Accounts receivable is the money customers owe your business for goods or services you’ve already delivered but haven’t been paid for yet. It appears on your balance sheet as a current asset, representing cash you expect to collect within the next 12 months. If you’ve ever sent an invoice and waited for payment, you’ve dealt with accounts receivable.
How Accounts Receivable Works
Every time a business makes a sale on credit rather than collecting cash upfront, it creates an accounts receivable entry. The business has earned the revenue because it delivered the product or service, but the customer’s payment hasn’t arrived yet. That gap between delivery and payment is what accounts receivable tracks.
Say you run a landscaping company and complete a $2,000 project for a commercial client. You send an invoice with 30-day payment terms. At that moment, your business has $2,000 in accounts receivable. You’ve done the work and recognized the revenue, but the cash isn’t in your bank account yet. When the client pays 25 days later, the receivable disappears and your cash balance goes up by $2,000.
Customers have a legal obligation to pay these debts, which is why they count as assets on the balance sheet. The company has a reasonable expectation of collecting the money, so it carries real value for the business.
Why It’s Classified as a Current Asset
Accounts receivable is a current asset because the balance is expected to be collected within one year or less. Current assets are resources a company can convert to cash relatively quickly, alongside things like inventory and short-term investments. This classification matters because lenders and investors look at current assets to judge whether a business can cover its near-term obligations. A company with large receivables may look healthy on paper, but if those invoices go unpaid, the cash never materializes.
How It’s Recorded in the Books
When a credit sale happens, two entries hit the books simultaneously. The accounts receivable account gets a debit (increasing it), and the sales revenue account gets a credit (also increasing it). This is how the sale shows up as both revenue earned and money owed.
When the customer pays, the entries reverse direction. Cash gets a debit (increasing your bank balance), and accounts receivable gets a credit (reducing what’s owed). The net effect: the receivable converts into actual cash, and the revenue that was already on the books stays put.
This two-step process is central to accrual accounting, where revenue is recognized when it’s earned, not when cash changes hands. A business using accrual accounting might show strong revenue in a given month even if most of that money is still sitting in accounts receivable.
Tracking Collections With an Aging Report
An aging report sorts all outstanding invoices by how long they’ve been unpaid. The standard categories are:
- Current: Not yet past due
- 1 to 30 days past due
- 31 to 60 days past due
- 61 to 90 days past due
- 91+ days past due
This breakdown gives you a snapshot of collection health. If most of your receivables fall in the “current” bucket, cash flow is probably in good shape. If a growing share is drifting into the 60- or 90-day columns, that’s a warning sign. The longer an invoice goes unpaid, the less likely it is to be collected at all.
Businesses that notice frequent late payments, especially past the 60-day mark, often respond by sending invoices sooner, offering small discounts for early payment (like 2% off if paid within 10 days), or turning severely delinquent accounts over to a collections agency.
Measuring Efficiency With Days Sales Outstanding
Days sales outstanding, or DSO, tells you the average number of days it takes to collect payment after a sale. The formula is straightforward:
DSO = (Accounts Receivable / Total Credit Sales) × Number of Days in the Period
If your business had $50,000 in receivables and $150,000 in credit sales over a 30-day month, your DSO would be 10 days. That means you’re collecting payment roughly 10 days after invoicing, on average.
A lower DSO means faster collections and healthier cash flow. A higher DSO means money is tied up longer in unpaid invoices. What counts as “good” varies significantly by industry. Financial services companies typically operate with longer payment terms, while agriculture and fuel businesses need faster payment cycles to keep operations running. Small businesses generally need tighter DSO than large, diversified companies because they rely more heavily on steady cash flow to meet payroll and cover expenses. The most useful comparison is against other businesses in your own industry, not a universal benchmark.
What Happens When Customers Don’t Pay
Not every invoice gets collected. Some customers go bankrupt, dispute charges, or simply stop responding. To account for this reality, businesses set up an allowance for doubtful accounts, which is essentially a reserve that estimates how much of the outstanding receivables will never be paid.
This allowance needs to be recorded in the same period as the original sale. If you made $1.5 million in credit sales this quarter, you can’t wait until next year to acknowledge that some of that money won’t come in. You estimate the loss now and record a bad debt expense that reduces your reported income.
There are several ways to estimate how much to set aside:
- Percentage of sales: Apply a flat percentage to credit sales based on your historical collection rates. Simple and works well when payment patterns are stable.
- Aging analysis: Apply higher loss percentages to older invoices. A 30-day-old invoice might get a 2% expected loss rate, while a 90-day-old invoice might get 25%. This method reflects the reality that older debts are harder to collect.
- Risk classification: Sort customers into risk categories and estimate losses for each group separately. A government contract might carry almost no risk, while a startup client might warrant a higher reserve.
- Historical average: Companies with long track records can simply use their long-term average of uncollectible accounts as the estimate.
As a practical example, imagine a retailer with $1.5 million in outstanding invoices that expects about $75,000 to go unpaid. It would record $75,000 as a bad debt expense and add $75,000 to the allowance for doubtful accounts. When a specific customer actually defaults, the company doesn’t record a new expense. Instead, it reduces both the receivable and the allowance by the defaulted amount, since the loss was already anticipated.
Why Accounts Receivable Matters for Cash Flow
Revenue and cash flow are not the same thing, and accounts receivable is the reason why. A business can be profitable on its income statement while struggling to pay bills because its revenue is locked up in unpaid invoices. This is especially common for businesses that extend generous payment terms or work with slow-paying clients.
Managing receivables well means setting clear credit terms before the sale, invoicing promptly, following up on late payments, and knowing when to tighten terms for risky customers. For many small and mid-sized businesses, the difference between thriving and running out of cash comes down to how effectively they turn receivables into actual money in the bank.