48 CFR §1413.202-70

1. (a)The purchase card shall be used in preference to other methods of procurement for purchases up to $3,000. Other small purchase methods (BPAs, imprest funds, third-party drafts, SF-44 forms, and purchase orders) may be used in lieu of the Government purchase card when it is more cost-effective or practicable.
2. (b)The purchase card shall be issued primarily to personnel outside of procurement offices to purchase products and services up to the micro-purchase threshold ($2,000 for construction).
3. (c)The purchase card may be used in procurement offices for purchases up to the simplified acquisition threshold ($50,000 if not interim FACNET certified) not to exceed individual warrant limitations.
4. (d)Each contracting activity shall develop more specific procedures for use of purchase cards.