THE PROPERTY FILTER TAKE
Non-UK residents buying an additional property in England now face a combined SDLT rate of up to 19% - one of the highest property transaction taxes in the world, according to Property Industry Eye.
On a £20 million prime London property, that bill reaches £3.8 million before a single key is turned - and for buyers who only intend to stay in the UK for five years, renting the same property could cost roughly the same amount, with capital left free to earn returns elsewhere.
This is a legitimate tax-planning consideration, not a loophole - but whether renting versus buying makes sense depends entirely on your personal tax position, residency status, and investment goals. Speak to your accountant.
The "stamp duty savings scheme hidden in plain sight" is not a legal structure, a trust arrangement, or a HMRC concession. It is renting. And for international buyers facing an effective SDLT (Stamp Duty Land Tax) rate of up to 19%, it is increasingly the rational choice.
Writing in Property Industry Eye, veteran agent Trevor Abrahmsohn of Glentree Estates puts the numbers on the table. A non-UK resident purchasing an additional property today can face that 19% combined rate. On a £20 million super-mansion, your liability reaches £3.8 million. On a £30 million property, the bill rises to £5.7 million.
How the 19% Rate Is Built Up
The 19% figure is not a single rate - it is a stack of surcharges applied on top of the standard SDLT bands.
The standard SDLT rates for residential property above £1.5 million reach 12% on the slice above that threshold. Add the 5% additional dwelling surcharge (applied when buying a second home or investment property, and raised from 3% to 5% in October 2024 under the Autumn Statement), then the 2% non-UK resident surcharge introduced in April 2021, and the effective rate on the top slice of a high-value purchase reaches 19%. For very high-value transactions where most of the purchase price sits in the uppermost band, the blended effective rate across the whole transaction approaches that 19% figure.
For most property investors, the relevant rates are lower. Use our stamp duty calculator to model your actual liability before committing to any purchase.
The Worked Example: Five Years, One Decision
Here is the comparison Abrahmsohn draws. A high-net-worth international buyer wants to live in a £20 million London mansion for five years.
Option A - Buy: Pay £3.8 million in SDLT on day one. The capital is gone. The property then faces running costs Abrahmsohn estimates at upwards of £500,000 per year - security, maintenance, lift servicing, pool heating, landscaping. Over five years, that is another £2.5 million minimum. Total outlay before any depreciation risk: over £6 million, none of it recoverable.
Option B - Rent: Prime London rental rates on super-mansions are substantial, but over five years the total rent paid can approximate the SDLT bill alone. The £3.8 million that would have gone to the Treasury stays invested, free to generate returns elsewhere. The maintenance headaches pass to the landlord. When the boiler fails or the lift malfunctions, someone else picks up the phone.
The lifestyle is identical. The school catchments, the postcode, the view - none of it changes. Only the balance sheet does.
This is not tax avoidance. There is no scheme to register, no HMRC clearance required, no lawyer needed to structure a vehicle. It is a straightforward financial decision: do not pay a tax you can avoid by not triggering it.
Who This Actually Applies To
This analysis applies most cleanly to a narrow segment: international buyers, particularly non-UK residents, purchasing high-value additional properties with a defined UK residency horizon. If that is not you, the maths changes significantly.
For UK-resident investors buying below the £1.5 million threshold and intending to hold long term, the buy-versus-rent calculus is different. Capital growth, forced savings discipline, leverage, and rental income all feature in the other direction. The property investment strategies guide on Property Filter covers the full framework.
The broader point Abrahmsohn makes - and it is worth taking seriously - is that successive SDLT increases have genuinely altered transaction economics at the top of the market. The tax is no longer a minor friction cost. At 19%, it is a structural barrier that changes the optimum holding strategy. That shift in the prime market has knock-on effects through the chain.
Whatever your position, model the numbers before you commit. The negotiation and finance section of Property Filter is a good starting point for understanding how purchase costs interact with returns. And access our free resources for calculators and guides covering the full acquisition cost picture.
Speak to your accountant or tax adviser before acting on any information in this article.
Key takeaways
Non-UK residents buying additional residential property can face a combined SDLT rate of up to 19%, one of the highest property transaction taxes globally.
On a £20 million purchase, the SDLT bill alone reaches £3.8 million - comparable to five years of prime London rental costs on the same property.
Renting instead of buying is a legitimate tax-planning decision for buyers with a defined UK residency horizon, not a scheme or avoidance structure.
The "stamp duty savings scheme hidden in plain sight" is not a legal structure, a trust arrangement, or a HMRC concession. It is renting. And for international buyers facing an effective SDLT (Stamp Duty Land Tax) rate of up to 19%, it is increasingly the rational choice.
Writing in Property Industry Eye, veteran agent Trevor Abrahmsohn of Glentree Estates puts the numbers on the table. A non-UK resident purchasing an additional property today can face that 19% combined rate. On a £20 million super-mansion, your liability reaches £3.8 million. On a £30 million property, the bill rises to £5.7 million.
How the 19% Rate Is Built Up
The 19% figure is not a single rate - it is a stack of surcharges applied on top of the standard SDLT bands.
The standard SDLT rates for residential property above £1.5 million reach 12% on the slice above that threshold. Add the 5% additional dwelling surcharge (applied when buying a second home or investment property, and raised from 3% to 5% in October 2024 under the Autumn Statement), then the 2% non-UK resident surcharge introduced in April 2021, and the effective rate on the top slice of a high-value purchase reaches 19%. For very high-value transactions where most of the purchase price sits in the uppermost band, the blended effective rate across the whole transaction approaches that 19% figure.
For most property investors, the relevant rates are lower. Use our stamp duty calculator to model your actual liability before committing to any purchase.
The Worked Example: Five Years, One Decision
Here is the comparison Abrahmsohn draws. A high-net-worth international buyer wants to live in a £20 million London mansion for five years.
Option A - Buy: Pay £3.8 million in SDLT on day one. The capital is gone. The property then faces running costs Abrahmsohn estimates at upwards of £500,000 per year - security, maintenance, lift servicing, pool heating, landscaping. Over five years, that is another £2.5 million minimum. Total outlay before any depreciation risk: over £6 million, none of it recoverable.
Option B - Rent: Prime London rental rates on super-mansions are substantial, but over five years the total rent paid can approximate the SDLT bill alone. The £3.8 million that would have gone to the Treasury stays invested, free to generate returns elsewhere. The maintenance headaches pass to the landlord. When the boiler fails or the lift malfunctions, someone else picks up the phone.
The lifestyle is identical. The school catchments, the postcode, the view - none of it changes. Only the balance sheet does.
This is not tax avoidance. There is no scheme to register, no HMRC clearance required, no lawyer needed to structure a vehicle. It is a straightforward financial decision: do not pay a tax you can avoid by not triggering it.
Who This Actually Applies To
This analysis applies most cleanly to a narrow segment: international buyers, particularly non-UK residents, purchasing high-value additional properties with a defined UK residency horizon. If that is not you, the maths changes significantly.
For UK-resident investors buying below the £1.5 million threshold and intending to hold long term, the buy-versus-rent calculus is different. Capital growth, forced savings discipline, leverage, and rental income all feature in the other direction. The property investment strategies guide on Property Filter covers the full framework.
The broader point Abrahmsohn makes - and it is worth taking seriously - is that successive SDLT increases have genuinely altered transaction economics at the top of the market. The tax is no longer a minor friction cost. At 19%, it is a structural barrier that changes the optimum holding strategy. That shift in the prime market has knock-on effects through the chain.
Whatever your position, model the numbers before you commit. The negotiation and finance section of Property Filter is a good starting point for understanding how purchase costs interact with returns. And access our free resources for calculators and guides covering the full acquisition cost picture.
Speak to your accountant or tax adviser before acting on any information in this article.
Key takeaways
Non-UK residents buying additional residential property can face a combined SDLT rate of up to 19%, one of the highest property transaction taxes globally.
On a £20 million purchase, the SDLT bill alone reaches £3.8 million - comparable to five years of prime London rental costs on the same property.
Renting instead of buying is a legitimate tax-planning decision for buyers with a defined UK residency horizon, not a scheme or avoidance structure.
Frequently asked questions
Frequently asked questions
What is the 19% SDLT rate made up of?
Does this apply to ordinary buy-to-let investors?
Is renting instead of buying tax avoidance?
What are the risks of renting rather than buying?
