The SAM.gov registration is free.

1. Register in SAM to get your CAGE code
   Cost: Free
   Timeline: Up to 5 days
   Notes: Any business that wants to be a supplier to the federal government must register in SAM (System for Awards Management) to obtain an active CAGE code. To check to see if you have a CAGE, to modify your CAGE or to complete a new registration, click here to access our CAGE Registration Guide and to check the status of your registration.
2. Create Account in SAM.gov click here
   

Special Note: Registration is free. There are many companies that will contact you and offer help for a fee of as much as $2,000. They will save you very little time since you will need to provide them with all of your company information so they can enter it.