A Common Access Card, or CAC, serves as the military's standard identification and security credential for active duty personnel, military retirees, Department of Defense civilians, and eligible family members. If you hold one of these cards, you've likely used it to access military installations, conduct official business, or prove your identity for military-related services. But here's what many CAC holders don't realize until it's too late: your card has an expiration date, and renewing it requires specific steps that vary depending on your status and location.
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The renewal process isn't complicated, but it does require you to take action before your card expires. Unlike some documents that can be renewed through the mail or online, CAC renewal almost always means scheduling an in-person appointment at a Real-Time Automated Personnel Identification System (RAPIDS) site. These are physical locations on military installations or certain civilian facilities where trained personnel verify your information and produce your new card.
Understanding the renewal timeline is crucial. Most CACs are valid for five years from the date of issue, though some cards—particularly those for civilians—may have different validity periods. If you wait until your card is about to expire, you may face long wait times or difficulty scheduling an appointment during peak renewal seasons. Military installations often experience scheduling crunches around holidays and during major transitions when personnel rotate.
Your renewal appointment is where the actual card gets created. During this visit, your identity and current information are verified, your photograph is taken (or updated), and your new card is issued on the spot in most cases. Without scheduling this appointment, your old card will simply expire, and you won't be able to renew it remotely. This makes scheduling your appointment one of the most important steps in keeping your credentials current.
Takeaway: CAC renewal requires an in-person appointment at a RAPIDS site. Plan to schedule this appointment at least a few weeks before your card expires to avoid scheduling conflicts and gaps in your active credentials.
The first step in scheduling your renewal appointment is locating the RAPIDS site where you'll need to go. RAPIDS sites exist on military installations across the United States and at some overseas locations. If you're an active duty service member, you'll most likely use the RAPIDS site on your home installation. Military retirees and their family members have more options—you can typically use any RAPIDS site, whether it's on an installation near your home or at a location more convenient to your work or schedule.
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The official Department of Defense RAPIDS scheduling system maintains a searchable database of all RAPIDS locations. You can access this by visiting the Defense Manpower Data Center (DMDC) website, where you'll find a map-based tool that shows RAPIDS sites by state and installation. Simply search for your state or the closest military installation to your location, and the system will show you which sites are available and their hours of operation.
Hours vary significantly between locations. Some larger installations have RAPIDS sites that operate Monday through Friday during standard business hours—typically 8 a.m. to 4 p.m. with a lunch break—while other locations may offer extended hours or Saturday appointments. Some installations limit appointments to military-connected individuals with a specific status, so a site that's open to active duty personnel might have different policies for civilians or family members. When you find your nearest site, take note not just of the address but also any specific instructions about access to the installation itself.
If you're stationed overseas or live far from any installation, you have other options. Some military treatment facilities (hospitals and clinics) on installations offer RAPIDS services, and certain locations have contracted with civilian facilities to provide CAC services in remote areas. The DMDC website will indicate which sites offer which services, and some sites specialize in rush appointments or walk-ins for emergency situations.
Installation access can affect your appointment. Many military bases require a valid ID to enter, and if your CAC is expired, you'll need to bring alternative identification and possibly arrange for a visitor pass or security clearance ahead of time. This is especially important if you're renewing because your card is already expired. Contact your nearest RAPIDS site directly to ask about their procedures for people entering the base with an expired military ID.
Takeaway: Use the DMDC RAPIDS locator to find sites near you, check their hours and any access requirements for the installation, and note any special procedures for entering the base if your card is expired. Calling ahead is worth five minutes of your time to avoid showing up unprepared.
Walking into your RAPIDS appointment unprepared is one of the most common reasons people have to reschedule. The good news is that the documentation requirements are straightforward and don't change often. The bad news is that bringing the wrong documents—or incomplete versions—means you won't be processed and will need to schedule another appointment.
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You'll need two forms of identification. One must be government-issued with a photo, such as your passport, driver's license, or state ID card. Your second form of ID can be a Social Security card, birth certificate, or even a military dependent ID if you have one. The reason RAPIDS requires two forms is simple verification: they're confirming that you are who you claim to be before they issue you a new card with your access privileges embedded.
Bring your current CAC, even if it's expired. The RAPIDS personnel will deactivate it when they issue your new card. If your card is lost or damaged beyond use, bring documentation showing the circumstances—a lost-and-found report, a police report if applicable, or a statement from your commander or supervisor explaining the situation. If your card was damaged in a way that makes the information unreadable, bring it anyway; RAPIDS staff have seen every type of damage and can usually work with partial cards.
You'll need proof of your current military or civilian status and your Social Security number. If you're active duty, your status is verified through military databases, but bring your military orders or a statement from your unit if you've recently transferred. If you're a retiree, bring your retirement documents or military ID card showing your retired status. Civilian Department of Defense employees should bring their civilian ID or a letter from their employing agency. Family members should bring documentation of their relationship to the sponsor—a marriage certificate, birth certificate, or adoption papers—along with the sponsor's military ID or retirement documents.
For address changes, bring proof of your current residence. This can be a utility bill, lease agreement, mortgage statement, or any official mail sent to your current address within the last 60 days. If you've moved recently, RAPIDS will want to update their records, and having documentation prevents delays. Name changes require certified copies of your marriage certificate, divorce decree, or court-ordered name change documentation.
Takeaway: Pack your two forms of ID, your current (even if expired) CAC, proof of military or civilian status, your Social Security number, and proof of your current address. Bring originals, not copies, unless you're specifically told otherwise. Taking 10 minutes to gather these before your appointment prevents last-minute scrambling.
Most CAC renewal appointments are scheduled through the online RAPIDS appointment system rather than by phone. This system is designed to reduce wait times, give you control over which time slot works for your schedule, and provide confirmation of your appointment. The system is available 24/7, which means you can schedule an appointment at 11 p.m. on a Sunday if that's when you have time to think about it.
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To access the scheduling system, you'll need your Social Security number and date of birth. The system verifies your identity using these data points before showing you available appointment times. Once you log in, you'll see a calendar view of the RAPIDS site you selected, with open appointment slots highlighted. The system typically displays appointments for the next 30 to 60 days, depending on the site's current capacity and staffing.
Most RAPIDS sites schedule appointments in 30-minute blocks. When you select your time slot, you'll be asked to confirm your personal information and contact details. This is where any recent changes to your address, phone number, or name should be entered. The system will ask you to verify this information during your appointment, so make sure what you enter now matches what you'll bring in documentation. You'll receive a confirmation number and, if you provided an email address, a confirmation email with your appointment details, location address, parking information, and what to bring.
Some installations have their own scheduling portals separate from the
This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.