Stamp Duty Calculator | How Your Stamp Duty Changes in 2025

What is Stamp Duty?

Stamp Duty Land Tax (SDLT) is a tax paid on property purchases in England and Northern Ireland. The amount depends on the price of the property and the buyer’s circumstances, such as whether they are a first-time buyer or purchasing an additional property.

You can use our stamp duty calculator below to calculate the stamp duty rates you can expect on your chosen property.

Stamp Duty Changes to Expect in 2025

From the 1^st of April 2025, there were significant changes to the stamp duty threshold, including adjustments specifically affecting first time buyers.

What Stamp Duty Changes Will First Time Buyers Now Face?

First-time buyers previously benefitted from Stamp Duty relief on properties up to £425,000 for purchases under £625,000.

This has now decreased to £300,000 for purchases under £500,000.

For example:

• For a property that costs £350,000 – whilst this would have been previously below the stamp duty threshold – as of April 2025, you’ll now have to pay £2500 in stamp duty for it.
• With a property priced at £520,000 – whilst before you’d have paid just £4750 in stamp duty for it - you can now expect to pay £16,000.

What Stamp Duty Changes Will You Face if You’ve Already Been a Homeowner?

If the property you’re buying is replacing your main residence and has already been sold, the below rates will now apply.

The Stamp Duty Threshold Will Also Change if You’re Buying a Secondary Property

If you purchase a new residential property that results in you owning more than one, you will now need to pay an additional 5% on top of the previous stamp duty rates.