Why Cash Timing Matters
A business can receive or pay cash in a different period from the one in which it earns revenue or incurs an expense. Under accrual accounting, revenue is recognized when it is earned and expenses when they are incurred, rather than simply when cash changes hands. A period-end adjustment records activity in the period to which it belongs.
The practical classification question is two-part: Has the revenue been earned or the expense been incurred? If so, has the related cash already been received or paid? The answers determine whether the adjusting entry records a receivable, a payable, or the use or earning of an amount already recorded in advance.
The Four Categories
Classify an item by both its accounting event and its cash timing. The four common categories are accrued revenue, deferred revenue, accrued expense, and prepaid expense. “Deferred revenue” is also called unearned revenue; “prepaid expense” is also called a deferred expense.
- Accrued revenue: Revenue has been earned, but cash has not yet been received. The adjustment generally debits a receivable and credits revenue.
- Deferred revenue: Cash has been received, but some or all of the related revenue has not yet been earned. As it is earned, the adjustment generally debits unearned revenue and credits revenue.
- Accrued expense: An expense has been incurred, but cash has not yet been paid. The adjustment generally debits expense and credits a payable.
- Prepaid expense: Cash has been paid, but some of the related resource or service remains unused. As it is used, the adjustment generally debits expense and credits the prepaid asset.
These are common patterns, not substitutes for identifying what has actually happened. For example, a payment received in advance is not automatically revenue: the business must have earned it. Likewise, a cash payment is not automatically an expense of the current period if it buys a benefit that will be used later.
| Category | Cash timing | Period-end event | Typical adjustment |
|---|---|---|---|
| Accrued revenue | Cash later | Revenue earned | Debit receivable; credit revenue |
| Deferred revenue | Cash earlier | Revenue earned after receipt | Debit unearned revenue; credit revenue |
| Accrued expense | Cash later | Expense incurred | Debit expense; credit payable |
| Prepaid expense | Cash earlier | Resource used or service received | Debit expense; credit prepaid asset |
The usual adjusting entries do not involve cash: the receipt or payment occurred earlier or will occur later. An adjustment therefore updates the revenue or expense and its related receivable, payable, prepaid asset, or unearned-revenue balance. Exact account names depend on the transaction.
Why the Adjustments Follow from Recognition
The classification can be derived from the accounting requirement to record earned revenue and incurred expense in the period they belong to. If a service has been completed but payment is still due, the business has revenue for that period and a claim to receive cash. Recording only the revenue would leave that claim unrecorded; recording only the receivable would leave the earned revenue unrecorded. The adjusting entry records both sides.
The same reasoning applies to expenses: if a cost has been incurred but not yet paid, the period needs the expense and the business needs to record the amount owed. For an advance payment, the initial receipt or payment is recorded before earning or use. The adjustment then transfers only the portion earned or used from the advance balance to revenue or expense.
For a service earned evenly over time, the portion earned by a reporting date can be determined from the elapsed service period. For a cost consumed evenly over time, the portion used is determined the same way. This calculation requires the explicit assumption that earning or use is uniform; if the service or resource is consumed unevenly, use the actual pattern instead.
Worked Example: Revenue Earned Before Collection
A consulting firm completes a data review for a client on December 31. The agreed fee is $5,600, and the firm will invoice the client in January. No amount has been collected by year-end, and no part of the fee was recorded earlier. Determine the classification and adjusting entry. Assume the work was fully completed by December 31 and ignore taxes.
Method. First compare earning with cash collection. The firm has completed the work, so it has earned $5,600. Collection is scheduled for January, so cash comes after the revenue is earned. This is accrued revenue.
Step 1: Determine the amount earned. The entire review is complete, so the amount earned by December 31 is $5,600. There is no unearned portion to exclude.
Step 2: Identify the accounts. The firm has a claim against the client, so it records accounts receivable. The completed service belongs in consulting revenue.
Step 3: Record the adjustment. Debit accounts receivable $5,600 and credit consulting revenue $5,600. The debit records the amount due; the credit recognizes revenue in the period of completion.
Check and common mistake avoided. The adjustment has equal debits and credits of $5,600, and it includes no cash because collection has not happened. Waiting until January to record revenue would mistake collection timing for earning timing.
Worked Example: Cash Received Before Revenue Is Earned
On November 1, a hypothetical training provider receives $9,600 for a four-month program running from November 1 through February 28. The provider initially records the full receipt as unearned revenue. Training is delivered evenly over the four months. At December 31, determine the adjustment and the remaining unearned amount. Assume no taxes and that the stated months are equal service periods.
Method. This is deferred revenue because cash arrived before all the training was delivered. Recognize only the portion earned by December 31.
Step 1: Find the amount earned per month. The program lasts four months, so $9,600 ÷ 4 = $2,400 per month.
Step 2: Find the months delivered by December 31. November and December are two complete months. The earned amount is 2 × $2,400 = $4,800.
Step 3: Record the adjustment. Debit unearned revenue $4,800 and credit training revenue $4,800. The debit reduces the advance balance for the service now delivered; the credit recognizes the revenue earned.
Step 4: Check the unearned balance. The original advance was $9,600, of which $4,800 has been earned. The remaining unearned amount is $9,600 − $4,800 = $4,800.
Check and common mistake avoided. The $4,800 adjustment equals the revenue earned, not the entire cash receipt. Expensing or recognizing all $9,600 as current revenue would ignore the two months of training still to be delivered.
Worked Example: Expense Incurred Before Payment
A small firm’s reporting date is March 31. Employees have earned three unpaid workdays at a combined rate of $1,120 per workday. The firm will pay them in April, and none of this payroll has yet been recorded. Determine the classification and adjustment. Assume the daily rate applies equally to each of the three days.
Method. The employees have already performed the work, so the firm has incurred a payroll expense. Since payment will occur in April, the expense is accrued.
Step 1: Calculate the amount owed. Three days × $1,120 per day = $3,360.
Step 2: Identify the accounts. Record salaries expense for the work performed and salaries payable for the unpaid amount.
Step 3: Record the adjustment. Debit salaries expense $3,360 and credit salaries payable $3,360. The expense is included in the period in which employees performed the work; the payable records the amount still due.
Check and common mistake avoided. Both sides of the entry equal $3,360, with no cash account. Recording the expense only when payroll is paid in April would omit the March cost of work already performed.
Worked Example: Cash Paid Before an Expense Is Used
On October 1, a business pays $4,800 for 12 months of insurance coverage, beginning October 1. The payment is initially recorded as prepaid insurance. Coverage is provided evenly over the 12 months. At December 31, determine the period-end adjustment and the remaining prepaid amount. Assume no taxes.
Method. This is a prepaid expense because cash was paid before all the coverage was used. Recognize the portion of coverage that has expired by December 31.
Step 1: Calculate the monthly cost. $4,800 ÷ 12 months = $400 per month.
Step 2: Calculate coverage used. October, November, and December are three months, so the insurance expense is 3 × $400 = $1,200.
Step 3: Record the adjustment. Debit insurance expense $1,200 and credit prepaid insurance $1,200. This transfers the expired portion from the prepaid balance to expense.
Step 4: Check the remaining prepaid amount. $4,800 − $1,200 = $3,600. This equals nine months of unused coverage at $400 per month.
Check and common mistake avoided. The adjustment is $1,200, not the full $4,800 payment. Expensing the full payment in October would ignore the nine months of coverage that remain after December 31.
A Reliable Classification Process
A short sequence of questions prevents most timing errors. Do not begin with the account name or with the date cash moved. Begin with what has been earned or incurred by the reporting date, then establish the cash timing and calculate the portion that belongs in the period.
Ask whether a service has been delivered, revenue earned, a resource used, or an expense incurred.
If cash follows the earning or incurring event, consider an accrual. If cash precedes it, consider a deferral.
Use actual service or consumption information. Use a time-based fraction only when earning or use is uniform over time.
Record the revenue or expense and its associated receivable, payable, unearned revenue, or prepaid asset. Confirm total debits equal total credits.
Common Classification Traps
The most frequent error is to treat cash timing as the recognition rule. Cash received is not sufficient evidence that revenue has been earned, and cash paid is not sufficient evidence that an expense belongs entirely to the current period. The reverse is also true: absence of cash does not prevent recognition when revenue has been earned or an expense incurred.
- Wrong: A $4,800 annual insurance payment is recorded entirely as expense at the payment date. Correction: If only three months of evenly provided coverage have expired, expense only three months and retain the rest as prepaid insurance.
- Wrong: A customer’s advance payment is credited entirely to revenue even though service remains to be delivered. Correction: Recognize the earned portion and leave the undelivered portion in unearned revenue.
- Wrong: Unpaid payroll is omitted because no cash has left the business. Correction: Record the expense and payable for work already performed.
- Wrong: A completed service is not recorded until the invoice is paid. Correction: Record earned revenue and the receivable when collection is still pending.
The central check is whether the adjustment represents an event of the current reporting period. If it does, the entry should recognize that period’s revenue or expense and leave the related balance at the amount still unearned, unused, receivable, or payable.
Check Your Understanding
For each situation, classify the item, identify the adjustment accounts, and calculate the amount when needed.
- A firm completes a $3,250 equipment inspection on June 30 and will collect the fee in July. Nothing has been recorded. What adjustment is needed? (Answer: Accrued revenue; debit accounts receivable $3,250 and credit inspection revenue $3,250.)
- A design studio receives $7,500 on September 1 for five equal monthly service periods, September through January. It initially records the receipt as unearned revenue. At October 31, how much revenue has been earned and what adjustment is needed? (Answer: $3,000 earned; debit unearned revenue $3,000 and credit service revenue $3,000; $4,500 remains unearned.)
- At December 31, a company owes $2,760 for warehouse work completed in December. The amount will be paid in January and has not been recorded. Classify and record the adjustment. (Answer: Accrued expense; debit warehouse expense $2,760 and credit accounts payable $2,760.)
- A business pays $6,000 on May 1 for 10 months of evenly provided equipment support and records it as a prepaid asset. At July 31, calculate the adjustment and remaining prepaid balance. (Answer: Three months used; debit support expense $1,800 and credit prepaid support $1,800; remaining prepaid balance $4,200.)
- A publisher receives $2,400 on December 1 for four equal monthly advertising placements, December through March, and initially credits unearned revenue. At December 31, what is the earned amount and adjusting entry? (Answer: $600 earned; debit unearned revenue $600 and credit advertising revenue $600; $1,800 remains unearned.)