Understanding Stamp Duty Land Tax (SDLT)

Stamp Duty Land Tax (SDLT) is a tax paid when purchasing property or land in England and Northern Ireland. It replaced the old “stamp duty” system in 2003 and is now a key cost to consider when buying a home or investment property.

Unlike the original system, SDLT no longer requires a physical stamp. Instead, buyers must submit a return and pay any tax due to HM Revenue & Customs (HMRC) within the required timeframe.

How SDLT Works Today

SDLT is calculated using a progressive (tiered) system, meaning different portions of the property price are taxed at different rates—rather than a single rate applied to the entire amount.

For standard residential purchases, the current thresholds are:

⦠Up to £250,000 — 0%

⦠£250,001 to £925,000 — 5%

⦠£925,001 to £1.5 million — 10%

⦠Over £1.5 million — 12%

This system is considered fairer than the previous “slab” approach, as buyers only pay higher rates only on the portion of the property price within each band.

First-Time Buyer Relief

First-time buyers may benefit from reduced SDLT rates:

⦠Up to £425,000 — 0%

⦠£425,001 to £625,000 — 5%

This relief is designed to make it easier for new buyers to enter the property market.

Additional Property Surcharge

If you are purchasing an additional property (such as a buy-to-let or second home), you will usually pay an extra 3% surcharge on top of the standard SDLT rates.

SDLT for Non-UK Residents

Non-UK residents purchasing property in England or Northern Ireland are typically subject to an additional 2% SDLT surcharge on top of the standard rates.

This means:

⦠The 2% surcharge applies to most residential property purchases by non-residents 

⦠It is added to any existing SDLT liability, including the 3% surcharge for additional properties (if applicable) 

Who is Considered a Non-Resident?

For SDLT purposes, residency is determined based on the amount of time you spend in the UK.

In general:

⦠You may be classed as a non-UK resident if you spend fewer than 183 days in the UK during the 12 months before your purchase 

The rules can be complex, especially for:

⦠Joint buyers (where one party may be UK resident and the other is not) 

⦠UK nationals living abroad 

⦠Individuals with mixed residency status 

Can the Surcharge Be Reclaimed?

In some cases, the additional 2% surcharge may be refundable.

For example:

⦠If you purchase as a non-resident but later meet the UK residency requirements within a specified timeframe, you may be able to reclaim the surcharge 

SDLT on Leasehold Properties

SDLT can also apply to leasehold properties. In some cases, tax may be charged on:

⦠The purchase price of the lease 

⦠The net present value (NPV) of the rent over the lease term 

The rules can be more complex, so it’s important to understand your specific situation before proceeding.

Why SDLT Matters for Remortgaging

In most cases, SDLT is not payable when remortgaging, as you are not purchasing a new property.

However, SDLT may apply if:

⦠You are transferring ownership (e.g. adding a partner to the mortgage) 

⦠You are buying out another party 

⦠There is a change in ownership involving consideration (payment) 

Planning for SDLT Costs

When purchasing property, SDLT should always be factored into your overall budget alongside:

⦠Deposit requirements 

⦠Legal fees 

⦠Valuation and survey costs 

⦠Mortgage arrangement fees 

Understanding these costs in advance can help you avoid unexpected financial pressure during the buying process.

Important Considerations

SDLT rules and thresholds can change, and the amount you pay will depend on your individual circumstances.

For the most accurate and up-to-date information, it’s always advisable to:

⦠Check official HMRC guidance 

⦠Speak with a qualified mortgage adviser or solicitor