What this calculator does

Takes purchase price and buyer type (standard or additional dwelling). Returns Land Transaction Tax (LTT) due, sliced across the bands.

The formula

Standard residential rates (2025/26):
  £0 – £225,000:            0%
  £225,001 – £400,000:      6%
  £400,001 – £750,000:      7.5%
  £750,001 – £1,500,000:   10%
  Above £1,500,000:         12%

Higher residential rates (additional properties, e.g. buy-to-let):
  Each band rate + 4 percentage points

Tax is calculated on slices — each band applies only to the
portion of the price within that band.

Assumptions

  • Residential property only — non-residential LTT uses different bands.
  • Higher rates apply to the full price in the same slice structure as standard rates, with 4 percentage points added to each band.
  • Wales-only — use the Stamp Duty (England) or Scotland LBTT calculators for other nations.

Data sources

Figure Value used Source Last checked
0% band £0–£225,000 Welsh Revenue Authority — LTT rates May 2026
6% band £225,001–£400,000 Welsh Revenue Authority — LTT rates May 2026
7.5% band £400,001–£750,000 Welsh Revenue Authority — LTT rates May 2026
10% band £750,001–£1.5m Welsh Revenue Authority — LTT rates May 2026
12% band Above £1.5m Welsh Revenue Authority — LTT rates May 2026
Higher rate surcharge +4% per band Welsh Revenue Authority — LTT higher rates May 2026

Limitations

  • Wales only — does not apply to England or Scotland.
  • Does not model non-residential LTT.
  • Does not model transitional relief for linked transactions.

Worked example

Standard residential purchase, £350,000.

0%  on £0–£225,000       = £0
6%  on £225,001–£350,000 = £125,000 × 6% = £7,500

Total LTT: £7,500

Changelog

Date Change
May 2026 Initial publication

Use the Wales LTT Calculator →