Rates read 22 October 2026 from HM Revenue & Customs
Shared Ownership Stamp Duty
With a market value election you pay SDLT on the whole market value of the property, even though you are only buying a share — and then nothing more when you buy further shares later.
Work it out
Enter the amount. Commas are fine.
The bands
| Portion of the price | Rate |
|---|---|
| £0 – £125,000 | 0% |
| £125,001 – £250,000 | 2% |
| £250,001 – £925,000 | 5% |
| £925,001 – £1,500,000 | 10% |
| Above £1,500,000 | 12% |
The choice you are making
GOV.UK sets out two ways to pay: a one-off payment on the market value of the property (the market value election), or paying SDLT in stages as you buy each share. The election usually costs more up front and nothing later; staged payments spread the tax but are calculated on each share as you buy it.
The worked example
You pay £140,000 for a 50% share of a property worth £280,000. SDLT is worked out on £280,000: 0% on the first £125,000, 2% on the next £125,000 (£2,500), 5% on the final £30,000 (£1,500) — £4,000.
First-time buyers
If you are a first-time buyer buying your first share, GOV.UK says you may be able to claim first-time buyer relief at that point. It is claimed on the return, not automatically.
Source: HM Revenue & Customs — Shared ownership property, read 22 October 2026. England and Northern Ireland. The calculator below applies standard residential rates to the market value — it does not apply first-time buyer relief.