How much stamp duty do I pay on a £425,000 house?

A standard home mover pays £11,250 in Stamp Duty (an effective rate of 2.65%). A first-time buyer pays £6,250, while a buy-to-let or second home buyer pays £32,500 (7.65%).

Do first-time buyers pay stamp duty on £425,000?

First-time buyers pay £6,250 under First-Time Buyer Relief, saving £5,000 compared to standard purchasers.

When must stamp duty on £425,000 be paid?

SDLT must be filed and paid to HMRC within 14 days of property completion. Typically, your conveyancing solicitor manages this payment.

Stamp Duty on £425,000 House (2026/27)

Band-by-Band Calculation for £425,000

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 £925,000	5%	£175,000	£8,750
Total Standard SDLT Liability			£11,250

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£425,000 Mortgage & Affordability Context

Estimated 10% Deposit

£42,500

Upfront cash required

Est. Monthly Mortgage

£2,126/mo

At ~4.5% over 25 years

Household Income Needed

~£85,000/yr

At typical 4.5x lending cap (Take-Home Pay Guide)

Upfront Total Cash

£56,749

10% Deposit + SDLT + Legal Fees

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