CalcHubUK is an independent resource — no ads driving editorial decisions, no affiliate pressure shaping the numbers. Just calculators that work, checked against HMRC's published rates, and kept up to date.
CalcHubUK is an independent UK calculator resource. We're a small team — not a media company, not a financial institution, not a comparison site with a commercial agenda. We built CalcHubUK because we kept finding that most salary and tax calculators online were either outdated, opaque about their methodology, or buried under so many ads that the actual answer was hard to find.
The team behind CalcHubUK has backgrounds across operational finance, manufacturing, and data. The OEE (Overall Equipment Effectiveness) calculators in particular come from real experience running UK food and FMCG manufacturing operations — not from reading about it. If you've ever tried to explain OEE losses to a board of directors using a spreadsheet, you'll understand why we built a cleaner tool.
For the tax and salary calculators, we cross-reference every figure against HMRC's published rates before anything goes live, and we revisit pages whenever rates change. We don't guess, and we don't just copy another site's numbers without checking them.
All income tax calculations use HMRC's published bands and thresholds for the 2026/27 tax year: personal allowance £12,570, basic rate 20% on income between £12,571 and £50,270, higher rate 40% on income between £50,271 and £125,140, and additional rate 45% above £125,140. The personal allowance tapers by £1 for every £2 of income above £100,000, reaching zero at £125,140.
National Insurance is calculated at 8% on earnings between £12,570 and £50,270, and 2% above £50,270 — reflecting the rate in place since April 2024. Older calculators elsewhere may still show 10% or 12%; ours do not.
All salary pages assume a standard 1257L tax code with no student loan, pension contributions, or other deductions unless stated. Where those deductions are shown, they are calculated separately and clearly labelled.
Mortgage repayment calculations use a standard annuity formula based on principal, interest rate and term. Stamp duty (SDLT) rates reflect the thresholds confirmed from April 2025, including the changes to first-time buyer relief. Scottish LBTT and Welsh LTT are noted separately where relevant.
Our OEE calculators use the standard ISO 22400-compliant formula: OEE = Availability × Performance × Quality. Each component is calculated independently before being multiplied together. Benchmarks are drawn from published industry data for UK food, FMCG, packaging and general manufacturing — not invented figures. Where a benchmark range is given, the source sector is clearly stated.
The OEE content was developed with direct input from people who have run multi-site UK food manufacturing operations at senior level. The worked examples, loss category definitions and improvement methodology reflect how the metric is actually used on the shop floor — not just how it's defined in a textbook.
BMI is calculated using the standard WHO formula: weight (kg) ÷ height (m)². TDEE uses the Mifflin-St Jeor equation for BMR, multiplied by an activity factor. Both are widely used clinical reference formulas. These tools are for general awareness only — they are not medical advice and should not replace a conversation with your GP or a registered dietitian.
CalcHubUK currently has calculators across five main areas:
Take-home pay for every major salary from £20k to £100k. Salary calculator, VAT, savings, energy.
Mortgage repayments, stamp duty (SDLT) for buyers, first-time buyers and additional properties.
Body mass index, total daily energy expenditure and calorie estimates based on standard clinical formulas.
Overall Equipment Effectiveness — Availability, Performance, Quality — with benchmarks and improvement guides.
Life, home, car and travel insurance cost guides with coverage explanations for UK policies.
CalcHubUK is not a financial advice service. We are not regulated by the FCA. The calculators produce estimates based on standard formulas and published rates — they cannot account for your specific tax code, employer arrangements, benefits in kind, non-standard deductions, or personal circumstances.
For decisions that actually matter — remortgaging, redundancy, pension planning, self-assessment — please talk to a qualified accountant or financial adviser. Our tools are a useful starting point, not a substitute for professional advice.
Disclaimer: All figures produced by CalcHubUK calculators are estimates for general guidance only. They are based on HMRC published rates for the 2026/27 tax year and standard calculation formulas. Actual tax, NI and take-home pay may differ depending on your specific circumstances, tax code, employer arrangements and other deductions. CalcHubUK is not affiliated with HMRC or the UK government. Nothing on this site constitutes financial, tax or legal advice.
For official tax rates, thresholds and personal tax account queries, visit gov.uk/income-tax-rates and gov.uk/national-insurance-rates — HMRC's own published sources, which our calculators are based on.
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