Calculators for business owners
Margins, GST and VAT, break-even and payroll.
Personal Finance
Investing
- ROI CalculatorMeasure return on investment as a percentage, with an annualised figure for multi-year holdings.
- YoY Growth CalculatorWork out year-over-year growth and compound growth across a series.
- Solo 401(k) CalculatorFind the most a self-employed person can contribute to a Solo 401(k) or SEP IRA in 2026.
Loans & Mortgages
Tax & Salary
- Holiday Entitlement CalculatorWork out statutory paid holiday for full-time, part-time and irregular hours.
- Net to Gross Salary CalculatorFind the gross salary you need to take home a target amount after tax.
- GST CalculatorAdd or remove GST from a price and see the tax portion at any rate.
- VAT CalculatorAdd VAT to a net price or extract it from a gross price at any rate.
- PTO Accrual CalculatorSee how much paid time off you earn each pay period and by a date.
- GST Late Fee CalculatorWork out late fee and interest for late GSTR-3B or GSTR-1.
- Minimum Wage CheckerCheck pay against the UK minimum wage for your age from April 2026.
- Statutory Sick Pay CalculatorWork out SSP under the April 2026 rules.
- UK Dividend Tax CalculatorCalculate tax on dividends and savings interest for 2026/27.
- Umbrella Company CalculatorEstimate a contractor's take-home pay through an umbrella company.
- Self Assessment Tax CalculatorEstimate a sole trader's income tax, Class 4 NI and payments on account.
- Self-Employment Tax CalculatorEstimate Social Security and Medicare tax on freelance or self-employed income.
- National Insurance CalculatorCalculate employee, employer or self-employed National Insurance contributions.
- Quarterly Estimated Tax CalculatorWork out quarterly estimated tax payments to avoid an underpayment penalty.
- Advance Tax CalculatorSplit your yearly tax liability into Indian advance tax instalments and due dates.
- TDS CalculatorFind the tax deducted at source on salary, rent, interest and professional fees.
- UAE Corporate Tax CalculatorEstimate UAE corporate tax on business profits above the zero-rate threshold.
- Reverse Sales Tax CalculatorBack out the pre-tax price and tax from a total that already includes sales tax.
- HST CalculatorCalculate HST, GST and PST on a purchase in any Canadian province.
- Import Duty CalculatorEstimate customs duty and import taxes on goods shipped from abroad.
Math
Date & Time
- Business Days CalculatorCount working days between dates, skipping weekends and public holidays.
- Time Card CalculatorTotal weekly time cards with breaks and overtime for payroll.
- Week Number CalculatorFind the ISO week number of any date.
- Hours to Decimal CalculatorConvert hours and minutes into decimal hours for billing and payroll.
Unit Converters
Home & Property
Business
- PayPal Fee CalculatorFind PayPal fees on a payment, or how much to charge to receive a set amount.
- Etsy Fee CalculatorWork out Etsy listing, transaction and payment processing fees and your profit.
- eBay Fee CalculatorEstimate eBay final value fees and profit on a sale.
- CBM CalculatorFind shipment volume in cubic metres and how much of a container it fills.
- Dimensional Weight CalculatorWork out billable volumetric weight for couriers and air freight.
- YouTube Money CalculatorEstimate YouTube earnings from views and RPM.
- Meeting Cost CalculatorSee what a meeting costs in salaries and overhead, per meeting and per year.
- Food Cost CalculatorPrice menu items from plate cost, or find food cost percentage.
- Financial Ratios CalculatorCalculate ROE, ROA, margins, current, quick and debt ratios, and interest coverage.
- COGS CalculatorWork out cost of goods sold, gross margin and inventory turnover.
- Burn Rate & Runway CalculatorFind monthly burn and how many months of runway your cash gives you.
- Reorder Point & Safety Stock CalculatorCalculate reorder point and safety stock for a target service level.
- DSCR CalculatorWork out the debt service coverage ratio for a rental or business loan.
- TikTok Money CalculatorEstimate TikTok Creator Rewards earnings from views and RPM.
- Stripe Fee CalculatorCalculate Stripe fees or how much to charge to receive an exact amount.
- Shopify Fee CalculatorCompare Shopify plan costs and payment fees for your sales.
- Profit Margin CalculatorFind gross, operating or net profit margin from revenue and costs.
- Markup CalculatorSet a selling price from cost and markup, and compare markup with margin.
- Break-Even CalculatorFind how many units you must sell to cover fixed and variable costs.
- Commission CalculatorCalculate sales commission at flat or tiered rates.
- Depreciation CalculatorBuild a depreciation schedule using straight-line, declining or WDV methods.
- NPV CalculatorDiscount a project's future cash flows to find its net present value.
- IRR CalculatorFind the internal rate of return of a series of cash flows.
- Payroll CalculatorWork out gross pay, deductions and employer costs for each employee.
- Bradford Factor CalculatorCalculate the Bradford Factor absence score.
- PERT Estimate CalculatorMake three-point PERT estimates and see the chance of meeting a deadline.
- Selling Price CalculatorWork out a selling price from cost and the margin you want.
- Contribution Margin CalculatorFind contribution margin per unit and as a ratio.
- GST Invoice CalculatorSplit an invoice amount into taxable value, CGST, SGST or IGST.
- Discount Impact CalculatorSee how much extra volume you need to sell to offset a price discount.
- EBITDA CalculatorCalculate EBITDA and EBITDA margin from an income statement.
- Working Capital CalculatorFind working capital and the current ratio from assets and liabilities.
- Inventory Turnover CalculatorMeasure how quickly stock sells and days of inventory on hand.
- Receivables Turnover CalculatorFind receivables turnover and average days to collect payment.
- Debt-to-Equity Ratio CalculatorMeasure a company's leverage as total debt divided by equity.
- Payback Period CalculatorFind how long an investment takes to earn back its cost.
- WACC CalculatorCalculate the weighted average cost of capital.
- Business Valuation CalculatorEstimate what a small business is worth using revenue and earnings multiples.
- Startup Equity Dilution CalculatorSee how a funding round dilutes founder and investor ownership.
- Customer Acquisition Cost CalculatorFind what you spend on average to win each new customer.
- Customer Lifetime Value CalculatorEstimate the revenue a typical customer brings over the relationship.
- LTV to CAC Ratio CalculatorCompare customer lifetime value with acquisition cost to judge unit economics.
- Churn Rate CalculatorCalculate customer or revenue churn over a period.
- ROAS CalculatorMeasure revenue earned for every unit of ad spend.
- CPM CalculatorCalculate cost per thousand impressions, total cost or impressions.
- Conversion Rate CalculatorFind the share of visitors who complete a goal.
- Engagement Rate CalculatorMeasure social media engagement rate by followers or reach.
- Employee Cost CalculatorSee the full cost of an employee beyond salary, including taxes and benefits.
- Freelance Hourly Rate CalculatorSet an hourly rate that covers your target income, expenses and time off.
- Economic Order Quantity CalculatorFind the order size that minimises total inventory costs.
- Employee Turnover CalculatorMeasure staff turnover rate for a month or year.