deduction

the act of subtracting (removing a part from the whole); "he complained about the subtraction of money from their paychecks"
the act of reducing the selling price of merchandise
something that is inferred (deduced or entailed or implied); "his resignation had political implications"
an amount or percentage deducted
a reduction in the gross amount on which a tax is calculated; reduces taxes by the percentage fixed for the taxpayer''s income bracket