Buying Multiple Properties on the Same Day: Post-MDR Rules

Current Rules: Post-June 2024

Since 1 June 2024, Multiple Dwellings Relief has been abolished for the vast majority of residential transactions. Where a buyer purchases two or more dwellings simultaneously, SDLT is calculated on each property independently at its own consideration. This is the default position unless a specific exception applies (such as the transition relief for pre-March 2024 exchange contracts).

However, the individual taxation of each property does not mean the purchases are treated as entirely disconnected events. The linked transactions analysis under s108 FA2003 still applies. If the simultaneous purchases form part of a single scheme or arrangement with the same seller (or connected sellers), the aggregate consideration is used to determine the applicable SDLT band for each property, pushing the effective rate upward. The buyer pays SDLT on each property, but the marginal rate is based on total aggregate spend.

Where the purchases are from different, unrelated sellers and negotiated completely independently, the transactions are not linked, and each is taxed on its own consideration without reference to the other. In practice, most same-day purchases by an investor involve the same seller (or the same developer), so the linked rules will usually apply.

What Was Multiple Dwellings Relief?

Multiple Dwellings Relief (MDR), which operated from 2011 to 2024, allowed buyers purchasing two or more dwellings in a single or linked transaction to calculate SDLT using the mean (average) consideration per dwelling. The mean was calculated by dividing total consideration by the number of dwellings. SDLT was then computed on the mean, subject to a minimum of 1%, and multiplied by the number of dwellings.

This structure benefited buyers significantly when individual property prices were moderate but the aggregate pushed into high rate bands. For example, buying 6 properties at £200,000 each (£1,200,000 aggregate) using MDR meant computing SDLT on the £200,000 mean — where the rate was only 2% on amounts above £125,000 — rather than on £1,200,000, where the 10% band applies. The policy rationale was to prevent SDLT acting as a barrier to the private rented sector.

HMRC abolished MDR in the 2024 Spring Budget, citing widespread misuse — particularly by buyers claiming relief on single properties with annexes or granny flats that did not genuinely constitute separate dwellings. HMRC estimated that MDR cost the Exchequer approximately £700 million per year at its peak, with a substantial portion attributable to disputed claims.

Transition Relief for Pre-6 March 2024 Contracts

The abolition of MDR takes effect for transactions with an effective date on or after 1 June 2024. However, transitional provisions protect contracts that were exchanged on or before 6 March 2024 (the date of the Spring Budget announcement). If contracts for a qualifying MDR transaction were exchanged on or before 6 March 2024, MDR can still be claimed regardless of when completion occurs — even if completion takes place after 1 June 2024.

This transitional protection is subject to conditions: the contract must not have been substantially varied after 6 March 2024 in a way that changes the financial terms, and the same buyer and seller must proceed to completion. Rescinding a contract and re-entering on new terms after 6 March 2024 would lose the transitional protection.

The transition relief also applies to other contracts entered into on or before 6 March 2024 under the sub-sale relief rules. If a buyer exercised an option before 6 March 2024, the resulting contract is treated as made on the date of option exercise for transition purposes.

Worked Example Post-MDR

A buyer simultaneously purchases two residential properties from the same seller: Property A at £300,000 and Property B at £700,000 (aggregate £1,000,000). The transactions are linked under s108 FA2003.

Note that each property is taxed at its own consideration level, but where transactions are linked, HMRC applies the marginal rate calculation by reference to the aggregate. Because each property's consideration already equals its own purchase price in a simple linked scenario, this produces the same result as independent taxation. The damaging effect of the linked rules is felt most when all properties are the same price and the aggregate pushes into a higher band.

Additional Property Surcharge Implications

If the buyer already owns a residential property at the end of the effective date of the transactions, the 5% additional property surcharge applies to every dwelling being purchased, without any exemption or reduction for simultaneous purchases. This applies even if the buyer intends to sell their existing home — the surcharge is triggered unless the replacement main residence rules are satisfied.

The replacement main residence condition requires the existing main residence to be sold either before or on the same day as completing the new purchase. Where a buyer is purchasing two investment properties simultaneously, neither can qualify as a replacement main residence, so the surcharge applies to both. There is no mechanism to obtain a refund of the surcharge on the investment properties by later selling a main residence.

For a property portfolio investor buying five flats at £250,000 each (£1,250,000 total), the 5% surcharge alone amounts to £62,500 in additional tax. This represents a major increase in acquisition cost and must be factored into yield calculations from the outset.

Planning Considerations

Where a buyer wants to acquire multiple properties and is concerned about linked transaction treatment, the primary planning tool is ensuring the purchases are genuinely independent — from different sellers, negotiated at different times, with no conditional linkage. If properties are available from different vendors in the same development or area, structuring the acquisitions as genuinely separate commercial decisions (documented accordingly) reduces the linked transaction risk.

In a corporate context, it may be efficient to acquire a portfolio through a share purchase of the holding company rather than individual property acquisitions. A share purchase attracts 0.5% stamp duty rather than residential SDLT rates, but brings the target company's deferred tax liabilities and other corporate liabilities onto the buyer's books. This is a complex analysis requiring specialist tax and legal advice.

For non-UK resident buyers, the 2% overseas buyer surcharge stacks on top of all other SDLT and surcharges. Any portfolio acquisition by an offshore investor therefore needs to model the full combination of standard rates, additional property surcharge, and overseas buyer surcharge to arrive at a realistic transaction cost.

Frequently Asked Questions