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Deadweight Loss Calculator

Result

Calculated result 500 Based on the values entered.
↗ Finance

Deadweight Loss Calculator — free online calculator.

Formula

Deadweight loss = ½ × tax per unit × reduction in quantity.
  • Deadweight Loss Calculator calculates its result from Tax per unit, Quantity before, Quantity after. It uses the formula Deadweight loss = ½ × tax per unit × reduction in quantity.. Change any input to recalculate the result instantly.
  • The main inputs are Tax per unit, Quantity before, Quantity after. Enter them in the units and format shown in the calculator.
  • Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Deadweight Loss

Inputs
  • Tax per unit: 5
  • Quantity before: 1000
  • Quantity after: 800

Using Tax per unit = 5, Quantity before = 1000, Quantity after = 800, the calculated result is 500.

Sample result: Calculating…

Frequently asked questions

What does the Deadweight Loss calculate?

Deadweight Loss Calculator — free online calculator.

Which values should I enter?

Enter Tax per unit, Quantity before, Quantity after using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Deadweight loss = ½ × tax per unit × reduction in quantity..

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026