When applying as an individual, whether you are using the ATF Form 1, ATF eForm 1, ATF Form 4 or the ATF Form 5, you aren't required to complete the ATF 5320.23. These questions will be answered on the forms itself or on the eForm 1 application. This means that when you are applying for a tax stamp using the ATF's eForm website the ATF 5320.23 "Choose File" will be greyed out like shown below. This is normal for an individual applicant and nothing to worry about.
The payment is taken by the ATF as soon as you complete the payment screen. This is required in order to submit your application to the ATF. If you applied using the ATF's Form 1 paper application, the same is true. Your $200 tax payment is charged before your ATF Form 1 paper application moves to the next step.
The +4 Zip Code for the CLEO however isn't required at this time. There is no asterisk next to this field indicating that this field isn't required. You can however include the +4 Zip Code in the highlighted box if you choose to do so.
