Follow the steps to fill out the GSA 1390A form online.

1. Click the ‘Get Form’ button to obtain the form and open it for editing.
2. In the 'Prepared by' section, enter the name of the person who is responsible for preparing the report.
3. Fill out the 'Mailing Address of Preparer' field with the complete mailing address.
4. Enter the date you are preparing the report in the 'Date Prepared' section.
5. Select the reporting quarter from the available options to indicate which quarter the report covers.
6. Specify the region related to the report in the 'Region' field.
7. Input the cost code associated with the report in the 'Cost Code' section.
8. Detail the services or staff offices in the 'Services/Staff Offices Office Symbol' field.
9. Provide the metered mail serial number in the 'Metered Mail Meter Serial Number' section.
10. Indicate the total postage purchased in dollars in the 'Postage Purchased ($)' field.
11. Document the amount of postage spent in dollars in the 'Postage Spent ($)' field.
12. Record the total number of pieces of mail prepared in the 'Total Pieces of Mail' section.
13. Fill in your contact name, mailing address, and telephone number for follow-up inquiries.
14. Enter the name of the meter vendor in the corresponding field.
15. Review all entered information for accuracy, then save your changes, download, print, or share the final completed report as needed.

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