How Much Cash Do I Actually Have to Work With Right Now?

A founder opened her banking app in front of me, pointed at the balance, and said that number felt good. Then I asked what was leaving the account in the next two weeks. Payroll, a tax remittance, a supplier deposit, a software renewal she had forgotten about. By the time we finished listing it, the spendable number was a fraction of what the app showed. The balance had not lied. It had just answered a different question.

This is the question almost every founder is really asking, even when they phrase it as something else. How much can I actually move on, today, without breaking something next week. Here is how I help owners answer it for themselves.

"How much cash is in the bank right now?"

The bank balance is the easiest number to find and the most misleading one to act on. It tells you what landed, not what is already spoken for.

The number that matters is committed cash: your balance minus everything you have already promised to pay in the near term. Payroll. Remittances. Supplier deposits. The card bill that posts next week. The subscriptions that renew on autopilot. Once you subtract all of that, what remains is what you can actually deploy.

I build owners a simple rolling cash view so they can see this on any given day. A beverage brand I worked with thought it had a comfortable cushion to put toward a new product line. The committed-cash number was about a quarter of the bank balance. That gap is where most cash mistakes start: an owner spends against the balance, then scrambles when the committed payments clear.

"What does the next 30 days actually look like?"

Start short before you go long. The next 30 days is the window you can see clearly, and it is the window where cash crunches actually happen.

List every expected inflow and outflow over the coming month and place each one on the date it lands. Customer payments on the days you genuinely expect them, not the day the invoice says net 30. Payroll on its real dates. Rent, remittances, loan payments, the big supplier run. When you lay it out by date instead of by month, you stop thinking in averages and start seeing the dips.

A marketing agency I worked with looked profitable on a monthly view and still felt squeezed every few weeks. The monthly average was healthy. The timing was brutal: most costs cleared early in the month and most client payments arrived late. The fix was not more revenue. It was nudging a few payment dates and holding a small buffer through the tight stretch.

"How do I build a rolling 13-week view without it taking over my life?"

Once the next month is clear, extend the same idea out to thirteen weeks. Thirteen weeks is roughly a quarter, which is long enough to catch a slow season or a big tax payment, and short enough that you can still forecast the dates with some confidence.

Keep it simple. One column per week. A starting cash balance at the top. Expected inflows by week. Expected outflows by week. The closing balance carries into the next week as the new opening balance. That last running line is the whole point: it shows you the lowest cash moment in the quarter before you arrive at it.

The word rolling is the part people skip. Every week you drop the week that just finished and add a fresh week on the far end, so you always have thirteen weeks ahead of you. The model stays alive instead of going stale the moment you build it. The first version will be rough. By the third week of updating it against what actually happened, your estimates tighten and the view becomes something you trust.

"How many weeks or months should the projection cover?"

Match the horizon to the decision in front of you. The next 30 days answers can I make payroll and cover what is committed. The 13-week view answers can I get through this quarter and the seasonal swing inside it. A monthly view stretching six to twelve months answers the bigger questions about hiring, growth, and runway.

For day-to-day operating decisions, thirteen weeks is the workhorse. It is close enough to forecast honestly and far enough to give you time to react. Push much past a quarter on a weekly basis and the dates turn into guesses, which adds noise instead of clarity. Save the longer horizon for the monthly plan, and let the rolling weekly view do the near-term steering.

"Why does runway drop from one level to a much lower one in a single month?"

Runway is current cash divided by monthly burn, and the version founders carry in their head is almost always too generous. The drop that feels like it came out of nowhere usually has a clear cause.

Burn jumps the month you add a hire, because salary, tools, and onboarding all land at once. Collections slow during a quiet stretch, so cash in falls while cash out holds steady. A large annual payment, an insurance renewal or a tax bill, hits in a single month and distorts the burn figure. When I show a founder their runway falling sharply in one month, the number is rarely new. The visibility is.

That is why runway is best read as a leading indicator, not a rear-view mirror. Track it every month against your rolling cash view, and a sharp drop becomes a signal you saw coming rather than a surprise that arrives with the bank alert. The owners who watch it monthly get to make calm choices. The ones who check it only when they feel nervous are usually already inside the problem.

"How can outstanding invoices be managed to improve cash flow?"

Money you have earned but not collected is still cash. It is just sitting in someone else's account. Pulling it in faster is often the cheapest way to extend runway, because it requires no new sales and no new cost.

A few habits do most of the work. Invoice the moment the work is done, not at the end of the month. Make the terms explicit and short, and confirm the client knows them up front. Send a friendly reminder a few days before the due date, not a week after. Watch your aging closely, so a payment that slips from net 30 to net 50 gets a nudge instead of a shrug. For larger projects, structure a deposit or milestone payments so cash arrives alongside the work rather than long after it.

A software startup I worked with freed up a meaningful chunk of cash without closing a single new deal, simply by tightening when invoices went out and following up on the ones that aged. The revenue was already earned. They were just letting it arrive late.

"Should the cash view update on a fixed schedule?"

Yes, and the schedule matters more than the exact day. Cash visibility is a rhythm, not a one-time build. A view you update on a set cadence becomes a habit you can rely on. A view you update only when you get anxious tells you about a problem after it has already formed.

For most founders, a weekly update on a fixed day works well: refresh the rolling 13-week view, roll off the week that closed, add a new week at the end, and reconcile last week's estimates against what actually happened. If your business moves slower, a biweekly cadence on set dates is fine. The point is consistency. Same view, same day, every cycle. That regular look is what turns the cash view from a spreadsheet into a steering wheel.

The real lesson

The bank balance answers a comforting question. Committed cash, the next 30 days, and a rolling 13-week view answer the real one. None of this requires a finance degree. It requires one honest number, a regular look at it, and the discipline to read runway as the early warning it is meant to be.

If you can say, on any given day, exactly how much cash you have to work with and how many months that buys you, you are already operating like a CFO. The rest is just keeping the rhythm.

Peter Xia is a CPA and fractional CFO. He shares finance breakdowns for founders on @CanadianCFO.

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