Section 24 Mortgage Interest Impact Analyser
Free AI tool that quantifies the impact of Section 24 on UK individual landlords. Enter your rent, mortgage interest and tax band and see the £ difference vs the pre-2017 full-deduction rules.
Type your question or pick an example below.
Concise, UK-specific guidance with the underlying rule.
Get matched with an independent specialist adviser.
Compare your tax bill under the post-2020 Section 24 rules vs the pre-2017 full-deduction rules, so you can see the £ impact of the mortgage interest restriction.
e.g. £30k rent, £12k mortgage interest, £3k other costs, 40% tax band
Try an example
Frequently asked questions
- What is Section 24?
- Section 24 of the Finance (No.2) Act 2015 phased out the deduction of mortgage interest as a rental expense for individual landlords between 2017 and 2020. It is replaced by a 20% basic-rate tax credit on finance costs.
- Who does Section 24 affect?
- Individual landlords (and partnerships of individuals) letting UK or overseas residential property. It does NOT affect limited companies, furnished holiday lets (until April 2025 changes), or commercial property.
- How can landlords reduce the impact of Section 24?
- Common strategies include incorporating into an SPV (with care over CGT and SDLT on transfer), reallocating ownership between spouses with lower tax bands, reducing leverage, or restructuring debt. Always model the full tax cost before acting — take the free Tax Health Check for a specialist review.
Get a personalised review
This AI tool gives general guidance. Take the free 12-question Tax Health Check and we'll match you with an independent specialist landlord tax adviser within 48 hours.
Take the free Tax Health Check