Most first proposals get built backward. You read the statement of work, get excited about the technical approach, and start writing. Section L and Section M sit in the back of the solicitation, so they get skimmed. That is the mistake. Those two sections decide the proposal before you write a word of the technical approach.
Every federal solicitation that uses the Uniform Contract Format is broken into four parts. Part IV holds Sections K, L, and M (FAR 15.204-1). Section K is representations and certifications. Section L and Section M are the two you actually have to work from.
Section L: the instructions
Section L is titled "Instructions, Conditions, and Notices to Offerors." It is where the contracting officer puts everything not covered elsewhere: how to format your proposal, what to submit, page limits, due date, submission method, and how to organize your response. FAR 15.204-5 directs the contracting officer to use this section to guide offerors "in preparing proposals or responses to requests for information," and it can require you to split your proposal into separate volumes: administrative, management, technical, past performance, and pricing (FAR 15.204-5).
Section L is a checklist, not a suggestion. If it says technical volume capped at 15 pages, font no smaller than 11 point, past performance in a separate volume, that is exactly what gets checked before anyone reads your content. Proposals get thrown out on Section L noncompliance alone. Not because the work was weak. Because the volume was 17 pages or the wrong file format.
Section M: the scoring
Section M is "Evaluation Factors for Award." It lists every factor and subfactor the government will use to score your proposal and states how important each one is relative to the others. FAR 15.204-5 requires the contracting officer to "identify all significant factors and any significant subfactors that will be considered in awarding the contract and their relative importance" (FAR 15.204-5).
Section M also states how price and non-price factors relate to each other. It uses standard phrasing from FAR 15.304(e) to spell out whether technical merit outweighs price, whether they are roughly equal, or whether award goes to lowest price among technically acceptable offers (FAR 15.304).
This is the part people underuse. Section M is the answer key. If past performance is worth more than technical approach, that is where your writing hours go. If price is the deciding factor among technically acceptable bids, over-engineering the technical volume does not move the needle.
Why L and M have to be read together, first
Section L tells you what to submit. Section M tells you how it gets judged. Read separately, they are instructions and a rubric. Read together, before you write anything, they tell you exactly what to build and in what order of effort.
The practical move: build your outline directly from Section L's structure, then weight each section's depth based on Section M's stated factors. A factor Section M calls "most important" gets your best writing and your SME's time. A factor listed last gets covered, accurately, and left alone.
We do this scoring pass automatically. When we pull a solicitation apart, Section L and Section M get parsed out first, before the statement of work, because they are what actually determines whether a technically strong proposal wins or gets bounced on a formatting rule nobody flagged in time.
Nobody can guarantee an award for following this order. It puts your effort where the government said it would look, and it keeps you from losing on a page-count rule instead of the merits.
Turning L and M into an actual checklist you can work from is its own step, and our compliance matrix walkthrough covers how to build one before you write a word of the proposal itself.
Related reading
- How to Write a Government Contract Proposal (Section-by-Section)
- How AI Bid Analysis Actually Works (No Black Box)