Fill out the required information and submit your benefits application. • All DFCS locations have computers in their lobbies if you need web access.You can apply: Online; or; By calling our national toll-free service at 1-800-772-1213 (TTY 1-800-325-0778) or visiting your local Social Security office. Applying for ERS service retirement benefits is easier than ever! To apply for SSI, fill out the online application, call (800) 772-1772 or visit your local. Social Security office. Seniors who wish to apply for Georgia Medicaid can visit the Georgia Gateway Customer Portal and complete an application online. For senior citizens, you may be able to claim various tax deductions on both your State of Georgia and Federal Tax Filings. We offer two mandatory retirement plans: A defined benefit plan, the Teachers Retirement System of Georgia for non-exempt and exempt employees. Georgia is highly favorable for retirees in terms of tax friendliness.