Free Business & Tax Calculators — VAT, ROI, Profit Margin & More

Calculate the right selling price from your cost price. See your markup percentage and profit margin side by side so you never underprice a product.

Find your gross and net profit margin instantly — enter revenue and costs to see exactly how much of every sale you keep.

Find exactly how many units you need to sell before your business turns a profit — enter fixed costs, selling price, and variable cost per unit.

Add or remove sales tax from any price at any rate. Works for any country, state, or region — ideal for US sales tax, Canadian GST/HST, and more.

Convert salary between annual, monthly, weekly, and hourly figures. Includes tax deduction estimates so you can see gross and net pay side by side.

Calculate your ideal freelance hourly rate or build an accurate project quote — factor in hours, expenses, tax, and your target income.

Add or remove VAT from any price in seconds. Enter your amount and VAT rate to instantly see net price, VAT amount, and gross total.

Measure the return on any investment or marketing campaign. Enter your cost and gain to instantly calculate ROI as a percentage — simple or annualised.

Calculate the discounted price, savings amount, and percentage off for any product. Useful for sales pricing, bulk discounts, and promotional offers.

Calculate the ROI of your rental property or real estate investment. Enter your purchase price, expenses, income, and sale value to instantly calculate your real estate ROI and investment return.

Measure the return on your marketing campaigns. Enter your marketing costs and revenue generated to instantly calculate marketing ROI and evaluate campaign profitability.

Calculate your solar panel ROI and estimated savings. Enter your installation cost, annual energy savings, and incentives to instantly see your solar investment return and payback.

Measure the return on employee training programs. Enter your training costs and estimated business benefits to instantly calculate employee training ROI and workforce investment value.

Enter your gross salary, filing status, and state tax rate to instantly see your exact net take-home pay after 2026 federal income tax, Social Security ($184,500 wage base), Medicare, and optional 401(k).