Section 24 Calculator (UK)

Monthly view OFF
2026/27 Tax Year
Compare Mode
Tax Year
Property
Annual rental figures
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£
Letting agent fees, insurance, repairs (not capital improvements)
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Used to determine your marginal income tax rate
Mortgage
Interest is the key Section 24 variable
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%
£
Leave blank to auto-calculate from balance × rate

💡 Section 24: Personal landlords cannot deduct mortgage interest from rental income. Instead, a 20% tax credit is applied against the tax liability. Limited companies are unaffected — interest remains fully deductible.

Personal Name Settings

£12,570 annual personal allowance applied against rental income

Limited Company Settings

Model the "net to you" outcome after extracting profits as dividends

£9,100 salary (below NI threshold) before dividends

Advanced Assumptions
Edit tax rates and thresholds
Personal Name — Income Tax
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Tax Bands
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Limited Company — Corporation Tax
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Dividend Extraction
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