Tools & experiments
- UK Inheritance Tax Four estates against the 40% charge — with the 60% band where the residence allowance is taken away above £2m, the April 2026 ceiling on farm and business relief, and the charitable legacy that can leave the heirs better off than giving less.
- Corporation Tax & Owner Extraction Corporation tax with its 26.5% marginal relief band, and what it costs to get the profit out — salary, dividends, retained profit or a pension — with the stretch where the next pound of company profit is taxed at 69%.
- UK Stamp Duty on Property All three regimes side by side — SDLT in England and Northern Ireland, LBTT in Scotland, LTT in Wales — for every buyer type, with the marginal rates and the cliff edges where one more pound of asking price costs thousands.
- Pipe Schedules Outside diameter, wall thickness, bore, weight and capacity for every nominal size and schedule of wrought steel pipe to ASME B36.10M and B36.19M, drawn to scale, in metric or imperial units.
- UK Tax on Savings, Dividends & Gains What the next pound of interest, dividend or capital gain is taxed at once it is stacked on your other income, for 2025/26 and 2026/27 — including the personal savings allowance cliff edge.
- UK Tax & Take-Home Pay Marginal rates, effective rates and take-home pay for 2025/26 and 2026/27, comparing Scotland with the rest of the UK — including the Universal Credit taper, student loans, employer NI and the £100,000 childcare cliff.
- Unit Converter Convert between the units that turn up in process and flow assurance work — 27 quantities including gauge pressure, thermal properties, API gravity and standard gas volumes, with every unit shown at once and the assumptions spelled out.