WordReference English-Spanish Dictionary © 2014:

Principal Translations
deducción nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla"). (acto de sacar conclusiones)conclusion nnoun: Refers to person, place, thing, quality, etc.
  (more formal)deduction nnoun: Refers to person, place, thing, quality, etc.
 Era lógico llegar a esa deducción a la vista de los hechos.
 In view of the facts, it was logical to arrive at that conclusion.
deducción nfnombre femenino: Sustantivo de género exclusivamente femenino ("mesa", "tabla"). (reducción en pagos)reduction nnoun: Refers to person, place, thing, quality, etc.
 Logramos una deducción en la tasa de intereses.
 We got a reduction in the interest rate.
  Is something important missing? Report an error or suggest an improvement.

WordReference English-Spanish Dictionary © 2014:

Compound Forms:
deducción de impuestos,
deducción fiscal
loc nom flocución nominal femenina: Unidad léxica estable formada de dos o más palabras que funciona como sustantivo femenino ("casa de citas", "zona cero", "arma secreta").
(descuento)tax deduction nnoun: Refers to person, place, thing, quality, etc.
  tax deductible adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house."
 Los gastos relacionados con el trabajo aplican para la deducción de impuestos.
 Work-related expenses are applicable for tax deduction.
  Vehicle insurance is a tax deductible expense for self-employed individuals.This sentence is not a translation of the English sentence.
  Is something important missing? Report an error or suggest an improvement.

'deduccion' found in these entries
In the Spanish description:
English:

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