“We need to do more marketing” is not a plan. Neither is “let’s run some ads.” A plan starts with a number — the revenue this quarter has to produce — and works backward until every marketing play has a quota it either hits or doesn’t. That backward walk is pipeline math, and it’s the single highest-leverage hour a founder can spend on marketing.
It’s also the hour most teams skip. Which is why the same companies that can quote their burn rate to the dollar will run a channel for six months without knowing how many leads it would need to matter.
The method, in five steps
1. Start at revenue. New revenue needed this quarter, divided by your average deal size, equals deals needed. 2. Divide by your win rate to get opportunities needed. 3. Divide again by your conversation-to-opportunity rate to get qualified conversations (or, product-led: signups→activation→paid). 4. Divide by your traffic-to-lead rates to see what inbound alone would require. 5. Compare that to reality — and let the gap choose your plays.
Every division needs a rate, and until you have your own data, you borrow honestly. These are defensible 2026 starting priors for sales-led B2B:
Visitor → lead: ~1.4–1.7%
TheDigitalBloom’s 2025 B2B SaaS funnel benchmarks put SMB/mid-market at 1.4%; First Page Sage’s 2025 data puts B2B SaaS at 1.7%. SEO and LinkedIn traffic convert about 3x better than paid clicks.
Lead → MQL: ~40% · MQL → SQL: ~15–21%
Source matters enormously here — website-sourced and referral leads qualify at roughly double the rate of paid ones.
SQL/conversation → opportunity: ~42%
TheDigitalBloom 2025, SMB/mid-market. Ranges of 30–59% show up across compilations depending on how strictly “qualified” is defined.
Opportunity → won: 20–30%
The sober anchor: across 655,000 opportunities in Ebsta × Pavilion’s 2025 GTM Benchmarks, the average new-business win rate was 19%. Top performers clear 30%. Plan at 25% only if you can say why.
Sales cycle: ~30–90 days under $25K ACV
Norwest’s 2025 benchmark survey puts sub-$25K deals at 2–3 months; TheDigitalBloom’s median across B2B SaaS is 84 days. Deals you start this month close next quarter — the math has a lag built in.
Two of those numbers multiply into the most useful planning constant in B2B: one closed deal ≈ 8–10 real conversations (42% conversation-to-opportunity × 20–30% win rate). It’s derived, not gospel — but it sizes founder-led sales and outbound better than any dashboard.
The honest-math moment
Here’s the sales-led walk for a startup that wants $500K of new ARR this year at a $15K deal size. That’s 33 deals. At a 25% win rate: ~130 opportunities. At 42%: ~315 qualified conversations — about 26 a month. Try to source all of that from inbound at benchmark rates and you need roughly 1,700 MQLs, ~4,300 leads, and on the order of 280,000 visitors. Almost no seed-stage company has that traffic — which is the math telling you something, not failing you. It’s why sales-led seed plans lean on conversations you make directly — founder-led outbound to named accounts, warm intros made systematic — while the compounding channels build.
The product-led walk is just as clarifying. $10K MRR at $49/month is roughly 204 customers. At a ~5% free-to-paid rate (OpenView’s freemium benchmark; ProductLed’s 2025 survey median across models is ~9%), that’s about 4,100 signups. At a 3–4% visitor-to-signup rate: 100,000–135,000 visitors. One number changes everything: move free-to-paid from 5% toward the ~25% ProductLed reports when someone actually reaches out to qualified signups, and the traffic requirement falls by four-fifths. That’s pipeline math choosing a play for you: at seed, the founder emailing 20 product-qualified signups a week beats another 20,000 visitors you don’t have.
Coverage: how much pipeline is enough
Boards ask for pipeline coverage — open pipeline divided by quota — and the folklore answer is 3x–4x. The honest answer depends on your win rate. Clari’s 2026 guidance: required coverage ≈ 1 ÷ win rate. Win a quarter of your deals, you need 4x. Win 15%, you need closer to 7x. Salesforce has made the same argument for years — the flat 3x rule silently assumes a 33% win rate and a one-year cycle. Know your rate, and the coverage number stops being folklore.
From math to plays
The math earns its keep when it picks your channels. The gap between conversations-needed and traffic-you-have is a channel decision. The gap between deal size and acquisition cost is a channel decision. A $49/month product has no room for cold paid acquisition; a $15K deal can afford a founder’s hour per account. Write the math first, and the play list mostly writes itself — that’s the structure of the 90-day plan, and the leaks the math exposes are exactly what a marketing audit is for.
One discipline makes all of it compound: every number above is an assumption to beat. Write the priors down, tag every deal with its source from day one, and replace the internet’s numbers with yours as they land. Kindling’s free audit runs this exact math against your goal and your traffic in about ten minutes — sources shown, assumptions labeled — and the 90-day plan it feeds keeps the math honest week by week.