This answer is for tax year 2017 and prior years.
- Your exemption is one (for yourself). Form 1040EZ Box 5, You should have a check mark in it.
For Tax Year 2018 and later, you will no longer use Form 1040-EZ, but instead use the Form 1040 or Form 1040-SR.
[Edited 3-12-2020|9:40 am PST]