"Whilst a limited company structure can offer tax efficiencies in certain circumstances, it is not a one-size-fits-all solution"
- Simon Thomas - Ridgefield Consulting
UK landlords are reassessing how they structure property portfolios ahead of significant tax changes due in April 2027, but chartered accountants are warning against reactive decision-making as incorporation activity reaches record levels.
A revised property income tax regime for unincorporated landlords takes effect from April 2027, with rental profits subject to higher rates of 22%, 42% and 47% across all tax bands.
The rollout of Making Tax Digital (MTD) for Income Tax is already increasing compliance obligations for landlords earning over £50,000 annually, adding administrative pressure to an already complex regulatory environment.
Ongoing restrictions on mortgage interest relief, higher borrowing costs and increased HMRC scrutiny of property-related tax arrangements are adding further strain.
Against that backdrop, more landlords are exploring whether holding property through a buy-to-let limited company could offer greater long-term tax efficiency. Incorporation data reflects the trend, with a record 66,587 buy-to-let limited companies formed in 2025, up 8% year-on-year.
However, advisers are concerned that the surge risks encouraging rushed decisions, particularly as social media commentary increasingly frames limited company structures as a universal fix for rising tax burdens.
"We have seen a noticeable increase in enquiries relating to limited company structures and portfolio restructuring since details of the upcoming changes were announced," said Simon Thomas, managing director at Ridgefield Consulting.
"As more landlords move into higher-rate tax bands, the ability to pay corporation tax at between 19% and 25% rather than personal property income tax rates of up to 47% is making incorporation increasingly attractive.
"Whilst a limited company structure can offer tax efficiencies in certain circumstances, it is not a one-size-fits-all solution. A company is a separate legal entity with its own tax treatment and ongoing responsibilities, and moving personally held property into a company structure can trigger high costs, including Stamp Duty Land Tax, Capital Gains Tax considerations and remortgaging fees."
He added that landlords should ensure decisions are based on long-term strategy rather than short-term policy changes or market commentary. "Proactive planning is key. In many cases, incorporation may be appropriate, but equally, there are alternative approaches that may be more suitable depending on individual circumstances."
Why incorporation is gaining traction
The difference in tax treatment between personal ownership and corporate structures is a key driver behind rising incorporation activity. Since the introduction of Section 24, individual landlords can no longer deduct full mortgage interest from rental income, with relief restricted to a basic rate tax credit.
Limited companies are not subject to the same restriction and can generally deduct mortgage interest and finance costs as a business expense before corporation tax is applied. That can improve net rental returns, particularly across larger portfolios, while also offering limited liability and the ability to reinvest retained profits more efficiently.
The costs and complications of restructuring
Despite those advantages, incorporation is not always straightforward. Key considerations include:
- Stamp Duty Land Tax is typically payable on transfer based on market value
- Capital Gains Tax may arise on disposal into a company structure
- Existing mortgages will usually need refinancing onto limited company products, which may involve different lending criteria and rates
- Administrative and compliance obligations increase, with limited companies carrying higher reporting and legal responsibilities
HMRC scrutiny of incorporation relief and property structuring arrangements is also increasing, making professional advice essential before any restructuring is undertaken.
Alternative planning approaches
Incorporation is not the only available option. Depending on individual circumstances, alternatives include:
- Spousal ownership transfers, where partial or full transfers between spouses or civil partners can utilise unused personal allowances or lower tax bands, potentially reducing the overall tax burden on rental income
- Refinancing and debt restructuring, which may help reduce pressure where high interest rates continue to affect profitability
- Portfolio restructuring without incorporation, through disposing of underperforming assets or adjusting future acquisition strategies, without moving existing properties into a company
- Retaining personally held properties with long-term tax planning, which may remain the most commercially viable option for smaller portfolios where incorporation costs outweigh potential savings
- Using limited companies for future acquisitions only, allowing landlords to retain current assets personally while routing new purchases through a corporate structure to avoid immediate SDLT and CGT implications
Each option carries different tax and legal implications, and suitability will vary depending on portfolio size, income levels and borrowing structure.
With tax changes approaching and compliance requirements rising, landlords face growing pressure to review how their portfolios are structured.
Advisers are clear, however, that tailored, forward-looking planning aligned with long-term financial objectives will serve landlords better than decisions driven by immediate tax pressures or online commentary alone.
