deduct
B2Formal to Neutral
Definition
Meaning
To subtract or take away an amount from a total.
To arrive at a conclusion by reasoning; to infer (less common, especially in British English).
Linguistics
Semantic Notes
Primarily associated with quantitative subtraction in financial, logical, or scoring contexts. The logical inference sense is largely supplanted by 'deduce' in modern usage.
Dialectal Variation
British vs American Usage
Differences
Usage is highly similar. 'Deduct' is slightly more frequent in American English in financial contexts (e.g., tax deductions). The inference sense is archaic/rare in both but marginally more recognized in BrE historical texts.
Connotations
Neutral and procedural in both. Suggests a rule-based or contractual subtraction.
Frequency
More frequent in AmE by a small margin due to prominence of 'tax deduction' in public discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
deduct something (from something)be deducted (from something)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Deduct points from (a score)”
- “Deduct it from your pay”
Usage
Context Usage
Business
Standard term for subtracting expenses, taxes, or fees from invoices, salaries, or profits.
Academic
Used in mathematics, logic (deductive reasoning), and economics.
Everyday
Common in discussing bills, taxes, refunds, or game scores.
Technical
Used in accounting, payroll, taxation, and formal scoring systems.
Examples
By Part of Speech
verb
British English
- The bank will deduct the fee from your account.
- Points are deducted for late submissions.
- You can deduct your travel expenses.
American English
- They'll deduct the insurance premium from your paycheck.
- The referee deducted a point for the foul.
- Remember to deduct charitable contributions on your tax return.
adverb
British English
- Payments are made deductibly from the pension fund. (Rare)
- The costs are deductibly applied. (Rare)
American English
- Contributions are treated deductibly for tax purposes. (Rare)
- Fees were deductibly withheld. (Rare)
adjective
British English
- The deductible amount is clearly stated.
- Tax-deductible expenses.
American English
- Make sure it's a deductible business expense.
- The deductible portion of your medical costs.
Examples
By CEFR Level
- The shop will deduct £5 from the price.
- The teacher deducted two points for a mistake.
- Before paying you, we must deduct income tax.
- If you damage the property, the cost will be deducted from your deposit.
- Self-employed individuals can deduct legitimate business expenses from their taxable income.
- The system automatically deducts the monthly subscription fee.
- The tribunal ruled that the penalty clause allowed the company to deduct liquidated damages from the final payment.
- From the archaeological evidence, one can deduct certain patterns of social organisation.
Learning
Memory Aids
Mnemonic
Think: 'DEcrease by DUCTion' – you decrease a total by conducting a subtraction.
Conceptual Metaphor
REMOVAL IS SUBTRACTION (Taking something away from a container of value).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'deduce' (выводить умозаключение). 'Deduct' is вычитать (математика/деньги).
- Not equivalent to 'discount' (скидка). A deduction is a subtraction; a discount is a reduced price.
Common Mistakes
- Confusing 'deduct' (subtract) with 'deduce' (infer).
- Using 'deduct' intransitively (e.g., 'The tax deducts'). It requires an object: 'The tax is deducted.'
Practice
Quiz
In which context is 'deduct' LEAST appropriate?
FAQ
Frequently Asked Questions
'Subtract' is the general mathematical term. 'Deduct' is often used in specific contexts of taking away amounts of money, points, or quantities according to a rule, law, or agreement.
It is neutral to formal. In very informal speech, people might say 'take off' or 'knock off', but 'deduct' is standard in writing and professional speech.
Rarely. The typical pattern is 'deduct X from Y'. The passive form 'X will be deducted from Y' is also very common.
The primary noun is 'deduction'. It refers both to the act/amount subtracted and to a conclusion reached by reasoning.