Section 24 Calculator
Your Property Details
Enter your annual figures to see the Section 24 impact
£
Service charges, repairs, agent fees, etc.
£
Interest-only payment × 12
£
Your Section 24 Tax Impact
Gross Rental Income£12,000
Operating Costs-£2,000
Mortgage Interest-£5,000
Net Income (Pre-Tax)£5,000
Section 24 Tax Calculation
Taxable Profit (Interest NOT deductible)£10,000
Gross Tax @ 40%£4,000
Section 24 Relief (20% credit)-£1,000
Tax Bill£3,000
Cashflow After Tax
What actually hits your bank account
£2,000
Section 24 Impact
You're paying £1,000 more in tax per year compared to pre-2017 rules when mortgage interest was fully deductible.
Compare Across Tax Bands
Basic (20%)
£1,000
+£0 burden
Higher (40%)
£3,000
+£1,000 burden
Additional (45%)
£3,500
+£1,250 burden