Free Online Finance Tools

Managing money shouldn't require expensive software or an accounting degree. Whether you're a freelancer in London invoicing a client, a small business owner in New York working out payroll, or just trying to see what your next paycheck actually looks like after tax, QuickToolKit's finance tools handle the maths for you — instantly, in your browser, with no account required. The Invoice Generator creates professional invoices in GBP or USD, complete with UK VAT or US tax fields, ready to download as a PDF in seconds. The Salary Tax Calculator breaks down UK income tax and National Insurance, or US federal tax brackets, so you can see your real take-home pay before payroll runs. Splitting a bill or working out a fair tip takes one screen with the Tip Calculator, and if you're weighing up a car loan, mortgage, or personal loan, the Loan Calculator shows monthly repayments, total interest, and a full amortisation schedule. Every tool here accounts for the everyday realities of UK and US finances — different tax systems, different currencies, different conventions — so the numbers you get back match what you'd see on a real invoice, payslip, or loan agreement. Nothing is stored on our servers; your figures stay in your browser.