Business tools and calculators
Free calculators built for UK businesses: pricing and margins, cash and runway, hiring costs, tax, VAT and energy. Every tool runs in your browser, uses current UK rates where they matter, and explains the maths behind the answer.
- 30free calculators
- 10categories
- 2026/27tax year rates, kept current
- 0sign-ups, cookies or stored data
- Startup Tools New
Break-Even Calculator
Break-even units and revenue from fixed costs, price and variable cost, with margin of safety.
Open calculator - Startup Tools
Burn Rate Calculator
Monthly cash burn before and after revenue, with the resulting runway and run-out date.
Open calculator - Cost Management Tools New
Business Energy Cost Calculator
Annual energy cost range and kWh for 24 UK business types from premises size and hours, with your own tariff if you have it.
Open calculator - Operations and Productivity Tools New
Business Health Check
A scored ten-question check of margin, cash, customers, pricing and dependence, with three priorities and the tools to act on them.
Open calculator - Investment and Business Valuation Tools New
Business Valuation Calculator
Indicative sale value from adjusted profit, sector multiple, growth trend, cash and debt.
Open calculator - Financial Tools
Capital Gains Tax Calculator
CGT due after the annual exempt amount, losses and your income, at the 18%/24% or Business Asset Disposal Relief rate.
Open calculator - Financial Tools
Compound Interest Calculator
Growth of savings or investments with compounding and optional monthly top-ups.
Open calculator - Cost Management Tools
Cost of Goods Sold (COGS) Calculator
COGS from inventory movements, plus gross profit and margin.
Open calculator - Marketing Tools
Customer Acquisition Cost (CAC) Calculator
Fully loaded cost per new customer, and how it stacks up against lifetime value.
Open calculator - Marketing Tools
Customer Lifetime Value (CLV) Calculator
Lifetime revenue and profit per customer, with the CLV:CAC ratio if you know your acquisition cost.
Open calculator - Financial Tools
Debt-to-Income (DTI) Ratio Calculator
DTI ratio from monthly repayments and income, with the lender view and the reduction needed for a healthy ratio.
Open calculator - E-commerce and Sales Tools
Discount and Pricing Calculator
Sale price, saving, margin after discount and the volume uplift a promotion must deliver.
Open calculator - Tax and Compliance Tools New
Dividend vs Salary Calculator
Director's take-home under salary plus dividends versus all salary, with Corporation Tax, NI and dividend tax.
Open calculator - Human Resources (HR) Tools
Employee Turnover Rate Calculator
Turnover and retention rates from headcount and leavers, with an estimated replacement cost.
Open calculator - Miscellaneous Tools
Exchange Rate Calculator
Converted amount after percentage and fixed fees, and the effective rate you actually get.
Open calculator - E-commerce and Sales Tools New
Freelance Day Rate Calculator
Day and hourly rate from your target income, costs, time off and billable percentage.
Open calculator - Startup Tools
Funding Runway Calculator
Runway with a changing burn rate, funding gap to a target, and runway after a planned raise.
Open calculator - Operations and Productivity Tools
Inventory Turnover Ratio Calculator
Stock turns per period and days inventory outstanding from COGS and average inventory.
Open calculator - Financial Tools New
Late Payment Interest Calculator
Statutory interest at 8% over base rate plus the fixed compensation fee, from the invoice amount and dates.
Open calculator - Operations and Productivity Tools New
Meeting Cost Calculator
The salary cost of a meeting per session and per year, from attendees, pay and duration.
Open calculator - Cost Management Tools
Overhead Cost Allocation Calculator
Overhead rate per hour, unit or pound of direct cost, and the overhead to load onto a specific job.
Open calculator - Cost Management Tools
Price Elasticity of Demand Calculator
Midpoint elasticity from two price points, with the change in revenue and what it means for pricing.
Open calculator - Financial Tools
Profit Margin Calculator
Gross and net profit margin plus markup, with a cost breakdown.
Open calculator - Financial Tools
ROI (Return on Investment) Calculator
Total and annualised return on investment from what you put in and what came back.
Open calculator - Human Resources (HR) Tools
Salary Tax and Net Income Calculator
Net pay per month, year and week with a full income tax and NI breakdown for England, Wales, Northern Ireland or Scotland.
Open calculator - E-commerce and Sales Tools
Sales Commission Calculator
Flat or tiered commission, effective rate and total pay for the period.
Open calculator - Investment and Business Valuation Tools
Stock Valuation Calculator
Gordon Growth Model valuation from dividend, growth rate and required return, with the implied return at today's price.
Open calculator - Operations and Productivity Tools
Time Management Calculator
Productive versus non-productive time and its cost at your hourly rate.
Open calculator - Human Resources (HR) Tools New
True Cost of an Employee Calculator
Salary plus employer NI, pension and other costs, with the Employment Allowance and under-21/apprentice rules applied.
Open calculator - Tax and Compliance Tools New
VAT Calculator
Net, VAT and gross at any rate, plus headroom against the £90,000 registration threshold.
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How these tools are built
Current UK rates
Tax, National Insurance, VAT and Capital Gains figures are the 2026/27 rates and were last reviewed on 2nd September 2026. The review date is printed on every calculator that depends on them.
Nothing is stored
Every calculation happens in your browser. We never see or keep the numbers you type. Share a result by copying the link, which carries your inputs in the address bar only.
The maths is shown
Each tool shows the formula, a worked example and the assumptions it makes, so you can check the result or reproduce it in your own spreadsheet.
UK tax rates and thresholds 2026/27
The figures behind the calculators, with what changed this year and the full tables. Updated automatically.
- Capital Gains Tax£3,000Annual exempt amountCapital Gains Tax rates and allowance 2026/27
- Corporation Tax19%Profits up to £50,000Corporation Tax rates and marginal relief 2026/27
- Dividend tax£500Dividend allowanceDividend tax rates and allowance 2026/27
- Income tax£12,570Personal allowanceIncome tax rates and bands 2026/27
- National Insurance8%Employee main rateNational Insurance rates and thresholds 2026/27
- Late payment interest11.75%Statutory rate nowStatutory late payment interest rate and compensation
- Student loans£29,385Plan 2 thresholdStudent loan repayment thresholds 2026/27
- VAT£90,000Registration thresholdVAT registration threshold and rates 2026/27