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Section 24 Landlord Tax Rules: Mortgage Interest Relief Explained

How Section 24 restrictions impact individual buy-to-let landlords and strategies to manage higher-rate tax exposure on rental income.

How Section 24 Affects UK Buy-to-Let Landlords

Under Section 24 of the Finance (No. 2) Act 2015, individual residential property landlords are taxed on their gross rental income minus non-finance expenses, with mortgage interest relief restricted to a basic rate 20% tax reduction.

Example Impact on Higher-Rate Taxpayers

Before Section 24, a landlord earning £20,000 rent with £12,000 mortgage interest paid tax only on the £8,000 net profit. Under Section 24, the landlord is taxed on the full £20,000, which can push total earnings into higher tax bands and reduce entitlement to child benefit and personal allowances, offset only by a 20% tax credit (£2,400).

Options for Landlords

  • Maximising all allowable non-finance property repairs and management expenses.
  • Holding new property acquisitions within a Special Purpose Vehicle (SPV) Limited Company where mortgage finance costs remain deductible as an allowable business expense against Corporation Tax.
  • Transferring beneficial interest between spouses where appropriate.

Need Professional Assistance With This?

Taxnex provides straightforward, fixed-fee Self-Assessment and accounting services to help you file accurately and claim every allowable deduction.

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