Which deduction?  The Standard Deduction?

For 2019 the standard deduction amounts are:

Single 12,200 + 1,650 for 65 and over or blind

HOH 18,350 + 1,650 for 65 and over or blind

Joint 24,400+ 1,300 for each 65 and over or blind

Married filing Separate 12,200 + 1,300 for 65 and over or blind

The Tax Cuts and Jobs Act has substantially increased the standard deductions beginning with tax year 2018.

For 2019, standard deductions are:

For a taxpayer under 65, not claimed as a dependent

• $12,200 for Single
• $24,400 for Married Filing Jointly, or Qualifying Widow(er) with dependent child
• $18,350 for Head of Household
• $12,200 for Married Filing Separately
• If you are over 65 or blind, add $1,300 for each instance if married or add $1,650 each instance if single or head of household