Founders rarely lie about their numbers outright. What happens more often is quieter: the top-line story stays upbeat while the cash underneath it stops matching. Revenue is "up." The update reads well. And the operating cash flow, if anyone bothered to check it against reported profit, would tell a different story two or three months before anyone says so out loud.
This is what accountants call earnings quality, and professional funds have a specific check for it: the accrual ratio. Almost no angel investor or micro-VC runs it, not because it's complicated, but because it requires three numbers reported consistently, period over period, which is exactly the thing that breaks down in an inbox full of PDFs and one-line WhatsApp updates.
The gap between reported profit and actual cash
Net profit is an opinion. Cash is a fact. Most of the time they move together, and the gap between them doesn't mean much. But when a company is under pressure, that gap is often the first place it shows.
The accrual ratio makes this precise: it's the difference between net profit and operating cash flow, scaled by total assets.
- Net profit - what the company reports as earnings, after judgment calls about what counts as revenue and when.
- Operating cash flow - what actually moved through the bank account from running the business.
- Total assets - the scale the gap is measured against, so a $5,000 mismatch reads differently for a pre-seed company than a Series B one.
A widening gap between profit and cash, as a share of the balance sheet, is one of the most studied early-warning signals in accounting research - the same logic underpins how forensic accountants screen public companies for earnings manipulation. It rarely appears for one bad reason. It's usually several small ones: revenue booked before it's collected, costs deferred instead of recognised, a receivable that's aging past when it should have converted to cash.
Where the thresholds actually sit
As a working guide: an accrual ratio under 0.10 is unremarkable. Between 0.10 and 0.25 is worth a second look. Above 0.25 is a genuine warning - the kind of gap that, in isolation, should change how closely you're watching that company.
What matters more than any single reading is the trend. A company sitting at 0.08 for three consecutive updates is fine. A company that moves from 0.04 to 0.14 to 0.22 across three updates is telling you something, even if every individual number still looks "okay" on its own. Catching that trajectory requires the same three inputs, reported the same way, every period - which is the part that quietly falls apart once you're tracking more than a couple of companies by hand.
Why this almost never gets checked
It's not that fund managers don't care about earnings quality. It's that checking it requires a founder to report net profit, operating cash flow, and total assets as three distinct, consistent numbers - and most investor updates don't ask for that. They ask for "how's it going," and get a narrative back.
Even when the numbers are technically available, they're buried across different documents in different formats: a P&L in one email, a cash flow statement three months later, a balance sheet only at the last fundraise. By the time you'd need all three from the same period to actually run the ratio, the moment to catch the trend has usually passed.
What to do: treat net profit, operating cash flow, and total assets as three fields you ask for every period, not three documents you go looking for once a year. The calculation is trivial once you have them. Getting them, consistently, from every company in your portfolio, is the actual problem.
Concentration makes the same signal matter more or less
A rising accrual ratio in a small position is a note to watch. The same signal in the company that's become your largest holding - measured by current value, not the size of your original check - is a different conversation entirely.
This is where accrual risk and concentration risk compound. Professional funds track both together for exactly this reason: the position most capable of hurting the fund is usually the one that grew the most, which means it's also the one where an early warning sign is most worth acting on quickly.
What this actually protects against
None of this is about distrust. Most founders showing a widening accrual gap aren't hiding anything - they're often the last to notice it themselves, buried in the day-to-day of running the company. The value of catching it early isn't confrontation. It's the conversation happening at month four instead of month nine, while there's still time to do something with the information.
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This is what Risk Signals in Quantro does automatically: every structured update a founder sends is scanned for the accrual ratio, checked against the prior period, and flagged before it becomes a surprise, alongside an HHI concentration grade so you can see which companies matter most when a signal fires. No spreadsheets, no chasing three separate documents to run the numbers by hand.
If you're also thinking about concentration more broadly, we wrote about tracking TVPI, DPI, and portfolio risk as a whole - useful context for how these signals fit into a full portfolio review.
Frequently asked questions
What is the accrual ratio and why does it matter for startup investors?
The accrual ratio measures the gap between a company's reported net profit and its actual operating cash flow, as a share of total assets. A large, growing gap means the business is booking revenue or profit that hasn't turned into cash yet, which is one of the earliest, most reliable signals of financial trouble - well before it shows up in a headline number like burn rate.
What's a dangerous accrual ratio threshold?
As a rough guide, a ratio above 0.10 is worth a closer look, and above 0.25 is a real warning sign. These aren't hard rules for every business, but a rising ratio over consecutive updates is the pattern that matters most, not any single reading in isolation.
Can angel investors calculate accrual ratio without financial training?
Yes, if the three inputs - net profit, operating cash flow, and total assets - are reported in a structured, consistent format each period. The calculation itself is simple; the hard part has always been getting founders to report those three numbers the same way, every time, so there's something to compare.
How do micro-VCs monitor portfolio risk across many companies at once?
The same way professional funds do: a standard set of numbers, reported on the same cadence, checked automatically against the prior period. Doing this by hand across 10-20 companies is a part-time job; doing it with a tool that scans every new update as it arrives is not.
Is portfolio concentration risk related to accrual risk?
They compound each other. A rising accrual ratio in a company that's 5% of your portfolio is worth watching. The same signal in your largest position - by current value, not original check size - is worth acting on immediately. Tracking both together is what turns a red flag into a decision.
