VAT Calculator
Add VAT to a net amount or remove VAT from a gross amount using a rate you enter. Country labels are suggestions, not a tax determination.
Open CalculatorFree Invoice & Business Calculators
Calculate taxes, due dates, late fees, discounts, rates and invoice totals with free tools built for business billing.
GST Calculator
Add or remove GST with a user-controlled rate. Select country terminology; India offers a CGST + SGST split or IGST option.
Open CalculatorSales Tax Calculator
Calculate tax on an amount or extract it from a tax-inclusive total using the rate and optional region label you provide.
Open CalculatorInvoice Due Date Calculator
Calculate a clear invoice due date from an invoice date and agreed payment terms. Business-day mode skips weekends only; public holidays are not included.
Open CalculatorInvoice Late Fee Calculator
Estimate a possible late fee from an invoice amount, due date, payment date and fee method. Use only terms that apply to your agreement.
Open CalculatorInvoice Discount Calculator
Compare a percentage or fixed discount and review the amount after discount. Optional tax can be calculated before or after the discount.
Open CalculatorMarkup Calculator
Turn a cost and markup percentage into a selling price. See gross margin too—markup and margin are different measures.
Open CalculatorProfit Margin Calculator
Calculate profit, gross margin and markup from a cost and selling price.
Open CalculatorHourly Rate Calculator
Estimate an hourly billing rate from target income, expenses, reserve, billable hours and working weeks.
Open CalculatorDay Rate Calculator
Estimate a consultant or contractor day rate after accounting for working days, non-billable days, costs and a profit buffer.
Open CalculatorFreelance Rate Calculator
Compare hourly, daily and project billing estimates from your income target, costs, reserve, available time and project hours.
Open CalculatorAmount to Words Converter
Convert a numeric invoice amount into English words for payment instructions or a draft invoice note.
Open CalculatorFrom pricing to payment
Use the tools to review a price, rate, discount or tax estimate, then return to the shared invoice generator. Calculator inputs stay local in this browser; only the values you choose to use are passed to the invoice.
Open the Invoice Generator →