Primary Data Sources That Inform the Decision
Good bid/no-bid decisions are data-driven. SAM.gov is the authoritative source for active solicitations, set-aside designations, and agency points of contact. USAspending.gov shows historical award data by agency, NAICS code, and vendor, helping you identify likely competitors and typical contract values. The Federal Procurement Data System feeds USAspending, so the two sources are consistent for most award history queries.
For SBIR and research-oriented opportunities, Grants.gov and agency-specific forecast tools (such as the Navy's SeaPort portal or DHS's EAGLE Next Generation vehicle pages) provide pipeline intelligence. Reading agency acquisition forecasts, which most large agencies publish annually per the requirements of FAR 5.404, gives you advance notice of upcoming requirements so you can influence the statement of work before a solicitation drops.
Incumbent research is often overlooked but critical. Searching the FPDS database through USAspending for the existing contract number attached to a recompete tells you who holds the work, how long they have held it, and what the agency paid. That single data point dramatically changes your win probability assessment.