Introduction
A business may deliver a product in one month, send the invoice in the next, and receive payment later still. Those dates answer different questions: delivery concerns what the business has provided, billing concerns what it has charged, and collection concerns what it has received in cash. Under accrual accounting, the date that matters for revenue is when the business has earned it by providing the promised goods or services.
This distinction is useful when preparing financial statements for a reporting period. If a business completes work before the period ends but bills afterward, the later invoice does not move the work into the later period. Conversely, receiving cash before doing the work does not by itself mean the revenue has been earned.
What It Means to Earn Revenue
A useful starting point is the agreement with the customer. What goods or services did the business promise, and when has it provided them? A business has not earned revenue merely because it has agreed to a future sale, prepared an invoice, or received a deposit. It earns revenue as it transfers the promised goods or performs the promised services.
For a simple sale, suppose a business has one product to deliver for a fixed price. If the customer obtains control when the product is delivered and accepts it, delivery and acceptance mark the earning date. The customer may pay immediately or later; that timing does not change when control transferred. If the contract instead says that control transfers at another point, the relevant contract terms and facts determine the date.
A service may be provided in a single completed task, such as repairing a machine. In that case, the service is generally earned when the promised repair is completed and made available to the customer. Other services, such as daily monitoring over a month, are delivered over time. Revenue is earned as the customer receives that ongoing service, not all at the beginning merely because the contract has been signed.
The following examples assume an enforceable customer agreement, a clearly specified service or good, a fixed price, and that collection of the agreed amount is reasonably expected. They also assume there are no returns, price adjustments, or other contract terms that change the amount earned. If the arrangement includes multiple promises, uncertain consideration, or conditions affecting transfer, the analysis must account for those facts rather than treating the whole invoice as automatically earned.
Why the Earning Date Controls
Accrual accounting reports the results of the activity in the period when the business performs it. The amount of revenue for a simple, fixed-price obligation can be expressed as:
For one distinct good or one completed service with a fixed price, the transferred amount may be the full agreed price. For a service delivered evenly over time, the amount recognized for a period reflects the portion of service actually provided during that period. This is not a rule to recognize cash receipts gradually or to match revenue to invoices: it follows from measuring what the business has provided.
The accounting equation helps explain why the accounting entry depends on the billing and payment facts even though the revenue date depends on performance. When revenue is earned but not yet paid, the business has provided something in exchange for a right to consideration, so it may record a receivable. The revenue increases equity through income. When cash arrives before performance, the business has cash but still owes the promised goods or services; before it performs, that amount is not earned revenue.
In compact form, the core distinction is:
This explains why two businesses with the same delivery date and price can report revenue in the same period even if one is paid immediately and the other is paid weeks later. The receivable or cash balance differs, but the date the promised item was transferred does not.
State what good or service the business agreed to provide and the agreed amount, using the contract facts.
For a good, identify when the customer obtains control. For a service, identify when the work is completed or the service is delivered over time.
Record the amount earned in the period the good or service is transferred, not automatically in the period of billing or collection.
Determine separately whether the business has cash, a receivable, or an obligation to provide goods or services for a payment already received.
Worked Examples
Worked Example: Delivered Goods Billed and Paid Later
A supplier sells 40 replacement sensors for $210 each. The customer takes delivery and obtains control on December 29. The supplier sends the invoice on January 5 and receives the full payment on January 20. Assume one performance obligation, a fixed price, and no return or collection uncertainty. In which period is revenue recognized, and what are the relevant amounts?
Method. Identify the transfer date first, then calculate the agreed price. The customer obtains control when the sensors are delivered on December 29, so the earning date is in December.
Step 1: Calculate the transaction amount.
Step 2: Recognize revenue on delivery. The business has earned $8,400 in December, even though it has not yet billed the customer or collected cash. On December 29, it records a debit to Accounts Receivable of $8,400 and a credit to Sales Revenue of $8,400.
Step 3: Account for the later billing and collection. Under the stated facts, the right to payment was already recorded when the goods were delivered. Sending the invoice on January 5 documents the amount due; it does not earn a second $8,400 of revenue. When the customer pays on January 20, the business records a debit to Cash of $8,400 and a credit to Accounts Receivable of $8,400.
Check. December revenue is $8,400, and the January collection reduces the receivable by the same $8,400. No revenue is recognized a second time in January. The common mistake avoided is assigning the sale to the invoice or cash date instead of the delivery date.
Worked Example: Cash Received Before a Service Is Completed
A laboratory agrees to perform four monthly equipment inspections for a customer at $600 per inspection. The customer is billed $2,400 on September 25 and pays the full amount on October 1. The first inspection is completed on October 31; the other three will be performed in later months. Assume each inspection is a distinct service and the agreed amount is fixed. How much is earned in October?
Method. Separate the cash received from the inspections performed. Because each inspection is a distinct service, the price for each is $600 and revenue is earned as each inspection is completed.
Step 1: Confirm the total billed and collected.
The full $2,400 has been collected, but only one of the four inspections has been completed by October 31.
Step 2: Calculate the amount earned in October.
The business recognizes $600 of inspection revenue in October, when it completes the first inspection. At the time of collection on October 1, the business has cash and still owes four inspections. The unperformed portion is $2,400 before any inspection is completed. After the October inspection, $600 has been earned and $1,800 remains associated with the three inspections still owed.
Check. Total cash received is $2,400; October revenue is $600; and the remaining amount for future inspections is $2,400 − $600 = $1,800. The common mistake avoided is recognizing all four months of revenue on the payment date.
Worked Example: Revenue Earned Over a Service Period
A monitoring firm provides daily equipment monitoring throughout April for a fixed monthly fee of $1,500. The service begins April 1 and is completed at the end of April. The firm sends its invoice on May 4 and collects payment on May 18. Assume the service is delivered evenly throughout April and the agreement has no separate obligations or variable amounts. How much revenue is earned by April 30?
Method. Because the customer receives the monitoring service as it is performed, recognize revenue over the service period. Under the assumption that it is delivered evenly, calculate the portion of the monthly service provided during April.
Step 1: Determine the portion delivered. The firm provides all of the contracted April service during April. Thus the completed portion is \(30/30 = 1\), or 100% of the monthly service.
Step 2: Apply that portion to the fixed fee.
The firm earns $1,500 in April. The May 4 invoice and May 18 collection occur after the April service is complete, so neither changes the period in which the service was provided.
Check. The full month of service was delivered in April, so the amount earned for that service is the full $1,500. The common mistake avoided is moving April revenue into May just because billing and payment occur in May.
Common Mistakes and Exam Traps
A date in a problem may be prominent without being the revenue recognition date. In particular, a billing date can tempt a reader to use a convenient accounting document as evidence that the work is complete. Instead, identify what the customer has received by the reporting date.
- Recognizing revenue when cash arrives. Cash can be received before or after the business performs. Ask what goods or services have actually been transferred by the date in question.
- Recognizing revenue when an invoice is issued. Invoicing requests payment; it does not prove that the entity has performed. A bill issued before delivery does not, on its own, make an undelivered product earned revenue.
- Recognizing a full service contract at the start. If a service is delivered over several periods, revenue is earned as the customer receives the service, subject to the contract terms and the pattern of performance.
- Confusing “completed” with “invoiced.” A job can be complete before the paperwork is sent. If the customer has received the promised service, a later administrative step does not ordinarily move that performance to a later period.
For example, suppose a candidate sees that a $5,000 project was invoiced on March 3, paid on March 10, and completed on March 28. The wrong calculation is to recognize $5,000 on March 3 (or March 10) merely because the invoice or cash is recorded then. If the stated completion on March 28 is when the customer receives the promised project, the correction is to recognize the $5,000 in March on the basis of that performance. If completion instead occurred in a different reporting period, that period would generally contain the revenue, despite the March billing or payment.
Check Your Understanding
For each problem, identify the amount and period of revenue earned from the stated performance. Assume the agreements are enforceable, prices are fixed, collection is reasonably expected, and no returns or other adjustments apply unless stated otherwise.
- A printer delivers and transfers control of 18 label machines at $250 each on June 30. It invoices the customer July 3 and receives payment July 22. How much revenue is earned in June? (Answer: $4,500 in June.)
- A technician completes a one-time calibration service on November 29 for a fixed fee of $720. The invoice is sent December 2 and cash is collected December 15. In which month is the fee earned? (Answer: $720 in November.)
- A customer pays $3,600 on February 1 for six distinct monthly safety reviews at $600 each. One review is completed in February and the remaining five are scheduled for later months. How much is earned in February, and how much remains for the future reviews? (Answer: $600 earned in February; $3,000 relates to the five future reviews.)
- A communications firm provides a fixed-price, $2,400 monitoring service evenly over the 30 days of September. By September 20, it has provided 20 days of service. The invoice is sent October 2. How much has been earned by September 20 under the stated even-delivery assumption? (Answer: $1,600, calculated as $2,400 × 20/30.)
- A supplier invoices $9,000 for a single shipment on December 28, but the goods remain under the supplier’s control until delivery and customer acceptance on January 4. The customer pays on January 10. Assuming control transfers at acceptance, in which period is the $9,000 earned? (Answer: January, on January 4 when control transfers.)