A service company sends a rig to a location, sits on standby for two days, works for nine, and demobilizes. The invoice goes out at the end. The accounting question is which period earned what.
Owners answer it by looking at when the invoice was cut. That is not the standard, and the gap between billing and revenue is where these companies get into trouble with their own financial statements.
The Contract Is the Starting Point, Not the Invoice
Current revenue standards start with the contract and the promises inside it. A master service agreement plus a work order is one arrangement, and the promises in it may be several.
Mobilization, standby, the service itself, consumables, equipment rental. Each is a candidate for separate treatment, depending on whether the customer can benefit from it on its own. Todd Muslow CPA points out that most operators never make this assessment because the invoice already grouped everything into one number.
The billing arrangement is evidence of the contract. It is not the contract, and a day rate structure does not automatically mean revenue is earned by the day.
Over Time or at a Point in Time
Some service revenue is recognized as the work happens, because the customer receives and consumes the benefit as it is performed. Routine field service usually fits. Others belong at a point in time, when control transfers.
Getting this wrong shifts revenue across period ends. A job spanning December and January either splits or does not, and the answer determines what the year looks like. Todd Muslow CPA has seen the same job accounted for two different ways by the same company in consecutive years.
Mobilization is the recurring argument. It rarely transfers anything to the customer by itself, which usually means the fee is not its own revenue event even though it has its own line on the invoice.
Variable Consideration Is the Part That Bites
Bonuses for early completion. Penalties for downtime. Price escalations tied to an index. Volume discounts that only become clear at the end of a season.
The standard requires an estimate of that variable amount, constrained so that a significant reversal is not probable. Which means recognizing an amount you are reasonably sure will survive, not the best case on the contract.
Service companies routinely recognize the full potential bonus and reverse it later. That produces a revenue line that swings for reasons unrelated to the work performed, and it makes the statements less useful to the people who rely on them.
Why Any of This Matters to a Private Company
An owner might reasonably ask why a closely held service company should care about a standard written with public filers in mind. The answer is that lenders, bonding companies, and buyers all read the statements.
A borrowing base tied to receivables and revenue is only as sound as the revenue. Todd Muslow CPA notes that a covenant calculation built on billing timing rather than performance can breach in a month where nothing changed operationally.
There is also the internal case. If revenue lands when invoices are cut, then margin by job is unknowable, and pricing decisions get made on a feel for the work rather than on a number.
Todd Muslow CPA of Shreveport, Louisiana, is a partner of Muslow+Agnew Group, LLC, working with closely held businesses on financial reporting, taxation, and consulting. He recommends documenting the revenue policy contract type by contract type, once, before the next year end forces the question.
The policy also has to survive staff turnover. A revenue approach living in the controller’s judgment leaves when the controller does, and the next person applies a reasonable approach that is simply different. Todd Muslow CPA treats the written policy as the thing that makes this year comparable to last year.
Comparability is the whole reason any of this is standardized. A statement that cannot be compared to the prior period tells a reader almost nothing, no matter how carefully each individual number was computed.
The invoice tells you what you asked for. The contract tells you what you earned. Those are different facts, and only one of them belongs on the income statement.