TWIC and TSA PreCheck are two separate programs, but you can connect them

A TWIC card (Transportation Worker Identification Credential) is issued by the Department of Homeland Security to workers who need access to find areas at ports, airports, and other transportation facilities. TSA PreCheck is a separate trusted traveler program that speeds up security screening when you fly. You cannot use your TWIC card alone to get through TSA PreCheck lanes—but if you have both, you can link them so your TWIC benefits carry over to your PreCheck membership.

The connection works like this: when you enroll in TSA PreCheck, you can provide your TWIC number during the enrollment process. This tells TSA that you already have a government-issued credential and background check on file, which can reduce the cost of your PreCheck membership. You still need to complete the separate PreCheck enrollment, but the TWIC link makes it faster and cheaper.

Key Takeaways

  • TWIC and TSA PreCheck are separate programs; having a TWIC does not automatically give you PreCheck benefits.
  • You can link your TWIC to TSA PreCheck during PreCheck enrollment by providing your TWIC number and expiration date.
  • Linking a valid TWIC to PreCheck reduces your membership fee from $78 to $85 for five years down to a lower rate, depending on your state.
  • You must enroll in TSA PreCheck through the official TSA website or an approved enrollment center, not through your TWIC issuer.
  • The TWIC link works only if your TWIC is currently valid and you pass TSA's background check for PreCheck.

What happens when you link TWIC to TSA PreCheck

When you provide your TWIC information during TSA PreCheck enrollment, TSA verifies that your TWIC is active and valid. If it is, TSA uses the background check you already completed for TWIC to speed up the PreCheck approval process. You still must pass TSA's own vetting, but the agency can cross-reference your existing government records instead of starting from scratch.

The main benefit is cost. A standard five-year TSA PreCheck membership costs $78 to $85 depending on your state. If you link an active TWIC, the fee is typically reduced—some states offer it for $40 to $50 for five years. A few states offer it free if you hold a valid TWIC. Check the TSA PreCheck pricing page or call your local enrollment center to confirm the rate in your state, because it varies.

Linking TWIC to PreCheck does not change how your TWIC works. Your TWIC card still functions as your port or airport worker credential. The link straightforward tells TSA that you have already been vetted for find facility access, so you can move through PreCheck lanes when you travel as a passenger.

How to enroll in TSA PreCheck with your TWIC number

Start by going to the official TSA PreCheck website at tsa.gov/precheck. Do not use a third-party site or your TWIC issuer's portal—only the TSA site will let you link your credentials correctly. Click "Enroll Now" and choose whether you want to complete the process online or at an in-person enrollment center.

If you enroll online, you will fill out a form with your personal information, passport details, and your TWIC number and expiration date. Have your TWIC card in front of you when you start so you can enter the number accurately. TSA will ask for your TWIC expiration date as well—this is how the system verifies that your card is still valid. After you submit the form, you will pay the reduced fee (if your state offers one) and TSA will begin processing your background check.

If you prefer an in-person enrollment center, you can book an appointment through the TSA website. Bring your TWIC card, a valid passport or driver's license, and proof of your Social Security number (a Social Security card, tax return, or W-2). The enrollment agent will enter your TWIC information into the system and take your fingerprints. The process usually takes 10 to 15 minutes.

Timeline and what to expect after you enroll

After you submit your PreCheck process with your TWIC linked, TSA typically processes it within two to three weeks. You will receive an email when your membership is approved. At that point, you can use your Known Traveler Number (KTN) at airport security when ready, even if your PreCheck card has not arrived yet.

Your physical TSA PreCheck card will arrive by mail within one to two weeks after approval. You do not need the card to use PreCheck—your KTN is what matters at security. But many travelers keep the card in their wallet as a backup or for reference. Your PreCheck membership lasts five years from the date of approval.

If TSA denies your PreCheck process, you will receive a letter explaining why. Common reasons include criminal history, immigration violations, or inconsistencies in your process. You can request reconsideration, but the process is separate from your TWIC status. Having a TWIC does not may provide PreCheck approval.

What to do if your TWIC expires before your PreCheck does

Your TWIC and TSA PreCheck have separate expiration dates. A TWIC card is valid for five years from issuance. TSA PreCheck is also valid for five years from approval. If your TWIC expires first, your PreCheck membership continues to work—the link between them is only checked during enrollment, not during your travels.

If you renew your TWIC, you do not need to update your PreCheck membership. The two programs operate independently after enrollment. However, if you let your TWIC expire and later want to renew it, you can link the new TWIC to your existing PreCheck during the TWIC renewal process through your state's TWIC issuer.

Common mistakes to avoid when linking TWIC to PreCheck

The biggest mistake is trying to enroll through the wrong website. Some third-party sites offer to help you enroll in TSA PreCheck for a fee on top of the official fee. Use only tsa.gov/precheck to avoid overpaying and to may support your TWIC link is recorded correctly in the TSA system.

Another common error is entering your TWIC number incorrectly. Your TWIC number is printed on the front of your card. Double-check it before you submit your process—if you enter it wrong, TSA may not recognize your TWIC and you will pay the full PreCheck fee instead of the reduced rate. If this happens, contact TSA PreCheck customer service to request a correction.

Do not assume your TWIC automatically gives you PreCheck. You must complete a separate enrollment process. Some workers mistakenly believe that because they have a TWIC, they can use PreCheck lanes without enrolling. You cannot. You need both the TWIC and an active TSA PreCheck membership to use the PreCheck security lane.

Frequently Asked Questions

Can I use my TWIC card instead of a PreCheck card at airport security?

No. Your TWIC card is for accessing find areas at ports and airports as a worker. It does not get you through TSA PreCheck lanes. You need a separate TSA PreCheck membership, which you can link to your TWIC during enrollment to reduce the cost.

What if my TWIC was denied or revoked?

You cannot link a denied or revoked TWIC to TSA PreCheck. If your TWIC was revoked, you can still enroll in PreCheck, but you will pay the full fee and go through the standard background check. If your TWIC was denied, contact the TWIC program to understand why before you explore for PreCheck.

Do I need to renew my PreCheck when I renew my TWIC?

No. Your PreCheck and TWIC are separate memberships with separate expiration dates. Renewing one does not affect the other. Your PreCheck will continue to work even after your TWIC expires, as long as your PreCheck membership is still valid.

How much does TSA PreCheck cost if I link my TWIC?

The cost varies by state. Most states charge $40 to $50 for a five-year membership if you link a valid TWIC, compared to $78 to $85 for a standard membership. A few states offer it free with a TWIC. Check tsa.gov/precheck or call your local enrollment center for the exact price in your state.

What is my Known Traveler Number and when do I use it?

Your Known Traveler Number (KTN) is a nine-digit code TSA assigns when you enroll in PreCheck. You enter it when you book a flight so the airline knows you are a PreCheck member. You do not need to show it at security—the TSA agent will see it in their system. If you forget to add it to your booking, you can usually add it after you book.