Free Online Tax & Business Calculators

7 free Tax & Business Calculators with documented formulas and assumptions. Results are estimates and do not replace professional advice where noted.

Tax & Business (7)

Calculate GST, VAT, and other tax amounts with inclusive/exclusive breakdowns.

Estimate tax liability using income and a tax rate you specify.

Calculate discounted prices, savings, and final prices.

Calculate profit, margin, and markup from revenue and cost.

Simplify ratios or solve proportions.

Calculate return on investment and annualized returns.

Find the sales volume needed to cover your business costs.