Know your runway without a $10k/month CFO
Six months ago I had no idea how much runway I had left.
Not roughly. Not "somewhere between 8 and 12 months." I genuinely didn't know. Revenue was coming in, expenses were going out, and I was too deep in product to sit down with a spreadsheet and figure it out properly.
I told myself I'd do it next week. Every week.
The thing about not knowing your runway is that it doesn't feel urgent until it suddenly is.
When I finally ran the numbers, I had 4.5 months left. Not the 8+ I'd been assuming. I'd been making hiring decisions, signing annual contracts, and spinning up paid acquisition - all based on vibes.
The "obvious" solution people kept suggesting was a fractional CFO. Starts at $5k/month. The decent ones want $10k+. That's more than my MRR at the time.
So I started poking around for what founders actually do instead.
Here's what I found works for the pre-revenue or early-revenue stage:
-
Separate your known burn from your variable burn: Fixed costs (salaries, subscriptions, rent) are easy. The chaos is in the variable stuff - contractors, ads, tools you forgot you signed up for. List them separately.
-
Build one number you check weekly: Not a full P&L. Just the cash in bank ÷ monthly burn = months left. Put it in a Notion widget or a phone shortcut. Make it impossible to avoid.
-
Model two scenarios, not one: "If nothing changes" and "if we sign the deal we're chasing." Most founders only model the optimistic case.
-
Set a trigger, not a goal. "If runway drops below 6 months, I start fundraising / cut X / do Y." Having the rule in advance means you don't freeze when it happens.
None of this is revolutionary. But actually doing it consistently is what most of us avoid.
I'm building a tool around this problem — basically the financial visibility layer that sits between "I have a bookkeeper" and "I can afford a fractional CFO." Early days and would love feedback from anyone who's felt this pain.
What did you do to get your head around finances in the early days? Spreadsheet? Tool? Just vibes and prayer?
#finance, #runway, #bootstrapped, #early-stage, #lessons-learned
Hey Nadia — your post about not knowing your runway hit close to home for a lot of founders I know. That line — "it doesn't feel urgent until it suddenly is" — is exactly the thing nobody warns you about.
You mentioned you're building something in the gap between bookkeeper and fractional CFO. I'm working on something in that same space that might be worth a quick compare-notes conversation. Zirano Finance is an AI-powered CFO tool built specifically for early-stage founders who don't have finance people — it gives you a real-time financial picture and explains in plain English what it means and what to do.
Not pitching you on it — more curious whether the approach we've taken overlaps with what you're hearing. Would love to trade notes if you're open to it.
I know a couple of early-stage founders who have definitely felt this pain and might be willing to answer your questions for free. Happy to pass them along if you'd like.
This is exactly the gap between bookkeeping and CFO support. Bookkeeping tells you what happened, but founders need a weekly view of what cash decisions are coming.
I especially like your point about setting a trigger, not just a goal. A simple weekly cash view with cash balance, expected collections, payroll/vendor commitments, and two scenarios is usually enough to avoid “runway by vibes.”
Curious whether you’re building this more as a lightweight dashboard or as guided weekly decision support?