Georgia Form G-4 is the state withholding certificate you give your employer so the right amount of Georgia income tax comes out of each paycheck. You fill in your name and Social Security number at the top, pick a filing status and allowance count on Lines 3 through 5, add any extra dollar amount you want withheld on Line 6, and summarize the result on Line 7. Then you sign it and hand it to your employer’s payroll or HR department. Georgia law requires a signed certificate on or before your first day of work, and if you don’t submit one your employer will withhold at the highest default rate: single with zero allowances.1Georgia Department of Revenue. Form G-4 – State of Georgia Employee’s Withholding Allowance Certificate2Justia. Georgia Code 48-7-102 – Withholding Exemption Status
You can download the current form from the Georgia Department of Revenue website.3Georgia Department of Revenue. G-4 Employee Withholding It is separate from the federal W-4. The W-4 controls federal withholding; the G-4 controls Georgia withholding only. You need both.
Filling In the Form Line by Line
Have your Social Security number and current home address ready. The top of the form takes your name, address, and SSN. The numbered lines do the work:
Line 3 — Filing status and personal allowance. Choose Single, Married Filing Jointly, Married Filing Separately, or Head of Household, and enter the personal allowances that go with it. A single filer claiming themselves enters 1. A married couple filing jointly with only one working spouse can claim 2.
Line 4 — Dependent allowances. Enter the number of dependents you support, such as children or qualifying relatives.
Line 5 — Additional allowances from the worksheet. The form has a worksheet for things like itemized deductions or tax credits that reduce your overall liability. If the worksheet produces additional allowances, enter that number here.
Line 6 — Extra withholding. If you want a specific additional dollar amount pulled from each paycheck on top of what the allowances produce, enter it here. This is useful when you have freelance income, investment gains, or other earnings with no employer withholding behind them.
Line 7 — Summary. Enter the letter code for your filing status from Line 3 and the total allowances from Lines 3 through 5. That is the figure your employer’s payroll system actually uses.
The rule of thumb: more allowances means less tax withheld per paycheck, fewer allowances means more withheld. You want to land close to your real annual tax so you don’t owe a large balance in April and don’t give the state an interest-free loan all year.
Where the Form Goes After You Sign It
Submit the completed form to your employer’s payroll or HR department, not to the state. Many employers accept it through an online portal; paper works too. Updated withholding usually appears within one or two pay cycles.
There is one exception. If you claim more than 14 allowances or claim exempt status, your employer is required to mail the entire form to the Georgia Department of Revenue for review.1Georgia Department of Revenue. Form G-4 – State of Georgia Employee’s Withholding Allowance Certificate Your employer completes Line 9 and sends the form to the DOR’s Taxpayer Services Division in Atlanta. The employer handles the mailing, but it means the state will look closely at high-allowance and exempt claims.
Claiming Exempt Status
If you expect to owe no Georgia income tax, you may be able to stop withholding entirely by claiming exempt on Line 8. To qualify, you have to pass a two-part test under O.C.G.A. § 48-7-102:2Justia. Georgia Code 48-7-102 – Withholding Exemption Status
- You had no Georgia income tax liability for the entire previous calendar year, and
- You reasonably expect to owe no Georgia income tax for the current year.
Both must be true. This typically fits people whose income falls below the filing threshold, such as part-time students or retirees with minimal taxable income.
Exempt status is not permanent. It expires at the end of each calendar year, and you must file a new G-4 claiming the exemption by February 15 of the following year to keep it in effect. If you miss that date, or your circumstances change so that you now expect to owe tax, file a new G-4 with the appropriate number of allowances right away.
When to File a New G-4
Update your G-4 any time your personal situation shifts in a way that changes your withholding. Common triggers: getting married or divorced, having a child, losing a dependent, or starting a second job.
Georgia law puts a hard clock on certain updates. If your exemption status or number of dependents changes during the year, you must give your employer an updated certificate within ten days.2Justia. Georgia Code 48-7-102 – Withholding Exemption Status If you anticipate a change late in the year that will apply to the next calendar year, the statute gives you until December 20 to file the new certificate for the upcoming year.
Even when no law forces an update, it is worth revisiting the form if you had a big refund or a big balance due on your last annual return. A large refund means too much was withheld. A large balance means too little was withheld, and that can carry its own cost.
What Happens If You Underwithhold
If your withholding falls short of what you actually owe, the Georgia Department of Revenue charges a 9% annual penalty on the underpaid amount. Interest also accrues on unpaid balances at the federal prime rate plus 3%, reviewed and potentially adjusted each January.4Georgia Department of Revenue. Penalty and Interest Rates Those charges stack, so a meaningful shortfall gets expensive.
The simplest way to avoid the penalty is to make sure your total withholding covers at least your prior-year tax liability, mirroring the federal safe harbor approach. If you pick up extra income during the year that your current G-4 doesn’t cover, raise Line 6 on a new G-4 or send quarterly estimated payments directly to the DOR.
The Rate Behind the Math
Georgia uses a flat individual income tax rate, so your employer applies the same percentage to your wages regardless of how much you earn, adjusted by your allowances and any Line 6 amount. For tax year 2025, the rate is 5.19%.5Georgia Department of Revenue. Important Tax Updates Each allowance shelters a fixed portion of your income from that calculation, which is why the allowance count on Line 7 does most of the work in setting your take-home pay. Check the DOR’s Important Tax Updates page for the current rate when you fill out or revise your form.