NAICS code for consulting

541611, Administrative Management and General Management Consulting Services. Businesses primarily engaged in providing operating advice and assistance to businesses and other organizations on administrative management issues, such as financial planning and budgeting, equity and asset…

Often, yes. Also check 541618 (Other Management Consulting Services) and 541690 (Other Scientific and Technical Consulting Services). Pick the code for what you advise on: management (541611), other management consulting (541618), or scientific and technical consulting (541690). In SAM.gov you can list several NAICS codes and mark one as primary.

The one on the solicitation. Federal agencies assign one NAICS code to each solicitation, and the SBA size standard of that code decides whether you count as a small business for that bid.