Profit on paper, cash in the bank: seven habits for managing cash flow

Your sales may have been good this month and your profit report may show a healthy number, yet on payroll or rent day the bank account is nearly empty. The cause is usually simple: a customer hasn't paid yet, the stockroom is full of unsold goods, or a large bill landed out of nowhere. The Illinois Small Business Development Centers' cash management guide puts it plainly: without proper cash flow, even a thriving business can fail.

The good news is that managing cash doesn't need expensive software or an accounting degree, just a few steady habits. These seven work the same for a guesthouse, a shop, a restaurant or a service firm.

1. Keep profit and cash apart in your head

Profit is revenue minus costs; cash is the money you can actually use today. The U.S. Small Business Administration explains that the cash method records a sale only when payment arrives and shows cash flow clearly, while the accrual method records the sale immediately, even if the money comes weeks later. Whatever method you use, look at "money in and money out" separately from your profit report.

2. Build a rolling 13-week forecast

Xero's cash flow forecasting guide notes that many small businesses keep a rolling 13-week forecast as their main cash management tool: far enough ahead to catch problems early, short enough to keep up to date. "Rolling" means that each time a week ends, you add a new week at the end so you always see 13 weeks ahead. A simple spreadsheet is enough: today's bank balance, expected receipts in the week they will really arrive, and payments (payroll, rent, taxes, loan installments) on their real dates.

3. Set a cash floor and build a reserve

Choose a minimum balance that no week in your forecast should drop below. Any week under that line is an early warning you still have time to act on. The FDIC's Money Smart for Small Business course suggests setting aside a percentage of profits each month, cutting unnecessary expenses and planning ahead for seasonal swings. For tourism businesses with a peak and a quiet season, this reserve is what makes the slow months bearable.

4. Invoice early and make paying easy

Every day an invoice waits is a day the money waits too. The Illinois guide offers practical moves: require deposits; split large jobs, for example a third up front, a third mid-way and a third at completion; send the invoice the day the job is done, with a clear due date; and offer a discount for early payment. Give customers a choice of payment options so paying you is easy. For lodging and tours, the booking deposit does the same job.

5. Follow up on overdue receivables, steadily

Receivables are money customers owe you, and until it's collected your cash is tied up in it. The Illinois guide suggests a simple order: sort late invoices by date and work on the larger balances first; send a written reminder, then call if there's no response; and if a customer can't pay in full, offer a schedule of smaller payments with deadlines. Bank of America's guide also names slow or overdue customer payments as a common cause of cash flow problems.

6. Time your payments wisely

Paying on time protects your standing with suppliers; the Illinois guide warns that late payments can lead to slower deliveries and stricter terms. But "on time" isn't the same as "earlier than needed." Read each invoice's terms so you know your deadline, ask suppliers for extended payment terms, ask whether they offer early-payment discounts, and if cash is genuinely tight one week, tell them before the due date.

7. Review inventory and recurring costs every month

Bank of America lists too much unsold inventory, large one-time expenses, seasonal swings and unplanned tax bills among the common causes of cash shortfalls. Stock sitting on a shelf is money you can't spend, so keep orders close to real sales. Once a month, also scan your subscriptions, contracts and fixed costs, and drop the ones you no longer need.

A habit for this week

Book a fixed weekly slot with yourself, say Saturday morning, for three things: compare your bank balance with the forecast, replace the finished week with actual figures and add a new week at the end, and go through the list of overdue invoices. The SBA also recommends getting help from an accountant or bookkeeper if needed, so someone owns receivables, payables, available cash, bank reconciliation and payroll.

Sources

• Manage your finances, U.S. Small Business Administration
• Managing Cash: The Small Business Owner's Guide to Financial Control, Illinois Small Business Development Centers, April 2025
• Money Smart for Small Business, Module 10: Managing Cash Flows, FDIC
• Cash flow management basics for small businesses, Bank of America
• Cash flow forecasting: a guide for small businesses, Xero

Cash is like oxygen for a business: you only notice it when it runs short. Have a productive week.