Arrears billing is the seller-side convention of raising the invoice after the goods or services it covers have been delivered, so the bill covers a period that has already closed. The direct contrast is advance billing, where the invoice goes out first and the delivery follows. Nothing about the arrangement is late, because here the word names a timing agreed at the outset rather than a missed due date.
Arrears Billing and Advance Billing
The two sit at opposite ends of one billing calendar. Arrears billing puts the invoice after performance, which is the natural order when the amount cannot be known until the period has run, as with metered utilities, hourly engagements and usage-priced subscriptions. Advance billing puts it first, which is how retainers, annual licenses and prepaid blocks are sold, with the work still owed when the money is asked for.
What the Seller Carries Before the Invoice
Billing later does not push the revenue later. An entity recognizes revenue when, or as, it satisfies a performance obligation by transferring a promised good or service to a customer (FASB Accounting Standards Update 2014-09, paragraph 606-10-25-23), and the date on the invoice plays no part in that test. Under arrears billing the sale belongs to the period the work was delivered, whatever month the bill is dated.
What the earned amount is called in the meantime turns on whether the right to payment is already unconditional, not on whether an invoice has gone out. Once nothing but the passage of time stands between the seller and payment, it is a receivable, and where something else has to happen first it is a contract asset, a right to consideration for goods or services already transferred. That split is set out in accounts receivable.
Advance billing is the mirror image. Consideration received or due before the goods or services are transferred leaves a contract liability instead, which is the balance deferral picks up and unwinds.
Billing Clients in Arrears in a CPA Firm
A firm bills time-based work in arrears for the same reason a utility does, because the amount is not knowable until the work is done. Hours run against an engagement, a return gets prepared, a cleanup turns out bigger than the scope quoted, and only then is there a number to invoice. Between delivery and the invoice, the time sits in work in progress, the unbilled time and cost recorded against an engagement, until someone releases it to an invoice.
Every day between finishing the work and releasing the invoice is a day added to the span the cash conversion cycle counts,, and it is the one stretch of that span the firm settles for itself. On the buyer’s side of the same transaction the cost lands in one period and the invoice in the next, which payable in arrears, accruals and accounts payable work through.
Common Questions
You are on the receiving end of arrears billing, so the invoice reaches you after the period it covers. That is a schedule rather than a late notice, and what the cost then does on your own books is set out in payable in arrears.
The opposite is advance billing, also written as billing in advance. There the invoice goes out before the goods or services are delivered, so the seller is holding consideration for work it still owes.
Not on its own. In a billing context the word fixes only when the invoice is raised, and the bare word carries a separate second sense, an amount still unpaid once its due date has passed. The two senses are pulled apart in payable in arrears.
Each invoice lands after the month it covers has ended, so a January bill charges for December. The first invoice under the arrangement therefore arrives only once the first month has closed, so a client signing at the start of a month gets nothing to pay until the next one.
Accountably places trained offshore accountants and tax preparers inside US CPA and EA firms, and a firm can put a block of its own billing and work in progress cleanup through a trial task before anything client facing depends on it.
