Tools for testing a tax question before it becomes a decision.
Use these calculators, trackers and scenario models with your own numbers, then follow the linked guide to understand the assumptions and tax rules behind the result.
Residence & international tax
Practical tools for internationally mobile individuals, UK leavers and new UK residents.
UK Statutory Residence Test Tracker
Track UK days, UK workdays, overseas work and leave throughout the tax year. Save your diary, model future trips and import or export spreadsheet data before a residence threshold becomes a problem.
FIG Election Optimiser
Compare no claim, broad relief and selective source-by-source FIG claims. The optimiser also applies treaty-aware Foreign Tax Credit Relief before ranking the estimated UK tax outcomes.
UK Departure Date & Split-Year Optimiser
Compare genuine UK departure dates under split-year Cases 1-3, test the relevant UK-day and workday limits, and identify the statutory threshold cliffs that can change the result of a mid-year move.
Overseas Workday Relief Calculator
Estimate OWR on regular salary under the post-6 April 2025 rules, including split-year workdays, overseas-duty allocation and the 30% / £300,000 annual financial limit.
Business structure & tax
Compare business structures and see how profit extraction assumptions change the relative tax outcome.
Sole Trader vs Limited Company Tax Simulator
Compare a sole trader with a limited company using your business profit, number of shareholders and the proportion of profit retained in the company.
Investing & retirement
Stress-test investment strategies and downside scenarios rather than relying on a single optimistic assumption.
Bitcoin HODL Retirement Simulator
Test how a Bitcoin-funded retirement might behave under different growth, inflation, borrowing and crash assumptions.
Spread Betting Cash Buffer Calculator
Estimate the additional cash buffer required to withstand a specified adverse price movement in a leveraged spread-betting position.
Property & pensions
Practical calculators for pension contribution planning and property transaction costs.
Pension Annual Allowance Calculator
Calculate threshold income, adjusted income, tapering and carry-forward availability to support pension contribution planning.
Quick Stamp Duty Land Tax Calculator
Estimate Stamp Duty Land Tax on a UK property purchase and use the linked guide to understand the key rates, bands and transaction points that affect the result.
Use the result to make the next conversation more useful.
These tools are designed to make planning questions more concrete, not to replace professional advice. If the result is material, use the linked guide or speak to us about the assumptions and next steps.