Standard Deduction
DEFINITION OF 'STANDARD DEDUCTION'
A base amount of income that is not subject to tax and that can be used to reduce a taxpayer's adjusted gross income (AGI). A standard deduction can only be used if the taxpayer does not choose the itemized deduction method of calculating taxable income. The amount of the standard deduction is based on a taxpayer's filing status, age and whether he or she is disabled or claimed as a dependent on someone else's tax return.