UK Mortgage & Property Calculators

Buying or selling property in the UK triggers multiple taxes simultaneously, and the rules diverge sharply across the four nations. England and Northern Ireland use Stamp Duty Land Tax (SDLT) with a £125,000 nil-rate threshold and a first-time buyer £300,000 nil-rate (cliff at £500,000 purchase price). Scotland operates LBTT via Revenue Scotland with bands starting at £145,000 (£175,000 for FTBs) and an Additional Dwelling Supplement of 8%. Wales uses LTT through the Welsh Revenue Authority with no FTB relief and a higher-rate supplement of 5% on second properties. The additional-property surcharge across all three nations rose to 5% (England/NI), 8% (Scotland), and +5% (Wales) — making BTL acquisitions materially more expensive than pre-2024. Non-UK resident purchasers add another 2% on top of England/NI SDLT (so up to 7% combined). Multiple Dwellings Relief (MDR) was abolished from 1 June 2024 — a major change for bulk buyers. Our property calculators cover Mortgage repayments (with overpayment + remortgage scenarios), Mortgage Affordability stress-testing, Rental Yield, Buy-to-Let with Section 24 (mortgage interest now only a 20% basic-rate tax credit, not a deduction — pushed many landlords into higher rate), and Stamp Duty across all three regional regimes. Average UK property price sits around £290,000 (early 2026), with London at ~£530,000. The current mortgage rate environment shows 2-year fixes around 4.5-5.0%, 5-year fixes around 4.3-4.8% — with the unusual feature that 5-year fixes are CHEAPER than 2-year (swap-curve inversion expecting BoE rate cuts). Beyond purchase: CGT on disposal applies at 18% (basic rate) or 24% (higher) on residential property, with a 60-day reporting deadline via the CGT on UK Property Account at gov.uk. Private Residence Relief covers main homes throughout ownership; partial relief for BTL or let periods. Inheritance Tax on property uses the £325,000 Nil-Rate Band plus the £175,000 Residence Nil-Rate Band when passing main residence to direct descendants.