The revenue report looks fine. The bank balance does not. Same morning. Two stories on two screens.
Payroll is two Fridays out. Rent does not care that last month’s visits were strong.
The question that matters is forward, not backward.
Here is the answer: revenue counts what you billed. Cash counts what arrived.
If nothing changes, will money in the door cover payroll, rent, and your draw in the next three months?
A revenue report faces the wrong way. A medical practice cash flow forecast faces the bank.
The P&L can smile while the bank does not.
The P&L (profit and loss statement) can look healthy while cash is thin.
A visit becomes a charge (the visit written as a billable line), then a claim (the bill to the insurer). The payer (insurance company) answers on its own clock.
Payment posts in billing. The patient share collects. Money hits the bank.
That distance is time. A cash forecast is that time drawn on a calendar, using what you already know about how each payer actually pays you.
Related: where claims get stuck, denials start here, appointments with no path to payment.
What will cash look like in three months if nothing changes?
Start from money already owed, not hope about next month’s visits.
- List open claims (and patient balances that matter).
- For each major payer, use your own history of how many days they usually take to pay.
- Drop expected landings into the next three months.
- Put payroll, rent, loan, and draw beside those landings.
- Mark any month where landings fall short of need.
That is the deposit forecast (when cash is expected in the bank). It is arithmetic on what already exists.
Why revenue cannot answer the question
Revenue is the promise. Cash is the arrival.
A strong revenue month can sit in front of a thin cash month, because the claims from that strong month have not been paid yet. The reverse happens too: a slow month can pay out well, because older claims are landing.
An owner who watches revenue while cash drifts the other way is watching a number that already happened, measured at the moment of billing. The money that pays the bills shows up later, and how much later depends entirely on who owes it.
Each insurance company pays on its own clock
The reason a forecast can be built at all is that insurance companies are consistent about their own speed.
One pays in two weeks. Another takes longer. A third is slow every single time. Your own records already hold how long each one has taken, claim after claim.
Apply each insurance company’s own pay-lag (the number of days it usually takes to pay) to the claims it currently owes you, and you can place those dollars on the calendar with fair confidence.
The forecast is only as good as that history, and the history is sitting in your billing system. Days-to-pay from remits (payment advices from the insurer, also called ERAs or EOBs) is the practical source.
Insurance A/R by payer (accounts receivable owed by insurers, not patients) is the pipe you are reading.
The do-nothing line
Start with the honest line: if nothing changes, this is what arrives.
Every open claim lands on the calendar at its insurance company’s usual speed. The denials (insurer refusals) that will happen at your usual rate happen. Nothing new gets fixed.
This is the line most owners never draw, because it takes seeing the whole pipe at once. It is also the most useful, because it shows the shortfall early, while there is still time to act, instead of on the Friday a payroll run comes up short.
The plan line
Now draw the second line: the same pipe, with one thing fixed.
Say you clear the posting backlog (payments that arrived and were never recorded against the visits), or you work the biggest stall in your unpaid claims. Each fix pulls money that was going to land later into sooner months instead.
The plan line shows how much sooner, and how much more, cash arrives if you act. Watching the two lines apart turns a vague worry into a decision about which fix is worth doing first.
The line you actually need
The third line has nothing to do with claims. It is what the practice needs each month: payroll, rent, the loan, your own draw.
Lay it flat across the three months.
Where the do-nothing line dips below the need line is the month to act on now, not when it arrives. Where the plan line clears the need line is proof the fix is worth the effort.
Three lines on one calendar turn “I think cash is tight” into “November is short unless we clear the backlog in October.”
What belongs in the pipe view
Include:
- Open insurance claims by payer, with your own days-to-pay
- Denials still workable inside the appeal window
- Patient balances you actually collect on a known rhythm
- Known posting lags (remits received, not yet posted)
Leave out:
- Hoped-for visit volume you have not booked
- Contract wins that are not signed
- One-time miracles with no owner
The forecast is strongest when it is boring and owned.
Why month-end reports cannot do this
A month-end report is an autopsy. It tells you what happened to cash after the month is over, when nothing can be changed about it.
A forecast faces the other way. It takes what you already know (the open claims and each insurance company’s speed) and projects it forward far enough to act.
The weekly habit of looking ahead beats the monthly habit of looking back, because only one of them leaves you time to do something.
An AR aging report (unpaid balances by age) tells you size. It does not place landings on a calendar by payer clock.
Real situations the revenue report misses
A practice posts a strong billing month, then faces a thin bank two Fridays later, because the claims from that month have not paid yet.
Another practice has remits sitting unposted. The bank already has the deposit. The forecast that ignores posting lag understates this week’s cash and overstates next week’s open A/R.
A third practice loads hoped-for volume into the forecast and then “misses” every month. The method was never wrong. The inputs were wishes.
Levers that move a short month
- Clear posting backlog so landed money becomes usable cash this week.
- Work the tallest stall on the claims path so landings move earlier.
- Prevent the same denial cause on repeat that keeps recycling the same dollars out of the pipe.
- Stop booking appointments with no path to payment that never become real landings.
Draw the plan line with one lever at a time. Compare. Staff the lever that closes the short month first.
What not to do with the first draft
Do not invent precision. Approximate payer days from your own remits are enough.
Do not hide short months. The point of the forecast is to see them early.
Do not treat the forecast as a pep talk. Treat it as a worklist with dates.
What to do this week (simple check)
- Pull open claims grouped by payer.
- Write each payer’s usual days-to-pay from your own history.
- Drop expected landings across the next three months.
- Lay payroll, rent, loan, and draw beside them (the need line).
- Draw one plan line with your biggest fix applied. See whether the short month closes.
Where this sits next to the path maps
Path maps show where money stopped. The forecast shows when that stop becomes a short month at the bank.
Use both. Map for the fix. Forecast for the deadline.
What this means for you
Build the do-nothing line this week. Pull open claims by insurance company. Apply each insurer’s real days-to-pay. Drop landings on the next three months. Lay need beside them.
The month where money coming in falls under what you need is your early warning. Then draw the plan line with your biggest fix applied, and you will see whether that one fix closes the gap.
We are not putting numbers on your months here, because they are yours. The method is the same in every practice.
Grab 30 minutes with us. Prep nothing. You will see your next three months of cash drawn from the claims you are already owed.
Questions people ask
How do I forecast cash flow for a medical practice?
Start from money already owed, not money you hope to bill. Take every open claim, apply the number of days each insurance company actually takes to pay from your own history, and place those expected payments on the next three months. Lay your monthly costs beside them. The months where incoming cash falls below what you need are the ones to act on.
Why is my revenue up but my cash flow down?
Because revenue is counted when you bill and cash arrives later, on each insurance company’s schedule. A strong billing month can sit in front of a thin cash month whose claims have not been paid yet. The two numbers measure different moments.
How far ahead can I forecast?
About as far as your pipe of unpaid claims reaches, which for most practices is roughly three months. Beyond that you are guessing at visits not yet booked. Within it you are working with money that already exists and insurance companies whose speed you already know.
What is the difference between a forecast and a month-end report?
A month-end report looks backward at cash that already moved, when nothing can be changed. A forecast looks forward, using your open claims and each insurance company’s usual pay time. One is an autopsy. The other is an early warning.
Which fix improves cash the fastest?
The one that moves the most money the soonest, which the forecast shows directly. Clearing a posting backlog turns payments you already received into recorded cash right away. Working the biggest stall in your unpaid claims pulls landings from later months into sooner ones. Draw the plan line with each fix applied and compare.