This page brings together 75 business calculators for owners, founders, freelancers, finance teams and investors. Of these, 35 are global tools that handle the arithmetic every business runs wherever it trades — pricing, margins, break-even, cash flow, customer economics, valuation and depreciation — and the other 40 are written for a single market, Australia, Canada, the United Kingdom or the United States, including the tools that apply local tax and payroll rules. Start with the first group to understand how a business makes money, and turn to the second when a decision depends on where you trade.
Why most of these tools work anywhere
A margin, a break-even point or a cash runway is the same sum in Sydney, Toronto, Manchester or Chicago. The 35 global calculators hold no stored rates or thresholds at all: each works only from the figures you enter, so the arithmetic is identical in any country and any currency. That makes them a dependable first step for pricing a product, testing a budget or checking a set of accounts before tax enters the picture.
Business calculators by task
Pricing and margins
Setting a price starts with the pricing calculator, which turns a unit cost and a target margin into a selling price. Margin and markup are easily confused, so the markup vs margin calculator shows both from the same cost and price, the gross margin calculator works from revenue and cost of goods sold, and a contribution margin calculator shows how much of each sale is left to cover fixed costs.
Break-even and profit targets
The break-even analysis calculator finds the units and revenue needed to cover your costs, and the break-even and target profit calculator adds the volume needed to reach a profit goal. To see how sharply profit swings when sales move, an operating leverage calculator measures how much your fixed costs amplify the change.
Cash flow, working capital and funding
The cash burn and runway calculator divides the cash in the bank by net monthly spending, while the runway scenario calculator lets revenue grow month by month, so you can see whether growth arrives before the money runs out. The cash conversion cycle calculator counts the days cash is tied up in stock and unpaid invoices; when that gap needs funding, the invoice factoring calculator and a business loan calculator put a cost on two ways of bridging it.
Customers, subscriptions and advertising
For repeat-purchase and subscription businesses, the unit economics calculator shows whether each customer earns back what it cost to win them, the customer lifetime value calculator puts a figure on the whole relationship, and the CAC payback period calculator counts the months needed to recover acquisition spend. Further tools cover churn, MRR and ARR, and revenue projections, and for paid advertising the break-even ROAS calculator turns your gross margin into the minimum return a campaign must reach.
Valuation, cost of capital and depreciation
To value a company, the DCF valuation calculator discounts future free cash flows and adds a terminal value, the WACC calculator blends the cost of equity and debt into the rate used to discount them, and an EV/EBITDA calculator gives the multiple buyers compare. For assets, the straight-line depreciation calculator and its double declining balance and sum-of-the-years’-digits companions spread a cost over its useful life under standard accounting methods. Tax depreciation follows national rules, which is where the country tools take over.
Where local tax and payroll rules come in
Some questions cannot be settled by arithmetic alone. Whether to trade on your own or through a company, what a new hire really costs, how fast equipment can be written off and what you may charge on a late invoice all depend on the country you trade in. Each country collection is written for one market, and its tax and payroll tools apply that country’s rules.
Australia
The eight Australian business calculators include the super guarantee calculator, a payroll on-cost calculator that adds super, leave loading, workers compensation and state payroll tax to a salary, WorkCover premiums by state, the instant asset write-off, fuel tax credits claimed on the BAS, and a comparison of trading as a sole trader or through a company.
Canada
The six Canadian business calculators are built around the Canadian-controlled private corporation: the CCPC corporate tax calculator and the small business deduction, the passive income grind, salary vs dividend for paying yourself, whether incorporating saves tax or only defers it, and federal corporate tax instalments.
United Kingdom
The nine UK business calculators include tools that compare sole trader and limited company take-home pay, work out directors’ National Insurance and the Employment Allowance, value capital allowances and R&D claims, and add statutory late payment interest to an overdue commercial invoice. The business rates calculator follows the system in England; Scotland, Wales and Northern Ireland set their own.
United States
The 17 US business calculators cover federal tax and payroll — the cost of an employee with employer FICA and FUTA, Section 179, bonus depreciation and MACRS — alongside dollar-based versions of everyday tools such as a month-by-month cash flow forecast, startup costs and COGS. Permitted late fees vary by state and by contract, so the invoice late fee calculator applies the terms you set rather than a statutory rate.
How to read the results
Every calculator runs in your browser, updates as you type and draws a chart of the result. To get figures you can rely on:
- Take inputs from your own accounts, quotes or invoices rather than industry averages, and keep every figure on the same basis, monthly or annual.
- Check whether a percentage is a margin, measured against the selling price, or a markup, measured against cost; mixing the two up leads to underpricing.
- Change one input at a time to see what drives the answer, then compare a cautious, a realistic and a hopeful case side by side.
- Where a calculator relies on tax rates or thresholds, its page lists each figure with its source and the date it was last updated.
Each result is an estimate built from the numbers you enter and the rules the calculator models. For structure and tax decisions, take the figures to an accountant or the tax authority before acting on them.
All 75 calculators on this page are free to use, and none of them is part of the paid tier.
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