Deduction 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. Related Terms: 1040 Form Audit Charitable Donation Home Office Expense Income Tax Internal Revenue Service - IRS Non-Refundable Tax Credit Student Loan Interest Deduction Tax Return Write-Off |