Business

Which business calculator do you need?

• Work out the profit margin from a cost and a selling price.

  • Profit Margin Calculator

• Set a selling price from cost and a desired markup, or convert between margin and markup.

  • Profit Margin Calculator

• Apply a percentage discount, or find the original price behind a sale price.

  • Discount Calculator

• Compare packages or products by price per unit rather than by pack size.

  • Unit Price Calculator

• Add VAT to a net amount or extract the VAT already included in a gross amount.

  • VAT Calculator

• Calculate a salary increase from a percentage, or weekly pay including overtime.

  • Pay Raise Calculator
  • Overtime Calculator

Margin, markup and stacking discounts

Margin is profit divided by the selling price; markup is profit divided by the cost. The same profit therefore produces a smaller margin percentage than markup percentage, and confusing the two is the fastest way to mis-price a product.

Discounts reduce the selling price, not the cost, so they cut directly into margin. Two successive discounts multiply rather than add: 20% followed by 10% is a 28% reduction from the original price, not 30%.

Tax, unit price and pay

VAT and similar taxes are usually expressed on a net amount, but the price on a shelf or invoice is often gross, so extracting the tax requires dividing by one plus the rate rather than subtracting the rate.

Unit price makes different pack sizes comparable, which is why it is the standard way to judge value on a shelf. Overtime and pay-raise tools apply the thresholds and rates you enter; employment rules differ by jurisdiction.

Before applying the result

• VAT and payroll rules differ by country and change over time — the tools apply the rates you provide.
• Overtime law, rounding and eligibility vary; treat overtime output as an estimate, not a legal calculation.
• Margin figures exclude fixed costs and overhead unless you build them into the cost you enter.