Profit vs. Cash: Why a Profitable Business Can Still Run Out of Money

It's one of the most common surprises for a new business owner: the P&L says you made $100,000 in profit this month, but your bank balance barely moved. Neither number is wrong — they're just answering different questions.

Profit is an accounting measure. It's revenue earned minus expenses incurred, regardless of whether cash has actually changed hands. Cash flow is simpler and more literal: money that has physically moved in or out of your bank account.

Say you invoiced a client $60,000 this month for work completed. That $60,000 counts as revenue — and profit — the moment you earn it, under accrual accounting. But if the client hasn't paid yet, none of that $60,000 exists in your bank account. It's sitting in accounts receivable instead.

The same gap shows up in reverse with inventory, loan repayments and capital purchases. Buying $20,000 of inventory doesn't hit your P&L as an expense until it's sold — but it leaves your bank account immediately. A loan repayment reduces your cash but doesn't touch your P&L at all, because only the interest portion is an expense.

This is why a growing, profitable business can still run into a cash crunch: revenue is earned faster than it's collected, and cash is spent faster than it's expensed. Profit tells you whether the business model works. Cash flow tells you whether you can make payroll next week. You need to track both.