AR isn't revenue: how to get paid faster

A business can grow revenue every month, be profitable on paper, and still not be able to make payroll. It happens more often than people expect, and the cause is almost always the same: the money has been earned but not collected.

Revenue is recognised when you deliver. Cash arrives when the customer pays. In a growing business that gap widens, because every new sale adds to receivables before it adds to the bank. Growth consumes cash — and receivables are usually where it goes.

The number that measures it

Days sales outstanding tells you how long, on average, it takes to convert an invoice into money.

DSO = (Accounts receivable ÷ revenue for the period) × days in the period

$300,000 in receivables against $200,000 of monthly revenue gives a DSO of about 45 days. If your terms are net 30, you are running fifteen days late on average — and those fifteen days are being financed by you.

The practical way to feel it: at $200,000 a month, every day of DSO is roughly $6,600 of cash sitting outside your business. Cutting DSO from 45 to 35 days releases about $66,000 — once, permanently, without selling anything new.

Where the days actually go

Owners tend to assume the problem is customers paying late. Often it isn't, or isn't only.

• Invoicing lag. Work finishes on the 3rd, the invoice goes out on the 28th. You have just added 25 days to your own DSO before the customer has done anything.
• Invoice errors. Wrong PO number, missing detail, sent to the wrong person. The clock resets and nobody tells you.
• No follow-up until it's painful. The first chase happens at day 60, by which point the invoice is buried.
• Terms nobody negotiated. A large customer imposed net 60 during onboarding and it was never revisited.
• One dominant customer. If 40% of revenue comes from a client who pays at day 70, your average is their average.

What actually shortens it

Invoice on completion, not on a schedule

The cheapest improvement available to most businesses. Moving from monthly batch invoicing to invoicing on delivery can take a week or more out of DSO immediately, and costs nothing.

Make the first contact before the due date

A short note three days ahead — confirming the invoice arrived and is scheduled — is not chasing. It catches the errors and the "we never received it" cases while there's still time, and it does not damage the relationship.

Ask for deposits on anything large

For project work, 30–50% up front is normal in most industries. It is the difference between funding the work yourself and having the customer fund it.

Segment your ageing

Do not treat all late invoices the same. A good customer at day 40 needs a reminder. A repeat offender at day 75 needs a different conversation, and possibly different terms.

Make paying easy

If paying you requires a cheque and a posted remittance advice, some of your DSO is self-inflicted.

The one to watch

Track DSO monthly and watch the trend, not the level. A DSO of 45 that has been 45 for two years is a working-capital fact you can plan around. A DSO of 38 that has drifted to 45 over two quarters is a warning — either a large customer is slowing down, or your process has quietly degraded. Both are much cheaper to fix at 45 than at 60.

The DSO calculator will tell you where you sit and what a ten-day improvement would release in cash. It takes about a minute.