Deduct vs. subtract: what’s the difference?

Reviewed and edited by Lloyd Cooper, English.me team · 6 October 2024

The short answer

While subtract is generally used in mathematical contexts to describe the basic arithmetic operation of taking one number away from another, deduct is more frequently used in financial or accounting contexts, often relating to expenses or amounts being removed from a total amount, such as deductions from a salary or income.

What they have in common

Both deduct and subtract refer to the process of taking away or reducing an amount from a total. They are often used in mathematical or financial contexts to denote the operation of removal or deduction.

Examples

deduct

You can deduct your travel expenses when filing your tax return.
The insurance will deduct the deductible amount before reimbursing the claim.
After deducting the service fee, the remaining balance was transferred to your account.

subtract

If you subtract 5 from 10, you get 5.
The software allows you to easily subtract columns of numbers.
When you subtract the cost of goods sold, you can determine your gross profit.

Which one is more common?

Internet search results for “deduct” and “subtract”

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