Know what you owe, what you earn, and what to charge — in seconds.
70 free tools for taxes, pricing, loans, invoices, and PDF work. Verified 2026 rates, everything runs in your browser, no signup.
Business calculators
Profit, tax, loans, pricing, fees
Tax calculators
Take-home pay, 1099, GST/HST, VAT — US, CA, UK, AU
Invoice tools
Invoice, quote, receipt, payment terms
PDF tools
Merge, split, edit, sign, convert
Start fast
Popular tools
Open one of the common workflows or browse the full tool index.
Free tools for real business work.
Calculate profit, prepare invoices, or finish PDF tasks without creating an account.
One place for the numbers and documents a small business runs on
Running a business, freelancing, or managing a side project means answering the same money questions over and over. What is my profit margin? What will my paycheck actually be after tax? How much should I charge per hour? When is this invoice due, and what late fee can I add? CalcBusiness brings those answers together in one fast, free place so you are not juggling a dozen sites and spreadsheets to run the day-to-day.
Everything is built to be genuinely useful rather than just a form. Calculators show the formula and a worked example. Tax tools cite their official sources and the date they were verified. Invoice and PDF tools produce clean, professional documents that download straight to your device. There is no signup, and nothing you type is sent to a server.
Business & tax calculators
Work out profit margin and markup, break-even point, loan payments, freelance rates, and sales tax without a spreadsheet. Each calculator shows the formula behind the result and a worked example, so you can check the math and understand it rather than just copy a number.
Explore business & tax calculatorsTake-home pay & tax tools
Estimate your real paycheck after federal tax, FICA, and state tax across all 50 US states plus DC, then compare Canada, the UK, and Australia. The rates are drawn from official 2026 figures — the IRS, the CRA, HMRC, and the ATO — and every page shows when the data was last verified.
Explore take-home pay & tax toolsInvoice & billing documents
Create professional invoices, quotes, receipts, credit notes, purchase orders, and deposit invoices as clean PDFs. Track invoice numbers, calculate payment due dates and late fees, and log hours on a timesheet that feeds straight into an hourly invoice.
Explore invoice & billing documentsPDF tools
Merge, split, compress, rotate, convert, sign, and fill PDFs entirely in your browser. Your files are never uploaded to a server, which keeps contracts, tax forms, and anything with personal information private on your own device.
Explore pdf toolsWhy people use CalcBusiness
Accuracy you can check. Financial tools are only worth using if you can trust the output. That is why calculators expose the formula and tax tools name their sources and verification dates instead of asking you to take a number on faith.
Privacy by design. The tools run locally in your browser. Client details on an invoice, a signed contract, or the figures in a take-home calculation stay on your device — nothing is uploaded.
No friction. No account, no email wall, no trial countdown. Open a tool, get your answer, move on.
Frequently asked questions
Are these tools really free?
Yes. Every calculator and tool on the site is free to use with no account, no trial, and no paywall. The site is supported by advertising, not subscriptions.
Do I need to create an account?
No. Nothing here requires a signup or login. You can open any tool and use it immediately.
Where does the tax data come from?
Tax figures come from official government sources — the IRS and state revenue departments in the US, the CRA in Canada, HMRC in the UK, and the ATO in Australia. Each tax page shows the sources and the date the data was last verified.
Is my data private?
The calculators and PDF tools run in your browser. Invoice details, PDF files, and the numbers you enter are processed on your device and are not uploaded to a server.
Are the results financial or legal advice?
No. The tools give estimates and general information to help you plan. For decisions with real consequences, confirm the figures with a qualified professional or your official records.