Gross burn: $280,000. Net burn: $100,000. Runway: 35 months.
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Managing Your Startup's Burn Rate
The 18-Month Rule
Most VCs recommend maintaining at least 18 months of runway at all times. Fundraising takes 3-6 months, so starting the process at 12 months of runway means closing with only 6-9 months left — a dangerously weak negotiating position. If your runway drops below 12 months, treat it as an emergency: cut non-essential spending and accelerate revenue efforts.
Burn Rate Red Flags
Watch for these warning signs: burn increasing faster than revenue, burn exceeding plan by more than 15%, runway below 12 months without a clear path to profitability or fundraising, and net burn remaining flat while gross burn increases (meaning revenue is growing but so are costs at the same rate).
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Frequently Asked Questions
What burn rate is normal for a startup?
Burn rate is not absolute — it should be evaluated relative to your funding, stage, and revenue trajectory. Pre-seed ($500k–$2M raised): $30–80k/month gross burn is typical. Seed ($1–3M raised): $60–150k/month. Series A ($5–15M raised): $150–400k/month. Series B ($15–50M raised): $400k–$1.5M/month. Net burn benchmarks: Series A companies should target net burn below $200k/month or burn multiple under 1.5x.
What is the difference between gross and net burn?
Gross burn is your total monthly cash outflow — all expenses paid regardless of revenue. Net burn is gross burn minus cash revenue received — the actual monthly reduction in your bank balance. For pre-revenue companies, gross and net burn are identical. Investors always ask for both because they reveal different information: gross burn shows cost structure, net burn shows cash depletion rate.
What is burn multiple and how is it calculated?
Burn multiple = net burn ÷ net new ARR. If you burned $150k net and added $50k of new ARR in a month, burn multiple = 3.0x. David Sacks of Craft Ventures established the benchmarks: under 1x is exceptional, 1–1.5x is good, 1.5–2x is acceptable early-stage, above 2x is concerning, above 3x is problematic. Burn multiple should decrease as you scale if your go-to-market is improving.
How do you reduce burn rate?
Prioritized by impact and reversibility — Immediate, low regret: cancel unused SaaS subscriptions, renegotiate vendor contracts, optimize cloud spend (often 20–40% savings), pause paid channels with payback over 12 months. Medium-term: slow hiring, convert contractors to part-time, reduce office space. High regret (avoid if possible): lay off customer success (increases churn), cut engineering below maintenance level (creates tech debt), eliminate marketing during a growth phase.