Steer your cash flow so you're never overdrawn

Accounting profit and cash flow are two different things

Here's one of the most dangerous confusions in entrepreneurship: believing that being profitable means having money. These are two distinct notions. Accounting profit measures whether, over a period, your income exceeds your expenses. Cash flow measures what's actually in the account, right now.

A business can be profitable and yet unable to pay its bills: if its customers pay in 60 days while it pays suppliers and salaries in 30, money goes out before it comes in. That's the famous "cash gap," and it's what kills growing businesses — the ones that sell a lot but finance their growth from their own pockets.

Cash flow is therefore the real vital sign. You can survive a while without profit; you can't survive a day without cash to pay what's due.

The forecast: see the wall before you hit it

Tracking your current balance isn't enough: you have to anticipate. A cash-flow forecast lists, week by week or month by month, the expected inflows (invoices to collect) and the planned outflows (charges, salaries, VAT, deadlines). The projected balance shows you, in advance, the moment you risk slipping into the red.

This simple exercise changes everything. It turns an end-of-month panic into a decision made three months earlier: chase a client, postpone a purchase, negotiate a supplier delay, or raise short-term financing. You no longer endure — you steer.

Start simple: the spreadsheet

At the start, don't buy a cash-flow tool. A spreadsheet (Google Sheets, Excel) is plenty and forces you to understand your own mechanics. The minimal structure:

A starting balance line.
An inflows block: invoices to collect, with their expected payment date.
An outflows block: rent, subscriptions, salaries, contributions, VAT, repayments.
A projected balance line at the end of each period, carried from one column to the next.

Update it once a week, the same day. Fifteen weekly minutes give you a permanent head start. An AI like ChatGPT or Claude can generate the spreadsheet structure and formulas for you if you describe your activity.

Move to a dedicated tool when volume demands it

When flows multiply (several accounts, dozens of invoices, complex deadlines), the spreadsheet shows its limits. That's the moment for cash-flow management tools:

Agicap is the French reference for cash-flow steering for small and medium businesses. It automatically aggregates your bank accounts, builds the forecast, and offers scenarios. Quote-based pricing, more for structures that already have volume and several accounts.
Pennylane includes a cash-flow module that draws on the invoices and entries already there — handy if you already use it for accounting.
RocketChart, Fygr, or Trezy are lighter, more affordable alternatives, built for small structures.

The principle stays the same as the spreadsheet: aggregate balances, project flows, see the dips coming. The tool only automates and makes reliable what the spreadsheet did by hand.

The ratios to watch

Beyond the balance, two indicators deserve permanent attention:

Runway (financial autonomy): how many months can you last at the current spend rate if nothing more comes in? It's your available cash divided by your monthly "burn." Below three months is an alert zone.
Working capital need (WCN): the money tied up by the gap between what your customers owe you, any inventory, and what you owe suppliers. A WCN that swells with growth is a classic signal of tension ahead.

You don't need to calculate them daily, but to always know roughly where they stand.

In practice

This week: build a three-month cash-flow forecast in a spreadsheet, with dated inflows, planned outflows, and a projected balance. Set a weekly fifteen-minute appointment to update it. Calculate your runway once. You've just installed the radar that will keep you, when the time comes, from discovering too late that the account is empty.