47 CFR §27.1106

1. (a)Small business.
   1. (1)A small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $55 million for the preceding five (5) years.
   2. (2)A very small business is an entity that, together with its affiliates, its controlling interests, and the affiliates of its controlling interests, has average gross revenues not exceeding $20 million for the preceding five (5) years.
2. (b)Bidding credits. A winning bidder that qualifies as a small business as defined in this section or a consortium of small businesses may use the bidding credit specified in § 1.2110(f)(2)(i)(C) of this chapter, subject to the cap specified in § 1.2110(f)(2)(ii) of this chapter. A winning bidder that qualifies as a very small business as defined in this section or a consortium of very small businesses may use the bidding credit specified in § 1.2110(f)(2)(i)(B), subject to the cap specified in § 1.2110(f)(2)(ii) of this chapter.
3. (c)Rural service provider bidding credit. A rural service provider, as defined in § 1.2110(f)(4) of this chapter, which has not claimed a small business bidding credit may use a bidding credit of 15 percent as specified in § 1.2110(f)(4)(i), subject to the cap specified in § 1.2110(f)(4)(ii) of this chapter.