How to Book and Prepare for Your CAC Appointment

What happens at a CAC appointment and where to book one

A CAC appointment is where you get your Common Access Card — the military ID that lets you access base facilities, use military healthcare, and handle financial transactions on post. You will meet with a Real ID-trained staff member who will verify your identity documents, take your photograph and fingerprints, and produce the card on the spot or within a few days depending on the location.

Most CAC appointments happen at a military installation's ID card office, though some bases contract with off-base vendors. The easiest way to find your nearest office and book a time slot is through the RAPIDS system (Real-time Automated Personnel Identification System), which is the official scheduling tool. You can also call your base's ID card office directly if you prefer to book by phone, or walk in without an appointment at some locations — though wait times for walk-ins are often longer.

If you are not sure which base or office serves you, start by searching your branch's ID card office locator online, or call your unit's administrative office. They can tell you which RAPIDS site is closest and whether that location takes appointments or walk-ins.

Key Takeaways

• You will need a valid government-issued photo ID, your Social Security card or birth certificate, and proof of your military status or dependent relationship to get a CAC.
• RAPIDS is the official system for booking CAC appointments and is available 24/7 online; you can also call your base's ID card office to schedule by phone.
• Bring originals of all required documents — photocopies are not accepted — and arrive 10 to 15 minutes early to allow time for check-in.
• The appointment itself usually takes 15 to 30 minutes, and you may receive your card the same day or pick it up within a week depending on your branch and location.
• If you are a dependent or retiree, you may need additional documents such as a marriage certificate, divorce decree, or proof of dependent status.

Documents you need to bring

The core documents are the same across all branches: a valid government-issued photo ID (driver's license, passport, or state ID), your Social Security card or certified birth certificate, and proof of your military status. For active duty, that proof is usually your orders or a letter from your command. For retirees, it is your retirement orders or DD Form 214. For dependents, it is your sponsor's military ID or a letter from their command stating your relationship.

Dependents also need to bring proof of their relationship to the sponsor — a marriage certificate if you are a spouse, a birth certificate if you are a child, or adoption papers if applicable. If you are a dependent of a retiree or deceased service member, bring the retirement orders or death certificate along with your relationship document. Divorced spouses need the divorce decree showing they retain dependent status.

Bring originals only. The ID card office will not accept photocopies, faxes, or digital images. If you do not have an original document, you will need to get one from the issuing agency before your appointment — the office cannot issue your CAC without it.

How to book through RAPIDS

Go to the RAPIDS website for your branch (Army, Navy, Air Force, Marines, or Coast Guard all have separate portals). You will see a map or search function where you enter your zip code or base name. Select the ID card office location you want to visit.

The system will show you available appointment slots, usually in 15-minute or 30-minute blocks. Pick a date and time that works for you. You will be asked to enter your name, Social Security number, phone number, and email address. The system will send you a confirmation email with your appointment number and instructions. Save that confirmation — you may need to show it when you arrive.

If the location you want is fully booked, RAPIDS will tell you when the next opening is. Some offices release new slots weekly, so check back a few days later if you need a sooner time. If you cannot find an appointment near you, call the ID card office directly; staff can sometimes fit in walk-ins or know about cancellations.

What to expect on the day of your appointment

Arrive 10 to 15 minutes early. Bring all your original documents in a folder or envelope so they do not get lost. Have your confirmation email or appointment number ready to show at check-in. If you are going to a base, have your military ID or dependent ID ready for the gate guard, or bring a letter from your sponsor's command stating you are authorized to be there.

At the ID card office, you will check in at the front desk and wait for your name to be called. When you go back, the staff member will review your documents, ask you to verify your personal information, and take a digital photograph. You will also be fingerprinted — usually electronically, though some locations still use ink. The whole process takes 15 to 30 minutes.

Before you leave, ask whether your card will be ready the same day or if you need to pick it up later. Some offices print cards on site; others send them to a central facility and mail them to you or hold them for pickup. If your card is ready the same day, you may receive it before you leave. If not, the office will give you a receipt showing when to return or where to collect it.

If you cannot make your appointment or need to reschedule

Log back into RAPIDS and cancel your appointment at least 24 hours before your scheduled time. This frees up the slot for someone else and lets you book a new one immediately. If you cancel less than 24 hours before, some locations may charge a no-show fee or require you to wait longer for your next opening.

If you miss your appointment without canceling, contact the ID card office by phone as soon as possible. Explain what happened and ask whether you can reschedule. Some offices will let you book again right away; others require you to wait a set number of days before you can book another slot. Repeated no-shows may result in a temporary suspension of your booking privileges.

What to do if you lose or damage your CAC

A replacement CAC follows the same process as a new one — you book through RAPIDS, bring your documents, and meet with ID card office staff. The difference is that you will also need to bring the damaged card or a police report if your card was lost or stolen. The office will deactivate the old card and issue a new one.

If your card was stolen, report it to your base's security office or local police and get a report number. Bring that report number to your appointment. The ID card office will use it to flag the old card in the system so it cannot be used fraudulently. Replacement cards usually cost a fee unless the damage was the office's fault.

Frequently Asked Questions

Can I get a CAC appointment the same day I call?

It depends on the location and how busy they are. Some offices keep same-day slots open for walk-ins or emergencies, but RAPIDS usually shows appointments weeks out. Call your ID card office directly and explain your situation — they may be able to fit you in or tell you which nearby location has the soonest opening.

What if I do not have my Social Security card or birth certificate?

You need one of them to prove your identity. Contact the Social Security Administration or your state's vital records office to request a replacement before your appointment. Getting a certified birth certificate usually takes one to three weeks, so plan ahead. Your ID card office cannot issue a CAC without proof of identity.

Do I need to bring my military ID to the appointment if I am getting my first CAC?

No — if you are getting your first CAC, you will not have a military ID yet. Bring your government-issued photo ID instead. If you are a dependent with no military ID, bring your sponsor's military ID or a letter from their command. The ID card office will verify your status through their system.

How long does it take to get my CAC after the appointment?

If the office prints cards on site, you may get yours the same day or within a few hours. If the card is sent to a central facility, it usually arrives within five to seven business days. The office will tell you at the end of your appointment when to expect it and whether you need to pick it up or if it will be mailed to you.

Can someone else pick up my CAC for me?

No. The ID card office will only release your CAC to you in person. You will need to show a photo ID that matches the name on the card. If you cannot pick it up yourself, contact the office and ask whether they can hold it longer or mail it to you instead.