Cash Flow vs Profit: Know the Difference

“The P&L says we made $40,000 last quarter. So why can’t I make payroll on Friday?”

We hear a version of this from almost every new client, and it isn’t a bookkeeping error. Profit and cash are genuinely different things, measured on different clocks — and the gap between them is where businesses get hurt.

Profit is an opinion about a period. Cash is a fact about today.

Your Profit & Loss counts revenue when it’s earned and expenses when they’re incurred — not when money actually moves. Send a $20,000 invoice in June and it’s June revenue, even if the customer pays in September. That’s not a flaw; it’s accrual accounting doing its job of matching effort to results.

But your landlord, your staff, and the CRA get paid out of the bank account, not the P&L. Cash flow is the timing story the P&L deliberately ignores.

Where the money hides

Several big cash movements never touch profit at all, and they’re the usual suspects when profit looks fine but the account is empty:

• Accounts receivable. Every unpaid invoice is profit you’ve booked but can’t spend. Growing sales with slow collections means growing profit and shrinking cash at the same time.
• Loan principal. Only the interest on a loan payment hits the P&L. The principal comes straight out of cash, invisibly to profit.
• Equipment and vehicles. A $60,000 truck leaves your bank account once, but hits the P&L slowly over years as depreciation.
• Owner draws. Money you take out of the company (outside payroll) reduces cash but never shows as an expense.
• Sales tax. The HST you collect was never yours — it sits in your account looking like cash until the quarterly remittance takes it back. Businesses that “spend the HST” learn this the hard way.
• Inventory and deposits. Cash out now, expense later — sometimes much later.

The fix: a 13-week cash flow forecast

You don’t need to predict the year. You need to see the next quarter, week by week: expected money in (based on when customers actually pay, not invoice dates), expected money out (payroll, rent, suppliers, loan payments, tax remittances), running balance at the end of each week.

Thirteen weeks is the sweet spot — long enough to see a crunch coming while you still have options (chase receivables, delay a purchase, arrange financing calmly instead of desperately), short enough to keep honest.

The habit matters more than the tool: update it weekly, compare last week’s forecast to what actually happened, and it gets sharper every month.

Watch both numbers

Profit tells you whether the business model works. Cash tells you whether you’ll be here next month to enjoy it. You need both, which is why our monthly packages include real financial reports — and why we nag clients about receivables.

Try the free calculators for quick answers, grab the 13-week Cash Flow Forecast template to build the habit, or book a free call if you’d rather have someone watching both numbers for you every month.