Precision Financial Calculators
Empowering you to make informed decisions about your money. Accurate, transparent, and private calculation models for UK income tax, pension planning, mortgage overpayments, and household wealth. Free to use with zero registration.
UK Salary & Tax Calculator
Complete PAYE take-home pay modeling with 2026/27 income tax brackets, employee NI, pension salary sacrifice optimization, and student loan plans 1, 2, 4, 5 & Postgraduate.
Upcoming Tools in Development
Additional models undergoing validation against UK market standards and tariffs.
Compound Interest & Wealth Forecaster
Model exponential investment growth for ISA and pension portfolios with inflation adjustments, regular contributions, and annual fee drag analysis.
Mortgage Overpayment Calculator
Calculate total interest savings and term reductions achievable through regular monthly or one-off lump-sum capital overpayments.
Solar & Battery Storage ROI
Evaluate capital payback schedules, Smart Export Guarantee (SEG) revenues, and lifetime household electricity bill reductions.
Heat Pump vs Gas Boiler Comparison
Compare seasonal coefficient of performance (SCOP), the Boiler Upgrade Scheme grant, and running cost differentials against domestic gas.
EV Charging vs Petrol Cost per Mile
Calculate true pence-per-mile differentials comparing domestic off-peak overnight electricity rates against commercial public charging and petrol.