A Small Disadvantaged Business (SDB) is a small business that is at least 51 percent owned by one or more individuals who are both socially and economically disadvantaged. SDB status makes a company eligible for bidding and contracting benefit programs involved with federal procurement. Businesses must be certified by the Small Business Administration (SBA) to qualify for SDB status. FAR Subpart 19.304 requires an SDB at the time of its offer (prime or subcontracting) to have certification from SBA or to have completed and submitted a SDB application.
The SBA defines socially disadvantaged groups as those who have been, historically, subjected to “racial or ethnic prejudice or cultural bias” within the larger American culture. Identified groups include African Americans, Asian Pacific Americans, Hispanic Americans, Native Americans, and Subcontinent Asian Americans. Members of other groups may qualify if they can satisfactorily demonstrate that they meet established criteria.
Small Business Certification 
Before you can begin a business with the government your business must obtain the proper certifications. The Federal government sets aside certain contract bid opportunities exclusively for small businesses. In order to compete for these contracts, you must first register as a vendor with the government.
As part of the registration process, you will be required to enter information about your company in the System of Awards Management (SAMS) database. In SAMS, you may self-certify yourself as a small business, but you must meet the Federal government’s definition of a small business.
Steps to Registering as a Federal Contractor 
- Obtain a D-U-N-S Number – You will need to obtain a Dun & Bradstreet D-U-N-S® Number. This is a unique nine-digit identification number for each physical location of your business. The assignment of a D-U-N-S Number is free for all businesses required to register with the federal government for contracts or grants. Visit the D-U-N-S Request Service to register.
- Register your Business with the SAMS – You need to register your business with the federal government’s System of Awards Management (SAM).
- Find the NAICS Codes for Your Company – North American Industry Classification System (NAICS) code for administrative, contracting and tax purposes. Read Identifying Industry Codes for more information.
- Obtain Past Performance Evaluations – Businesses interested in getting on the U.S. General Services Administration (GSA) Schedule for contracts should obtain an Open Ratings, Inc. Past Performance Evaluation
- The System for Award Management (SAM) has replaced the Central Contractor Registration (CCR)
AcqLinks and References:
- FAR Part 19 “Small Business”
-  Website: Small Business Administration (SBA)
- FAR Subpart 19.304
- Website: System for Award Management (SAM)
- SBA Small Disadvantaged Business Certification (SDB) Questions and Answers
- DoD Directive 4205.01 “DoD Small Business Programs”
- DoD Instruction 5134.04 “Director of Small and Disadvantaged Business Utilization”
- Website: DoD Office of Small Business Programs