UK Stamp Duty Calculator

Use this calculator to estimate UK stamp duty on a property purchase.

What this calculator does

The UK stamp duty calculator estimates Stamp Duty Land Tax on a residential property purchase in England or Northern Ireland.

It uses:

• property purchase price
• buyer type
• first-time buyer assumptions
• additional property surcharge assumptions

This gives you an estimated stamp duty amount and total upfront purchase cost impact.

Stamp Duty Formula

Stamp Duty = Purchase Price Applied Across SDLT Bands

Where:

• Purchase price is the property price agreed with the seller
• SDLT bands apply progressively to slices of the price
• Surcharges may apply to additional homes or certain buyer circumstances

Example calculation

If a property purchase crosses more than one SDLT band, only the part of the price inside each band is charged at that band's rate.

This means stamp duty is progressive. A higher purchase price does not usually cause the whole property value to be taxed at the highest rate reached.

When to use this calculator

Use this calculator when you want to:

• estimate SDLT before making an offer
• compare total cash needed across purchase prices
• model the impact of first-time buyer relief
• estimate the surcharge for an additional property

For wider property purchase costs, use the Property Transfer Cost Calculator.

FAQs

Does this apply across the whole UK?

No. SDLT applies in England and Northern Ireland. Scotland and Wales use different property transaction taxes.

Is stamp duty charged on the whole price at one rate?

Usually no. SDLT is applied progressively across price bands, so each slice of the purchase price can be taxed at a different rate.