You apply for SSI through the Social Security Administration, either online, by phone, or in person at your local Social Security office

The Social Security Administration (SSA) is the only place that takes SSI claims. You cannot apply through a state agency, a nonprofit, or any other organisation — they may help you prepare, but SSA makes the decision. You have three ways to start: online at ssa.gov, by calling 1-800-772-1213 (TTY 1-800-325-0778), or by walking into a Social Security office in your area.

Online is fastest if you are between 18 and 64 and have a Social Security number already. The phone line has wait times that vary by time of day and season, but you will reach a real person who can answer questions as you go. In-person appointments at your local office take longer to schedule but let you bring documents and ask for help on the spot.

Key Takeaways

  • Apply directly to the Social Security Administration online, by phone at 1-800-772-1213, or at your local Social Security office — no other organisation can take your claim.
  • You will need proof of age, citizenship or legal residency, Social Security number, and recent income and asset records before you start.
  • Online claims take about 15 minutes if you have all your information ready; phone and in-person claims may take longer but let you ask questions in real time.
  • After you submit, SSA will contact you for a phone interview within two weeks, and the full decision usually comes within 30 to 90 days.
  • If you are denied, you can ask for reconsideration or appeal — you have 60 days from the denial letter to request either one.

What documents to gather before you apply

SSA will ask for proof of several things, and having them ready speeds up the process. You need a birth certificate or passport (proof of age), proof you are a U.S. citizen or legal resident (passport, green card, or visa), and your Social Security number. You also need recent tax returns or pay stubs (proof of income for the past year), bank statements or investment records (proof of assets), and a list of any medical conditions and the doctors treating them.

If you do not have all of these, you can still start the claim — SSA will ask you to send them later. But having them ready means you will not have to make extra phone calls or trips to the office. If you are applying based on disability, bring medical records from your doctors, hospital visits, and any mental health treatment. SSA will request these officially, but having them on hand lets you answer questions more completely during your interview.

Applying online at ssa.gov

Go to ssa.gov and look for "Apply for SSI" in the main menu. You will create a my Social Security account if you do not have one already — this takes a few minutes and requires your Social Security number, email, and a password. Once you are logged in, the SSI application walks you through income, assets, living situation, and medical history. You can save your progress and come back later if you need to.

The online form takes about 15 minutes if you have your documents in front of you. At the end, you will see a confirmation number — write this down or take a screenshot. SSA will send you a letter within two weeks asking you to come in for a phone interview or to bring documents to your local office. You do not need to do anything else until they contact you.

Applying by phone at 1-800-772-1213

Call 1-800-772-1213 Monday through Friday, 7 a.m. to 7 p.m. your local time. Wait times are shortest early in the morning and on Tuesdays and Wednesdays. When you reach someone, tell them you want to apply for SSI. They will ask you the same questions as the online form — income, assets, living situation, medical history — and you can ask them to explain anything you do not understand.

The phone interview usually takes 30 to 45 minutes. At the end, the representative will give you a confirmation number and tell you what happens next. They may schedule your in-person interview right then, or they may tell you SSA will call you back. If you are deaf or hard of hearing, use the TTY number 1-800-325-0778, or call the regular number and ask for a relay service.

Applying in person at your local Social Security office

Find your nearest office at ssa.gov/locator or call 1-800-772-1213 to ask for the address. You can walk in during business hours, but wait times are often long — one to three hours is common. Many offices now let you book an appointment online or by phone, which cuts your wait time to 15 to 30 minutes. Bring all your documents with you: birth certificate, proof of citizenship, Social Security card, pay stubs or tax returns, bank statements, and medical records if you have them.

The representative will fill out the application with you, ask questions about your situation, and tell you what to expect next. They can also answer questions about what SSA needs from you and when you should hear back. If you do not speak English, bring someone to interpret, or ask the office if they have an interpreter available.

What happens after you submit your claim

Within two weeks, SSA will contact you by phone or mail to schedule an interview. This is usually a phone call with a claims representative who will go over your application again and ask follow-up questions. They may also ask you to have your doctor send medical records or to go for a medical exam that SSA pays for. This part of the process can take four to eight weeks.

After the interview and medical review are done, a decision-maker at SSA will review everything and make a decision. You will get a letter in the mail that says whether you are approved, denied, or approved for a different amount than you asked for. The whole process from application to decision usually takes 30 to 90 days, though it can take longer if SSA needs more medical information or if your case is complex.

If you are denied or disagree with the decision

If SSA denies your claim or approves you for less than you need, you have the right to ask them to reconsider. You have 60 days from the date on the denial letter to request reconsideration. You can do this by calling 1-800-772-1213, visiting your local office, or mailing a written request to the address on your denial letter.

Reconsideration means a different decision-maker will review your case from the start. You can send new medical records, new income information, or a written statement explaining why you disagree. If you are denied again after reconsideration, you can request a hearing before an administrative law judge. This takes longer — usually six to twelve months — but you get to present your case in more detail and bring witnesses or a representative if you want.

Getting help with your application

You do not have to apply alone. A family member, friend, social worker, or legal aid attorney can help you gather documents, fill out the form, or prepare for your interview. Some nonprofits and legal aid organisations offer free help with SSI claims, especially if your income is very low. You can search for free legal help in your area at lawhelp.org.

If you hire a representative — a lawyer or accredited agent — they can charge you a fee only if you win your case, and SSA has to approve the fee. The representative will sign a form saying they are working for you, and SSA will send them copies of letters and decisions. Having a representative does not speed up the process, but it can help if your case is complicated or if you have been denied before.

Frequently Asked Questions

Can I apply for SSI if I do not have a Social Security number yet?

No, you need a Social Security number to apply. If you do not have one, you can get one for free from the Social Security Administration. Call 1-800-772-1213 or visit your local office to ask how to get a number. The process takes a few weeks, so get one as soon as you know you need it.

What if I do not have a birth certificate or proof of citizenship?

Tell SSA what you do have — a passport, driver's license, school records, or hospital records can sometimes work as proof of age. For citizenship, a green card or visa counts. If you have none of these, SSA can sometimes accept a statement from someone who knew you at birth. Ask your local office what documents they can accept in your situation.

How long does it take to hear back after I apply?

SSA will contact you within two weeks to schedule an interview. The full decision usually comes within 30 to 90 days, but it can take longer if they need medical records from your doctors or if you need a medical exam. You will get a letter in the mail with the decision — do not assume you were denied if you do not hear anything for a few weeks.

Can I apply online if I am over 65?

You can start online, but SSA may ask you to finish by phone or in person. If you are already getting Social Security retirement benefits, you may be able to switch to SSI online. Call 1-800-772-1213 to ask whether the online form will work for your situation.

What if I miss the deadline to appeal my denial?

If you miss the 60-day deadline to request reconsideration, you can still appeal, but you will need to explain to SSA why you missed the deadline. Write a letter to your local office or call 1-800-772-1213 and ask about your options. Missing the deadline does not close your case forever, but it makes the process more complicated.