Every federal contract is written on top of one rulebook: the Federal Acquisition Regulation (FAR). You don’t need to memorize it, but you do need to know how it’s organized and where to look — because the FAR determines what you can be required to do, how you get evaluated, and what obligations flow down to your subcontractors. This guide is the orientation.

What the FAR is

The FAR is the government-wide regulation for how federal agencies buy goods and services. It lives in Title 48 of the Code of Federal Regulations (48 CFR). It binds both the government (how it must run procurements) and contractors (the clauses you agree to when you accept an award).

How it’s organized

The FAR is divided into 53 parts, grouped into subchapters. A few parts contractors meet constantly:

  • Part 2 — definitions (the vocabulary the rest relies on).
  • Part 12 — acquisition of commercial products and services.
  • Part 13 — simplified acquisition (smaller buys).
  • Part 15 — negotiated procurements (the source of “Sections L & M”).
  • Part 19 — small business programs and set-asides.
  • Part 31 — cost principles (what’s an allowable cost).
  • Part 52 — the actual clauses and provisions that get inserted into solicitations and contracts.

Citations look like FAR 52.219-14 — part 52, then the specific clause.

Clauses and provisions

  • A provision applies to the solicitation (instructions to offerors, representations and certifications).
  • A clause applies to the contract (your ongoing obligations once awarded).

Solicitations often incorporate clauses by reference — a list of clause numbers rather than full text. Don’t skip them: “incorporated by reference” clauses are just as binding as ones printed in full, and some carry serious obligations.

Flow-downs

Many clauses are mandatory flow-downs — if you’re the prime, you must pass them to your subcontractors. Missing a required flow-down is a compliance failure, so teaming agreements and subcontracts need to carry them through.

Agency supplements

The FAR is the floor; agencies add their own supplements on top, also under 48 CFR:

  • DFARS — Department of Defense (with PGI guidance).
  • HSAR, GSAR, AGAR, and others for civilian agencies.

When you sell to DoD, you comply with both the FAR and DFARS.

How to actually use it

You won’t read the FAR cover to cover. Instead: when a solicitation cites a clause, look it up; when you’re unsure whether a cost is allowable, check Part 31; when a set-aside question comes up, check Part 19. Treat it as a reference you navigate, not a book you memorize — and track changes to the parts that touch your work.

How PursuitAI helps

PursuitAI’s Regulatory Radar surfaces FAR and agency-supplement (48 CFR) rule changes as they publish — filtered to your target agencies and flagging significant actions — so revisions to the clauses and parts that affect your bids reach you with lead time, not as a surprise in your next solicitation.

A word of caution

The FAR is detailed and consequential, and specific obligations depend on the exact clauses in your solicitation and contract. This is an introduction, not legal advice — read the governing clauses in full and consult procurement counsel on anything that affects your obligations or risk.