Free tools for UK property tax — built by tax specialists, not content marketers.
Each calculator uses current 2025/26 HMRC rates and the same arithmetic a specialist would run for you. The decision trees walk through the questions a practitioner actually asks — and end with a specific recommendation, not a pitch.
Calculators
5 of 5 liveCGT on UK Property Calculator
Model your capital gains tax liability on a UK residential property sale, including spousal rebalancing and the effect of documented improvements on your base cost.
SDLT Calculator + Surcharge Refund Checker
Work out the stamp duty on a UK residential property purchase, including the 5% additional-property surcharge and whether you can reclaim it if replacing a main home.
Section 24 Annual Cost Calculator
Calculate the annual cost of the Section 24 mortgage interest restriction on your rental property, and see how much a spousal transfer or incorporation could save.
IHT Liability Estimator
Estimate your inheritance tax exposure, including the nil-rate band, residence nil-rate band, transferable allowances from a deceased spouse, and the £2m taper threshold.
Incorporation Break-Even Calculator
Work out when transferring your BTL portfolio into a limited company would recover its one-off transfer cost — and when the hybrid structure is better.
Decision tools
4 of 4 liveShould I incorporate my BTL portfolio?
A short guided flow that asks about portfolio size, leverage, tax band, and spousal situation — then gives you a specific recommendation and next step.
Do I owe the SDLT surcharge?
Answer a few questions about the purchase and your existing property holdings to find out whether the 5% surcharge applies — and whether you can reclaim it later.
What should my IHT planning priorities be?
A short flow that takes your estate size, marital situation, and time horizon, and produces a tailored list of inheritance tax planning actions to consider.
Which NRCGT calculation method should I use?
If you are non-resident and selling a UK residential property, this flow compares the three legitimate calculation methods and recommends the best one for your profile.
These tools produce indicative figures for planning. Individual circumstances, reliefs, and elections can change the result. For a full review, tell us your situation and we come back with a fixed written quote in 48 hours.