stamp Duty (SDLT) Payable £15,500.00

When purchasing a Buy-to-Let (BTL) property or a second home in England or Northern Ireland, buyers must pay higher rates of Stamp Duty Land Tax (SDLT) compared to moving into a primary main residence.

Under current HMRC rules, purchasing an additional residential property valued over £40,000 incurs a mandatory 5% Additional Property SDLT Surcharge applied on top of standard residential SDLT tax bands across the entire purchase price.

⚙️ Rules & Thresholds

  • 5% Additional Property Surcharge: Applied across ALL price bands for buy-to-let investors, limited companies, and second home buyers.
  • 2026/27 Buy-to-Let SDLT Tax Bands (England & Northern Ireland):
    • £0 – £125,000: 5% (0% base + 5% surcharge).
    • £125,001 – £250,000: 7% (2% base + 5% surcharge).
    • £250,001 – £925,000: 10% (5% base + 5% surcharge).
    • £925,001 – £1,500,000: 15% (10% base + 5% surcharge).
    • Over £1,500,000: 17% (12% base + 5% surcharge).
  • Non-UK Resident Surcharge: Non-UK residents buying UK residential property pay an extra 2% surcharge on top of the above rates (reaching up to 19% maximum SDLT).
  • 36-Month Main Residence Refund Rule: If you buy a new main home before selling your old main home, you pay the 5% surcharge upfront, but can claim a 100% refund of the surcharge from HMRC if you sell your previous main residence within 36 months.

📊 Practical Examples

Example 1: Buying a £280,000 Buy-to-Let Property in England as a UK Resident
  • Purchase Price: £280,000
  • Status: Buy-to-Let Investment (5% Surcharge Applies)
  • First £125,000 Band (5%): £125,000 × 5% = £6,250.00
  • £125,001 – £250,000 Band (7%): £125,000 × 7% = £8,750.00
  • £250,001 – £280,000 Band (10%): £30,000 × 10% = £3,000.00

Standard Base SDLT: £4,000.00 | 5% Additional Surcharge: £14,000.00
Total SDLT Payable: **£18,000.00** (Effective Tax Rate: **6.43%**).

Total BTL SDLT Due: £18,000.00 (Base SDLT: £4,000 | Surcharge: £14,000)

📑 Common Pitfalls

  • Purchasing via a Limited Company to Avoid Surcharge: Limited companies purchasing residential property pay the exact same 5% SDLT surcharge as individual buyers.
  • Forgetting Married Couple Rules: Married couples and civil partners are treated by HMRC as a single unit; if one spouse already owns a property, buying another property in the second spouse’s sole name still triggers the 5% surcharge.
  • Missing the 36-Month Refund Deadline: Failing to complete the sale of your previous main home within 36 months forfeits your right to claim a surcharge refund from HMRC.

❓ Frequently Asked Questions (FAQ)

In England and Northern Ireland, buy-to-let properties and second homes are subject to a 5% SDLT surcharge on top of standard residential Stamp Duty rates. In Scotland, the Additional Dwelling Supplement (ADS) rate is 6%, while in Wales the Land Transaction Tax (LTT) higher rate starts at 4%.

If you paid the 5% SDLT surcharge because you bought a new main home before selling your old one, you can claim a full refund of the surcharge from HMRC if you sell your previous main residence within 36 months of buying the new property.

Limited companies pay the standard residential SDLT rates plus the 5% additional property surcharge when buying residential rental properties. For properties valued over £500,000 bought by companies for non-rental personal use, a flat 15% SDLT rate applies.

No. First-Time Buyer SDLT relief applies ONLY to individuals purchasing a property intended to be used as their main residence. If a first-time buyer purchases a property to let out to tenants, standard BTL Stamp Duty rates apply.