What actually gets a business proposal rejected
Most proposal advice focuses on "sounding professional" — the real reasons proposals get rejected are almost always structural, not tonal.
Vague scope
"We will improve your marketing" tells a client nothing about what happens or when. "We will deliver 3 campaign concepts by week 2, execute the selected concept across 4 channels by week 6, and provide a performance report by week 8" tells them exactly what they're buying and when they'll see it.
No pricing clarity
Proposals that say "pricing available on request" or bury cost in a final paragraph lose to competitors who state it upfront with a clear breakdown. Ambiguity around cost reads as something being hidden, even when it isn't.
Missing timeline
A proposal without dates is a proposal the client has to interrogate before they can even evaluate it. Attach a real timeline, even if it's approximate — "Week 1–2: Discovery, Week 3–4: Execution" is more convincing than a paragraph describing your process in the abstract.
The structure that actually converts
Problem (in the client's words, not yours) → Approach (specific, numbered steps) → Timeline → Pricing → Why us (one differentiator, not a list of five). Proposals that lead with "About Us" before establishing the client's problem lose the reader in the first paragraph.