Key Takeaways

• Unbilled AR holds earned, uninvoiced amounts. Invoicing drains it into accounts receivable and never touches the revenue account.

• ASC 606-10-45-3 requires receivables to be presented separately from contract assets, so the balance can split across two lines on one balance sheet.

• The split turns on conditionality: a contract asset's right to payment depends on something beyond time passing, a receivable's depends on nothing but time.

• Including unbilled AR in DSO moves the metric by 20 days on a $900,000 quarter with $200,000 unbilled, from 30.0 days to 50.0.

• Most DSO benchmarks exclude unbilled AR, which is why comparing your number to an industry figure needs the definition checked first.

What sits in the unbilled AR account?

Anything delivered that no invoice covers yet, which in a usage-billed product means the entire current period. The account exists because revenue recognition and invoicing run on different clocks, and something has to hold the difference.

The usual contents:

• Metered usage in the open period. Consumption already delivered, waiting for the cycle to close so billing in arrears can invoice it.

• Completed milestones not yet billed. Work signed off where the invoice waits on a schedule rather than on delivery.

• Services delivered ahead of the billing date. A month of work done before the invoice run reaches that account.

• Overages accrued mid-cycle. Usage past an allowance, earned as it happens and invoiced at cycle close, which makes overage charges a standing contributor to the balance.

What doesn't belong: anything invoiced (that's accounts receivable), anything paid in advance of delivery (that's deferred revenue, a liability), and anything you don't yet have a right to collect.

Two entries move a balance through the account, and only the first touches revenue:

1. On recognition. Debit unbilled AR, credit revenue. The earned amount is now on the books with no invoice in existence.

2. On invoicing. Debit accounts receivable, credit unbilled AR. Both sides are assets, so revenue is untouched. This is the step people misread as "recognizing revenue when we invoice."

Which line the balance presents on comes from ASC 606. ASC 606-10-45-3 requires companies to present receivables separately from contract assets, and the test is whether the right to payment depends on anything other than the passage of time. Finish the last performance obligation and the same dollars move from contract asset to receivable with no invoice involved and no revenue recognized.

How does unbilled AR distort DSO?

By up to 20 days on a normal quarter, depending purely on whether you put it in the numerator. Days sales outstanding divides receivables by revenue and scales by the days in the period, so any definition change to "receivables" moves the answer.

Take a company closing a quarter with $900,000 of revenue, $300,000 of invoiced AR, and $200,000 sitting in unbilled AR, over 90 days:

1. Invoiced AR only: ($300,000 ÷ $900,000) × 90 = 30.0 days

2. AR plus unbilled AR: ($500,000 ÷ $900,000) × 90 = 50.0 days

Same quarter, same collections performance, same customers. The 20-day gap is a definitional artifact, and it runs in a predictable direction: excluding unbilled AR always flatters the number.

What that means in practice:

• Published DSO benchmarks almost always mean invoiced AR, so comparing an all-in figure against them reads as underperformance that isn't real.

• Lengthening your billing cycle improves reported DSO while making cash conversion worse, because earned money sits in unbilled AR where the metric can't see it.

• A board pack that changes the definition between quarters shows a collections trend that never happened.

The fix is dull. Pick one definition, state it on the same page as the number, and report the unbilled balance separately so nobody has to reverse-engineer which one you used. Where the balance keeps climbing regardless of definition, the cause is usually revenue leakage rather than growth.

Related terms

The accounts around this one get confused constantly, and these draw the lines.

• Unbilled Revenue covers what creates the gap and how long it should stay open.

• Draft Invoice is the object that finally drains the balance into receivables.

• Payment Reconciliation picks up once an invoice exists and cash starts arriving.

• Billing in Arrears is the billing choice that guarantees a standing unbilled balance.

• Credit Memo is what reverses an amount after it has already left the account.

• Revenue Leakage is what a stale unbilled balance often turns out to be.

FAQ

Is unbilled AR the same as unbilled revenue?

They describe the same money from two angles, and practitioners use them interchangeably. Unbilled revenue is the revenue-side framing, concerned with what was earned. Unbilled AR is the account-side framing, concerned with the asset balance and where it presents. If someone hands you a number, ask whether they mean the balance or the period's activity.

Should unbilled AR be included in DSO?

Include it if you're measuring cash conversion, exclude it if you're measuring collections performance. An all-in figure captures the full lag from delivering work to holding cash, which is what a cash forecast needs. The invoiced-only figure isolates how well the collections team does with bills that exist. State which one you're reporting.

What is the journal entry for unbilled AR?

Recognition debits unbilled AR and credits revenue. Invoicing debits accounts receivable and credits unbilled AR, an asset-to-asset move that leaves revenue alone. The second entry is often assumed to be the one that books revenue, and getting that backwards is what produces double-counted revenue at close.

Why is our unbilled AR balance growing?

Either the business grew, or invoices stopped going out. Divide the balance by average daily revenue to get the days of earned revenue sitting uninvoiced, then compare that to your billing frequency. If the days figure exceeds the cycle length, invoices are stuck rather than merely pending.