Legal Support in Calculating and Paying Stamp Duty Land Tax (SDLT)
Legal support in calculating and paying Stamp Duty Land Tax (SDLT) is relevant for buyers of residential and commercial property, investors, companies acquiring assets within the United Kingdom, and individuals transferring property within the family or by inheritance.

Legal assistance helps avoid errors in calculation, penalties for late payment, and enables the use of available tax reliefs.
SDLT Calculation When Purchasing Property: How to Avoid Overpayment and Penalties
The amount of tax depends on the buyer’s status, the value of the asset, the number of properties acquired, and whether additional property is already owned. Errors in SDLT calculation may lead to overpayment or financial penalties from HMRC. That’s why it’s essential to involve a solicitor who ensures accurate calculations and timely submission of the return.
Solicitor’s actions:
- verifying the property value and assessing applicable SDLT rates;
- evaluating eligibility for reliefs (e.g. First Time Buyer Relief, Multiple Dwellings Relief);
- calculating the final tax amount with reliefs applied;
- preparing and submitting the SDLT return to HMRC;
- confirming payment and retaining proof of submission and payment.

Outcome: the client receives a correctly calculated tax amount, a timely filed return, protection from penalties, and full use of available reliefs.
SDLT Advice for Property Transfers Within the Family or by Inheritance
Property transfers do not always require SDLT payment, but in many cases — such as share transfers, mortgage arrangements or trust structures — a tax liability may arise. Proper assessment helps avoid unexpected costs.
Solicitor’s actions:
- analysing the legal basis of the transfer (gift, inheritance, trust deed);
- assessing SDLT obligations in each specific case;
- providing an opinion on whether SDLT is payable;
- explaining risks and tax optimisation options;
- preparing a legally sound supporting document package.

Outcome: the client gains a clear understanding of SDLT obligations and legally correct transaction documentation with minimised tax risks.
Support for Transactions Subject to Special SDLT Rules (Additional Property, Companies, Non-Residents)
Certain transactions — such as buying a second property, purchasing via a company or involving a non-resident — are subject to additional provisions that increase SDLT rates. Misunderstanding these rules leads to violations and penalties.
Solicitor’s actions:
- determining the buyer’s status (individual or legal entity, resident or non-resident, owner of other property);
- analysing applicability of the additional SDLT rate (3% surcharge);
- checking conditions that allow exemption from surcharges;
- developing a strategy to reduce tax burden;
- preparing the SDLT return considering the buyer’s special status.

Outcome: the client receives full tax transparency for the transaction and confidence in compliance with all legal requirements.
ConclusionLegal assistance in calculating and paying Stamp Duty Land Tax (SDLT) helps avoid tax errors, ensures timely fulfilment of obligations, and enables use of all available reliefs. The Consultant legal marketplace team provides professional support for individuals, companies and investors in both standard and complex cases, ensuring reliability and tax efficiency in every transaction.