Free · 60 seconds · Pre-purchase

Stamp Duty + BTL Tax Calculator

Work out exactly what a buy-to-let purchase will cost — stamp duty (including the 5% additional dwelling surcharge), Section 24 impact for personal ownership, annual rental tax bill, and total upfront cash. Numbers based on current UK rates.

Enter the purchase details and your tax position. We will calculate your full SDLT (with the 5% BTL surcharge), Section 24 impact for personal ownership, annual rental tax bill, and total upfront cash needed.

The purchase

Property address Purchase price (£) Expected monthly rent (£) Deposit (£)

This will be my only property — I do not own any other (skips the 5% additional property surcharge) I am a first-time buyer (I have never owned a property anywhere in the world). Applies the FTB SDLT relief if the purchase is ≤£500,000.

Tax position

Ownership structure Income tax bracket Annual mortgage interest (£) Other annual costs (£)

Limited company ownership avoids Section 24 (full mortgage interest deduction) but pays 25% corporation tax. The right structure depends on your full picture.

Get your personalised report

We will email you the full breakdown. Required to see your results.

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Yes — I would like a free 20-minute call to discuss structure options that could reduce these costs