From April 2027, Section 24 for higher rate taxpayers undergoes a fundamental change with the introduction of separate property income tax rates. Higher rate landlords will face a new 42% property tax rate instead of the current 40% income tax rate, while Section 24 mortgage interest restrictions remain fully in place.

This represents the biggest shake-up to landlord taxation since Section 24 was fully implemented. For higher rate landlords in 2027, the combined impact of restricted mortgage interest relief and increased tax rates could significantly reduce net rental yields across property portfolios.

What Are the New Property Tax Rates from April 2027?

From 6 April 2027, property income will be taxed under separate rates rather than being added to your general income and taxed at standard income tax bands.

The new property income tax rates are:

  • Basic rate: 22% (compared to 20% general income tax)
  • Higher rate: 42% (compared to 40% general income tax)
  • Additional rate: 47% (compared to 45% general income tax)

Your total income still determines which band applies, but property profits are now taxed at these higher rates. For example, if your total income (employment plus property) puts you in the higher rate band, all your property profits are taxed at 42% property tax rate.

How Does Section 24 Work with the New Rates?

Section 24 mortgage interest restrictions continue unchanged, but the tax impact becomes more severe due to the increased rates.

Here's how Section 24 operates from April 2027:

  • Mortgage interest is still restricted to a 20% basic rate tax credit
  • You cannot deduct mortgage interest from rental income before calculating tax
  • Property profits are taxed at the new separate rates (22%/42%/47%)
  • You receive a 20% tax credit for mortgage interest paid

The gap between your property tax rate and the 20% mortgage interest relief widens significantly. A higher rate taxpayer now faces a 22 percentage point difference (42% tax rate minus 20% relief) compared to the current 20 percentage point gap.

Example: Higher Rate Landlord in 2027

Sarah owns three BTL properties generating £60,000 annual rental income with £30,000 mortgage interest. Her employment income is £55,000, making her a higher rate taxpayer.

Tax calculation from April 2027:

  • Rental income: £60,000
  • Other allowable expenses: £8,000
  • Taxable property profit: £52,000 (mortgage interest not deducted)
  • Property tax at 42%: £21,840
  • Less: 20% tax credit on mortgage interest (£30,000 × 20%): £6,000
  • Net property tax: £15,840

Under the current system (2026/27), the same calculation would result in £14,400 net tax, meaning Sarah pays £1,440 more annually from April 2027.

Which Landlords Are Most Affected?

The new 42% property tax rate hits certain landlord profiles harder than others.

Higher Rate Taxpayers with High Leverage

Landlords with significant mortgage debt see the biggest impact. The wider gap between the 42% property tax rate and 20% mortgage interest relief means highly leveraged portfolios become less tax-efficient.

A landlord with 75% loan-to-value mortgages across their portfolio typically sees their effective tax rate increase by 2-4 percentage points from April 2027.

Portfolio Landlords

Larger portfolios often push landlords into higher tax bands. Under the new system, once your total income exceeds £50,270 (the higher rate threshold), all property profits face the 42% rate.

This creates a more pronounced cliff edge effect compared to the current system where property income is added to other income and taxed progressively.

Limited Impact Groups

Some landlords see minimal additional impact:

  • Low-leverage landlords with minimal mortgage debt
  • Basic rate taxpayers (though they still face the increase from 20% to 22%)
  • Landlords who have already incorporated their portfolios

Should Higher Rate Landlords Consider Incorporation?

The new property tax rates make buy-to-let limited company structures more attractive for higher rate taxpayers.

Corporation tax rates remain unchanged:

  • Small profits rate: 19% (profits up to £250,000)
  • Main rate: 25% (profits above £250,000)

A higher rate landlord facing 42% property tax could potentially save 17-23 percentage points by incorporating, though this depends on extraction strategies and dividend tax implications.

Incorporation Considerations

Before rushing to incorporate, consider:

  • SDLT costs: 5% additional property surcharge on transfers to company
  • Capital gains: Potential CGT liability on incorporation
  • Extraction costs: Dividend tax when taking money out
  • Mortgage availability: Limited BTL mortgage options for companies

The break-even point for incorporation typically requires property profits above £40,000-50,000 annually, but this threshold may lower with the new rates.

Planning Strategies for 2027

Higher rate landlords should consider several strategies before the new rates take effect.

Timing Disposals

If you're considering selling properties, completing disposals before April 2027 avoids the higher property tax rates on any rental income earned in the final ownership period.

However, capital gains tax rates remain separate from these changes, so disposal timing should focus on income tax savings rather than CGT considerations.

Maximising Deductions

With higher tax rates, ensuring you claim all available landlord tax deductions becomes more valuable. A £1,000 deduction saves £420 for a higher rate taxpayer from April 2027, compared to £400 currently.

Focus on often-missed deductions:

  • Professional fees and property accountant costs
  • Travel expenses for property management
  • Home office costs if self-managing
  • Property insurance and safety compliance costs

Income Smoothing

The separate property tax bands create opportunities for income smoothing. If your employment income fluctuates, timing property disposals or major improvements in lower-income years could keep you in the basic rate property tax band.

Compliance and Record-Keeping

The new property tax system coincides with Making Tax Digital requirements becoming mandatory for most landlords from April 2026.

Accurate record-keeping becomes even more critical with higher tax rates. HMRC's focus on property income compliance is increasing, and the financial impact of errors grows with the new rates.

Digital Records Requirements

From April 2026, landlords with gross property income above £10,000 must:

  • Keep digital records using MTD-compatible software
  • Submit quarterly updates to HMRC
  • Provide an annual summary and declaration

The higher tax rates from 2027 make compliance even more important, as potential penalties and interest charges apply to larger tax liabilities.

Getting Professional Advice

The combination of new property tax rates and continuing Section 24 restrictions creates complex planning scenarios that benefit from professional guidance.

A specialist property accountant can help model different scenarios, including:

  • Incorporation versus continued individual ownership
  • Portfolio restructuring strategies
  • Tax-efficient disposal timing
  • MTD compliance preparation

The tax savings from professional advice often exceed the costs, particularly with higher tax rates making errors more expensive.

Key Takeaways

The new property tax system from April 2027 significantly impacts higher rate landlords through increased tax rates while Section 24 mortgage interest restrictions remain unchanged.

Key points to remember:

  • Property income faces separate tax rates: 22%/42%/47% from April 2027
  • Section 24 continues with 20% mortgage interest relief
  • Higher rate taxpayers see the biggest impact due to the 42% rate
  • Incorporation becomes more attractive for larger portfolios
  • Planning before April 2027 could reduce overall tax burden

The window for tax planning before these changes is narrowing. Whether through restructuring, incorporation, or strategic disposals, taking action before April 2027 could save thousands of pounds annually for affected landlords.