Employer: Complete Line 9 and mail entire form only if the employee claims over 14 allowances or exempt from withholding. Form (G4) is to be completed and submitted to your employer in order to have tax withheld from your wages.This video is all about how to fill out the G-4 form (Georgia Tax Withholding) in 2021. How to fill out the Georgia Employee Withholding Allowance Certificate? 1. Enter your personal information in the specified fields. 2. This form is to be used to verify current employment as a Georgia educator. 1. Applicant Information. Once you are registered in Team Georgia MarketplaceTM, you will be able to access the Business Certification tab to complete your application. Enter 1 on box B for Married Filing Joint, both spouses working in Line 3. Additionally, the board of trustees shall have the power to adjust any erroneous payments.