The question of whether to incorporate your buy-to-let portfolio has become increasingly complex as we head into 2026. With Section 24 mortgage interest restrictions fully phased in and Making Tax Digital for Income Tax Property (ITSA) starting from 6 April 2026, many landlords are weighing up the benefits of moving their properties into a limited company structure.

The decision isn't straightforward and depends heavily on your individual circumstances. Let's examine the key factors that will influence whether incorporation makes sense for your portfolio in 2026.

The Current Tax Landscape for Individual Landlords

Individual landlords face several tax challenges that have intensified over recent years. The most significant is Section 24, which restricts mortgage interest relief to the basic rate of tax (20%) rather than your marginal rate.

For a higher-rate taxpayer with £30,000 annual mortgage interest, this means they can only claim £6,000 in tax relief instead of £12,000. This effective reduction in deductible costs pushes more rental income into higher tax bands.

Additionally, from April 2026, landlords with gross property income above £10,000 will need to comply with quarterly reporting under MTD. This adds administrative burden and potential compliance costs.

How Limited Companies Avoid These Restrictions

Property companies aren't subject to Section 24 restrictions. They can deduct mortgage interest as a business expense at the full rate, potentially creating significant tax savings for higher and additional rate taxpayers.

A company owning the same £30,000 mortgage interest property would deduct the full amount against rental income, then pay Corporation Tax at 25% on profits above £250,000 (or 19% for smaller profits in 2025/26).

Companies also have more flexibility around timing of income recognition and can retain profits within the business to fund future property purchases or improvements.

Key Considerations for 2026 Incorporation

Your Current Tax Position

Incorporation typically benefits higher and additional rate taxpayers most. If you're a basic rate taxpayer with minimal mortgage debt, the advantages may be limited and could be outweighed by the additional compliance costs.

Consider your total income picture. If rental profits push you into higher rate tax bands, or if you have significant mortgage interest that's restricted under Section 24, incorporation becomes more attractive.

Portfolio Size and Growth Plans

Larger portfolios generally see greater benefits from incorporation due to economies of scale in compliance costs. If you own 5+ properties or plan significant expansion, the company structure often makes more sense.

For smaller portfolios (1-2 properties), the annual costs of running a company (accounts, Corporation Tax returns, potential professional fees) may outweigh the tax benefits.

Transfer Costs and Capital Gains

Moving existing properties into a company triggers a disposal for Capital Gains Tax purposes. You'll be treated as selling the properties to the company at market value, potentially creating a substantial CGT liability.

Some landlords use their annual CGT allowance (£3,000 for 2025/26) to transfer one property per year, but this strategy requires careful planning and may not work for larger portfolios.

MTD Implications for Your Decision

From 6 April 2026, both individual landlords and property companies will need to comply with MTD requirements if they exceed the £10,000 gross income threshold.

However, companies already maintain more detailed records for Corporation Tax purposes, so the additional MTD compliance burden may be less significant than for individual landlords who currently use simpler record-keeping methods.

Companies also have more established digital accounting systems, making the transition to quarterly reporting potentially smoother.

Practical Steps if You're Considering Incorporation

Start by calculating your potential tax savings. Our incorporation calculators can help you model different scenarios based on your rental income, mortgage interest, and current tax position.

Consider the timing carefully. If you're planning to incorporate, doing so early in the tax year can simplify the accounting and avoid split-year complications.

Factor in professional costs. You'll need legal advice for the property transfers, accounting support for the company structure, and ongoing compliance costs. Budget £3,000-£8,000 for the initial setup plus £1,500-£3,000 annually for ongoing compliance.

When Incorporation Might Not Make Sense

If you're planning to retire soon and don't need the income from your properties, keeping them in your personal name might allow for more straightforward inheritance planning.

Properties with significant unrealised capital gains may be better held personally if you can utilise reliefs like Principal Private Residence Relief or if the gains would be covered by your CGT allowances over time.

Some mortgage lenders have restrictions on lending to company structures or charge higher rates, which could affect your expansion plans.

Getting Professional Advice

The incorporation decision involves complex tax calculations and depends heavily on your specific circumstances. What works for one landlord may not work for another with a seemingly similar portfolio.

Consider speaking to a specialist who can model your specific situation and factor in your long-term plans. Our incorporation services include detailed financial modelling and support through the entire process.

The 2026 tax year brings significant changes for property investors. While incorporation isn't right for everyone, it's worth understanding whether it could benefit your particular situation as these new requirements take effect.