How much stamp duty do I pay on a £800,000 house?

A standard home mover pays £30,000 in Stamp Duty (3.75% effective rate). Because the purchase price exceeds £500,000, first-time buyers pay the standard rate of £30,000.

How much is buy-to-let stamp duty on £800,000?

For additional properties and buy-to-let, a 5% surcharge applies across all bands, making the total SDLT £70,000.

When must stamp duty on £800,000 be paid?

SDLT must be filed and paid to HMRC within 14 days of property completion.

Stamp Duty on £800,000 House (2026/27)

Stamp Duty on a £800,000 House

Standard home buyers pay £30,000 SDLT on a £800,000 property in England and Northern Ireland (3.75% effective rate).

Standard Stamp Duty

£30,000

Effective rate: 3.75%

First-Time Buyer

£30,000

No FTB relief (over £500k)

Second Home / BTL

£70,000

Includes +5% surcharge (8.75%)

Non-UK Resident

£46,000

Includes +2% levy (5.75%)

Band-by-Band Calculation for £800,000

SDLT is calculated in stepped progressive slices across each statutory rate band:

SDLT Band	Statutory Rate	Taxable Portion	SDLT Due
Up to £125,000	0%	£125,000	£0
£125,001 to £250,000	2%	£125,000	£2,500
£250,001 to £800,000	5%	£550,000	£27,500
Total Standard SDLT Liability			£30,000

Customise in Full Stamp Duty Calculator →

£800,000 Mortgage & Affordability Context

Estimated 10% Deposit

£80,000

Upfront cash required

Est. Monthly Mortgage

£3,584/mo

At ~4.5% over 25 years

Household Income Needed

~£160,000/yr

At typical 4.5x lending cap

Upfront Total Cash

£110,000

10% Deposit + Standard SDLT

Compare Other Price Points

£250k • £300k • £350k • £400k • £425k FTB • £450k • £500k • £600k • £700k • £750k • £800k • £900k • £1m • £1.25m • £1.5m