How Much Do You Need to Raise?
Enter your monthly costs, current revenue, and expected growth rate. The calculator outputs your estimated raise, monthly burn, time to break-even, and total runway needed.
Monthly costs
- $
- $
- $
- $
- $
Revenue & growth
Your results
Estimated raise needed
$524K
covers burn to break-even + 3-month buffer
Current monthly burn
$32K
Time to break-even
21 months
Total burn before B/E
$415K
Total runway needed
23 months
Monthly burn trending to zero
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Start Free TrialCase study - a real scenario
How a B2B SaaS founder used this framework to size their seed round.
The situation
A two-founder SaaS company selling compliance software to mid-market HR teams. They had 3 paying customers at $1,500 MRR each, closing a 4th. Monthly costs were $36,500 - mostly two senior engineering salaries and a part-time sales hire.
The inputs
- Staff & salaries$28,000
- Rent & office$2,500
- Marketing$4,000
- Software & tools$2,000
- Current MRR$4,500
- Monthly growth rate12%
The output
Raise needed
$415K
Break-even at
Month 19
Total runway
22 months
They raised $500K at a $3.2M pre-money valuation - slightly above the calculator figure to give room for a second sales hire. They hit break-even at month 17, two months ahead of plan.
What the founder learned
Raise to a milestone, not a time period
The $415K figure was anchored to break-even, not "18 months of runway." Investors respond better to milestone-based asks because it shows capital discipline and a clear outcome.
Growth rate is the most sensitive input
Dropping assumed monthly growth from 12% to 8% pushed break-even from month 19 to month 27 and raised the required capital by $180K. Conservative assumptions protect you in diligence.
Target investors at your check size
A $500K seed round means targeting angels and micro-VCs writing $50K - $250K checks, not Series A funds. Getting stage fit right cut their outreach list from 180 contacts to 40 - and close rate went up.
Next step: shortlist investors
Segment the dataset by investment stage, investment interest, and location, then access verified contacts and exports on subscription.