Two Rivers Dental, a $1,500-a-month margin, and the decision date behind the zero date

The moment

Two Rivers Dental has two offices in Springfield, Missouri. The second opened fourteen months ago and is still carrying its own fit-out loan. In an ordinary month the practice collects about $268,000 and everything going out — payroll, supplies, both leases, the loan — runs about $266,500. $38,000 sits in the operating account.

October is not an ordinary month. A change at one of the two big insurance payers has claims sitting in review instead of paying out on the usual cycle, and collections for the month come in at $220,000 against the same $266,500 going out. The practice manager watches the balance and cannot tell whether this is a bad month or the start of something worse.

That is the actual question a bank balance never answers: not "is this bad" but "how long have we actually got, and by when does that answer change."

What they did instead

For thirteen months the practice manager watched the balance day to day. Rising, it was fine. Falling, it was a bad week. Nobody had ever divided the cash by the monthly burn, because most months there was no burn to divide.

That habit works right up until the month it doesn't, and it doesn't tell you anything about time. A bank balance is a snapshot. It says nothing about whether next month makes it better or worse, and it says nothing at all about how long a fix takes to land once you decide to pull it.

The cost of that is not October. It is that nobody had a number for how long a loan conversation or a rate renegotiation with the payer actually takes, so if October had continued into November, the first real decision would have been made with no time left to make it well.

The questions a CFO asks first

1. What can you actually get your hands on today — cash on hand, not assets?
2. What do you actually collect in a month, not what you invoice?
3. What leaves, all in, including your own draw?
4. If money got short, which lever would you actually pull — a loan, a cut, a sale — and how long does that lever take from a first conversation to money in the account?
5. How much of what leaves every month is payroll?

Question 4 is the one nobody answers until they need it, and by then the answer is worse than it would have been three months earlier.

The arithmetic, shown

Scenario one — an ordinary month.

The practice is not burning cash in an ordinary month. But 0.6% is not a margin, it is a rounding error with a bank account attached — a single slow payer or one lost patient block is larger than that, which is exactly what October is.

Scenario two — the slow month.

Collections fall to $220,000. Going out stays $266,500.

0.8 months of cash against 5 months of lead time is not a warning about the future. It states that the lever the practice would actually pull is no longer available on a normal timetable, this month, using the numbers from this month alone. And payroll is 62% of what leaves — at that concentration, "cut costs" and "reduce staff" are the same conversation, not two options.

What each lever on the table would actually buy, from here:

Scenario three — no lever named.

Same slow month, same $46,500 of burn — but nothing planned. The finding reads: "You have 0.8 months before the decision, not 0.8" — the same number twice, because with nothing named there is no lead time to subtract. Alongside it sits a second finding, titled plainly "No lever named": with nothing named, the zero date and the decision date collapse into one, and the practice finds out on the day the account actually runs dry rather than months before it.

What changed

The practice named the lever before it needed one: a line of credit against receivables, arranged with the bank the month after the slow one, while there was still time to negotiate normal terms rather than emergency ones.

Nothing about October changed after the fact — the insurance payer's claims still took as long as they took. What changed is that the next slow month gets measured in months of lead time against months of cash, not in whether the balance looks worse than last time.

What the tool will not do

It will not call scenario one "unlimited runway" because the practice is not burning cash today. It reports the buffer instead — how far collections can fall before burn resumes — because that is the number that is actually fragile, and October is the proof.

It will not treat a percentage cost cut as painless. At 62% payroll, cutting 15% of spend is a decision about people, and the tool says so rather than showing a clean months-gained figure as if it were free.

Its lead times — five months for a raise, two for a cut, six for a sale — are planning conventions, not measured facts about this practice or this bank. If you know your own number, because you have done this before or your notice periods are fixed by contract, use it instead.

It does not model compounding growth in collections as the plan. Where a growth rate is entered it is shown as the optimistic case, and the flat number is the one to build a decision around, because the month growth stops arriving is usually the same month everything else goes wrong too.

It does not replace an actual conversation with a bank or a lender. It tells you when that conversation needs to start, not what it will conclude.