$ · Running the business

Cash flow and the numbers that keep you alive

Profitable businesses go under every year because they run out of cash. Knowing your numbers isn't paperwork. It's how you see trouble coming months before it arrives. The good news: you don't need to be an accountant to read the warning signs.

4 min readTools: Runway check

Profit and cash are different things

Most businesses record income when the work is billed, not when the money arrives. That's called accrual accounting, and it gives a truer picture of how the business performs. But it means your income statement can show a strong profit while your bank account is nearly empty, because clients haven't paid yet and your bills came due anyway.

This is why owners need to watch both: profit tells you whether the business model works, and cash tells you whether you'll survive long enough for it to matter.

■ The three reports

What each financial statement tells you

You don't need to be an accountant to read your own reports. You need to know which question each one answers.

Income statement

Did we make money?

Also called the profit and loss (P&L). Revenue minus expenses over a period, like a month. Compare each month with the last one and with the same month last year.

Balance sheet

What do we own and owe?

A snapshot on one day: cash, money owed to you, equipment, what you owe others, and what's left for the owner. It shows whether the business is getting stronger or weaker over time.

Cash flow statement

Where did the cash go?

How cash came in and went out: from running the business, from buying equipment, and from loans or owner money. It explains why profit and the bank balance don't match.

■ Watch these

Five numbers every owner should know

NumberHow to work it outWhat it tells you
RunwayCash on hand ÷ monthly expensesHow many months you could survive with no new money coming in.
Gross margin(Revenue − direct costs of the work) ÷ revenueHow much of each dollar is left after doing the work, before overhead.
Net marginNet profit ÷ revenueHow much of each dollar you actually keep.
Days to get paid(Money owed to you ÷ monthly revenue) × 30Roughly how long clients take to pay you. Accountants call this days sales outstanding.
Current ratioCurrent assets ÷ current liabilitiesWhether you can cover the bills due within a year. Below 1 is a warning sign.
Tool · health check

Runway and collections check

Use this month's real numbers from your books.
Include your own pay.

The monthly close: a tight-ship routine

Once a month, within the first week or two, close the books and review them. This is the single most useful financial habit an owner can build.

  1. Record every transaction for the month and match receipts.
  2. Reconcile every bank and credit card account to the statement.
  3. Review who owes you money and how long they've owed it.
  4. Review what you owe and when it's due.
  5. Compare this month's income statement with last month and last year.
  6. Check margin by type of work or client.
  7. Update your cash forecast for the next three months.

Forecast cash, don't just record it

Your books tell you what already happened. A cash forecast tells you what's coming. List the cash you expect to come in and go out week by week for the next 13 weeks, about one quarter. Many finance teams use this rolling 13-week view because it's far enough ahead to act and close enough to be accurate. When the forecast shows a dip, you have weeks to fix it instead of days.

Habits that protect your cash

  • Keep business and personal money separate. Separate accounts, separate cards. Mixing them makes your numbers meaningless.
  • Invoice the day the work is done. Every day you wait is a day added to when you get paid.
  • Set aside money for taxes as it comes in. Move a share of each payment into a separate account so tax bills never become a crisis. A tax professional can tell you the right share for your situation.
  • Build a cash cushion. Many advisors suggest keeping several months of expenses in reserve. Decide your number and treat it as a tripwire.
  • Get credit before you need it. Banks lend more easily to businesses that don't need the money yet.

General education only. For tax or accounting decisions about your business, talk to a qualified professional.