Dictionary:

deduction

  (dĭ-dŭk'shən)

1. The act of deducting; subtraction.
2. An amount that is or may be deducted: tax deductions.
3. The drawing of a conclusion by reasoning; the act of deducing.
4. Logic.
   1. The process of reasoning in which a conclusion follows necessarily from the stated premises; inference by reasoning from the general to the specific.
   2. A conclusion reached by this process.

Any item or expenditure subtracted from gross income to reduce the amount of income subject to tax.

Also referred to as "allowable deduction".

Investopedia Says:
For example, if you make $40,000 and you have a deduction for $1,000, then your taxable income is reduced to $39,000.

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1. expense allowed by the Internal Revenue Service as a subtraction from adjusted gross income in arriving at a person's taxable income. Such deductions include some interest paid, state and local taxes, charitable contributions.

2. adjustment to an invoice allowed by a seller for a discrepancy, shortage, and so on.

noun

1. An amount deducted: abatement, discount, rebate, reduction. See increase/decrease.
2. A position arrived at by reasoning from premises or general principles: conclusion, illation, illative, inference, judgment. See reason/unreason.

Definition: conclusion, understanding
Antonyms: confusion

n

Definition: something subtracted
Antonyms: addition, increase, rise

Deducing or inferring the general from the particular; using particular statements as premisses from which future developments are shown to proceed logically. Put more simply, deduction begins with a theory from which a hypothesis is derived and then tested. An outstanding example is Burgess's concentric zone theory, based, as it was, on an observation of the Chicago of the late 1920s and early 1930s. Deduction provides laws from which outcomes may be predicted but such prediction plays little part in human geography because of the extreme complexity of the systems involved. Compare with induction.

For more information on deduction, visit Britannica.com.

The amount deducted from the contract sum by a change order.

A process of reasoning in which a conclusion is drawn from a set of premises. Usually confined to cases in which the conclusion is supposed to follow from the premises, i.e. the inference is logically valid. See also logical calculus, model theory, proof theory. In spite of his own claims, Sherlock Holmes's methods were not typically deductive, but rather exercises of abduction.

A logical method of reasoning from generalizations to specific relations or facts. Compare induction.

That which is deducted; the part taken away; abatement; as in deductions from gross income in arriving at net income for tax purposes.

In civil law, a portion or thing that an heir has a right to take from the mass of the succession before any partition takes place.

A contribution to a charity can be used as a deduction to reduce income for income tax purposes if the taxpayer meets the requirements imposed by law.

A cost or expense subtracted from revenue, usually for tax purposes.

The process of reaching a conclusion through reasoning from general premises to a specific premise. An example of deduction is present in the following syllogism: Premise: All mammals are animals. Premise: All whales are mammals. Conclusion: Therefore, all whales are animals.

Deduction can refer to one of the following usages:

• Deductive reasoning, inference in which the conclusion is of no greater generality than the premises
• Natural deduction, an approach to proof theory that attempts to provide a formal model of logical reasoning as it "naturally" occurs

Relating to taxation:

• Itemized deductions
• Standard deduction

See also

• Logic
• Venn diagram
• Inductive reasoning

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

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Dansk (Danish)
n. - fradrag, fradragsbeløb, deduktion

Nederlands (Dutch)
aftrek, inhouding, gevolgtrekking, deductie

Français (French)
n. - déduction, retenue, prélèvement sur, défalcation de, raisonnement déductif

Deutsch (German)
n. - Abzug, Schlußfolgerung

Ελληνική (Greek)
n. - αφαίρεση, έκπτωση, συμπέρασμα, (παρα)κράτηση, (φιλοσ.) απαγωγή

Italiano (Italian)
defalco, deduzione, sconto

Português (Portuguese)
n. - dedução (f)

Русский (Russian)
вычитание, вывод, вычитаемая сумма

Español (Spanish)
n. - rebaja, retención, deducción, descuento, reducción

Svenska (Swedish)
n. - avdrag, slutledning

中文（简体） (Chinese (Simplified))
减除, 减除额, 扣除

中文（繁體） (Chinese (Traditional))
n. - 減除, 減除額, 扣除

한국어 (Korean)
n. - 연역법, 삭감

日本語 (Japanese)
n. - 差引き, 控除, 推理, 演繹, 推論

العربيه (Arabic)
‏(الاسم) عمليه استنتاج من مبادئ عامه لحاله معينه, استنتاج, الجز او المقدار المقتطع‏

עברית (Hebrew)
n. - ‮מסקנה, ניכוי, הפחתה‬

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