Evrenus Fırat Polat · ·
Accounts receivable (AR) is the total amount currently owed to your business by clients who've been invoiced but haven't paid yet. It's easy to treat as a background number. It isn't cash yet, so it's tempting not to think of it as real money. That's exactly why it deserves deliberate attention.
Why AR is worth tracking on its own
Revenue and AR can tell very different stories. A business can show strong revenue growth while its AR balance grows even faster. That means an increasing share of that "revenue" is money that hasn't actually arrived. Watching AR separately from revenue catches that pattern before it becomes a cash flow problem.
AR is also an asset on your balance sheet, but a fragile one. It only turns into cash if clients pay. The older an invoice gets, the less likely it is to be paid in full.
The core metrics
- Days Sales Outstanding (DSO) is the average number of days it takes to collect payment after a sale. Rising DSO over time is one of the earliest, clearest signals that collection is slowing down.
- AR turnover shows how many times per period you collect your average receivables. Higher turnover means faster collection relative to how much is typically owed to you.
- Invoice aging breaks receivables down by how overdue they are (0-30 days, 31-60, and so on). It shows not just how much is owed but how stale it's getting.
- Collection effectiveness compares what you collected with what you could have collected in a period.
Our DSO calculator, AR turnover calculator, and AR aging calculator calculate each of these directly.
Worked example: reading one month of AR
A design studio has these figures for September (30 days):
- Credit sales (invoices issued): $40,000
- Accounts receivable at month end: $38,000
- Of that AR: $22,000 not yet due, $9,000 is 1-30 days overdue, $5,000 is 31-60 days overdue, $2,000 is 61-90 days overdue
Step 1, DSO: ($38,000 ÷ $40,000) × 30 = 28.5 days.
Step 2, aging shares: $22,000 ÷ $38,000 = 58% current. $9,000 ÷ $38,000 = 24%. $5,000 ÷ $38,000 = 13%. $2,000 ÷ $38,000 = 5%.
What does this say? A DSO of 28.5 looks fine against Net 30 terms. But 42% of the balance is already past due. The DSO hides this because strong new sales dilute it. The aging split is what tells you where to look: the $7,000 older than 30 days needs a phone call this week.
Step by step: a weekly AR routine
- Export or list every unpaid invoice with its due date.
- Sort by days overdue and group into aging buckets.
- Contact anything newly overdue (see invoice follow-up).
- Escalate anything past 60 days with a firmer letter or call.
- Once a month, calculate DSO and write it down next to last month's figure.
- Note any client who is repeatedly late, and review their terms.
What healthy AR looks like
There's no universal healthy number. It depends heavily on your typical payment terms and industry. What matters more than any single snapshot is the trend: DSO holding steady or improving, aging skewed toward the newer buckets rather than accumulating past 90 days, and AR growing roughly in proportion to revenue rather than outpacing it.
Common mistakes
- Tracking revenue but not AR. Sales look great until the bank balance says otherwise.
- Looking only at the total. A total hides whether it is recent invoices or old ones.
- Leaving unpaid-but-paid invoices on the list. If payments are not matched to invoices, AR is overstated. See payment reconciliation.
- Never writing anything off. Old uncollectible invoices inflate AR. See bad debt.
- Measuring once. One reading is a snapshot. The trend is the signal.
Managing it, not just measuring it
Tracking these numbers only has value if it changes what you do. Rising DSO or an aging report skewing older is the signal to review your payment terms (see setting payment terms), tighten your follow-up process, or reconsider extending credit to clients with a consistently slow payment history.
Accounting rules for how receivables are reported, and whether you need to estimate doubtful accounts, differ between countries and between cash-basis and accrual-basis businesses. Ask your accountant which applies to you.
Accounts receivable isn't a problem to solve once. It's a number worth checking on a regular cadence, the same way you'd check cash in the bank.
FAQ
Is accounts receivable the same as unpaid invoices?
Mostly yes. AR is the total of invoices you've issued and not yet been paid for. Under accrual accounting it is recorded when you invoice. Under cash accounting you may not record it until money arrives.
How often should I review AR?
Weekly for the list of overdue invoices, monthly for the metrics. Small businesses with few clients can do both in about 20 minutes.
Can AR be too low?
A very low AR can mean you are paid upfront, which is good. It can also mean you offer no credit and lose sales to competitors who do. It is a trade-off, not a target.
What is the difference between accounts receivable and accounts payable?
Receivable is money owed to you. Payable is money you owe to suppliers. Both matter for cash flow, and our guide on working capital shows how they combine.