Look at your tax return Form 1040 Line 8
You can view your Form 1040 at any time while accessing the 2018 online tax return. Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
Standard deductions for 2018
Single - $12,000 add $1,600 if age 65 or older
Married Filing Separately - $12,000 add $1,300 if age 65 or older
Married Filing Jointly - $24,000 add $1,300 for each spouse age 65 or older
Head of Household - $18,000 add $1,600 if age 65 or older