Difficulty: Intermediate to Advanced | Prerequisites: Familiarity with journal entries, depreciation methods, the income statement, the balance sheet, and the statement of retained earnings. Review the Accounting Estimate Changes notes first.
Error corrections are the other major piece of Chapter 20, alongside accounting estimate changes and changes in reporting entity. The stakes are higher here: when a company discovers it recorded something incorrectly in a prior period, the treatment depends on when the error is found, whether it affected net income, and whether the error has already self-corrected over time. This is one of the most journal-entry-heavy topics in Intermediate Accounting II, and exams will almost certainly give you a scenario and ask you to walk through the correcting entries, the restatement logic, and the disclosure requirements.
Errors found in the same period are simply fixed. Errors that affected prior-period financial statements require restatement of those statements, correcting journal entries, and (if retained earnings were affected) a prior-period adjustment. Disclosure notes are always required when statements have been issued to the public.
Error correction
A journal entry (and, where applicable, a restatement of prior financial statements) made to fix an account balance that was recorded incorrectly. Think of it as: something was wrong from the start, and now we are setting the record straight.
Prior-period adjustment
An adjustment to the opening balance of retained earnings in the statement of retained earnings, used when an error affected a prior period's net income and, by extension, retained earnings. In simple terms, this is how you rewrite the starting line of retained earnings to reflect what it should have been.
Retrospective restatement
The process of going back and correcting previously issued financial statements to show what they would have looked like had the error never occurred. Think of it as redoing history with the correct numbers.
Reclassification
Moving an amount from one account to another within the same financial statement when the original classification was wrong but net income was unaffected. In simple terms, the total was right but the label was wrong.
Self-correcting error
An error that, over time, reverses itself through the normal operation of the accounting system (e.g. an inventory miscount that affects COGS in one year and then corrects in the next). Think of it as: the books eventually balance out, but the individual years were still misstated.
Disclosure note (for errors)
A required footnote describing the nature of the error and the impact of its correction on net income, income from continuing operations, and earnings per share. Always required when financial statements have been issued to the public.
If you catch the error before the financial statements are issued, you simply fix it. No restatement, no prior-period adjustment, no disclosure note (because the error never made it into the published statements).
A company paid $3 million for replacement computers and recorded the expenditure as maintenance expense. The error was discovered a week later, within the same period.
Step 1: Reverse the erroneous entry.
Debit: Cash $3 mil
Credit: Maintenance Expense $3 mil
Step 2: Record the correct entry.
Debit: Equipment $3 mil
Credit: Cash $3 mil
No disclosure note is required because the error was caught before the statements went out. If, however, the financial statements had already been issued to the public, a disclosure note would be required regardless.
Sometimes an error involves a misclassification between two accounts on the same financial statement. Net income is unaffected because the total was correct; only the labels were wrong. This is a reclassification.
A company incorrectly recorded a $2 million note receivable as accounts receivable. The error was discovered a year later.
Step 1: Correct the accounts.
Debit: Note Receivable $2 mil
Credit: Accounts Receivable $2 mil
Step 2: Restate last year's balance sheet to show the note receivable where it should have appeared. Accounts receivable is adjusted down; note receivable is brought up.
Step 3: No prior-period adjustment to retained earnings is necessary because net income was never affected. The total assets on the balance sheet were correct; only the breakdown between two asset accounts was wrong.
Step 4: A disclosure note describes the nature of the error. It states that there was no impact on net income, income from continuing operations, or earnings per share.
This is the most complex and exam-heavy scenario. When an error affects net income, it also affects the balance sheet, retained earnings, and potentially income taxes.
Both the income statement and balance sheet must be retrospectively restated.
Incorrect account balances must be corrected with journal entries.
If retained earnings is affected, the correction appears as a prior-period adjustment to the beginning balance in the statement of retained earnings.
Income taxes are usually affected. Amended tax returns may be needed, either to pay additional taxes or to claim a refund for taxes overpaid.
A disclosure note describes the nature of the error and its impact on each year's net income, income from continuing operations, and earnings per share.
In 2016, internal auditors discovered that the company had debited an expense account for the $7 million cost of sorting equipment purchased at the beginning of 2014. The equipment had a five-year useful life, no residual value, and the company uses straight-line depreciation.
What originally happened (the error):
2014: Debit Expense $7 mil, Credit Cash $7 mil
What should have happened:
2014: Debit Equipment $7 mil, Credit Cash $7 mil
2014: Debit Depreciation Expense $1.4 mil, Credit Accumulated Depreciation $1.4 mil
2015: Debit Depreciation Expense $1.4 mil, Credit Accumulated Depreciation $1.4 mil
Working out the numbers:
Annual depreciation = $7 mil / 5 years = $1.4 mil per year. By the end of 2015, total depreciation that should have been recorded = $1.4 mil + $1.4 mil = $2.8 mil.
Total expenses were overstated by $7 mil (the full amount was expensed in 2014) minus $2.8 mil (the depreciation that should have been recorded over 2014 and 2015) = $4.2 mil. Net income and retained earnings were therefore understated by $4.2 mil.
Correcting journal entry (in 2016):
Debit: Equipment $7 mil
Credit: Accumulated Depreciation $2.8 mil
Credit: Retained Earnings $4.2 mil
2016 beginning balance: Prior-period adjustment of $4.2 mil (calculated as $7 mil less $2.8 mil in depreciation through end of 2015).
2015 beginning balance: Prior-period adjustment of $5.6 mil (calculated as $7 mil less $1.4 mil in depreciation through end of 2014).
2014 beginning balance: No adjustment, because the error did not occur until after the beginning of 2014.
The note describes the nature of the error and the impact on each year's net income. In this example, net income was understated by $5.6 mil in 2014 and overstated by $1.4 mil in 2015. Income from continuing operations and earnings per share are also reported.
If the error is not discovered until 2019 or later (after the equipment's five-year life has ended), no correcting entry is needed at all. By that point, the cumulative depreciation expense equals the original amount that was incorrectly expensed, and retained earnings has self-corrected.
Most errors eventually self-correct through the normal flow of the accounting system. The classic example is an inventory miscount. Even though the error washes out over two periods, the individual years' financial statements are still misstated, and restatement is required for any year that was wrong.
In early 2016, a company discovered that $1 million of inventory had been inadvertently excluded from its 2014 ending inventory count.
The ripple effect across two years:
Item | 2014 Effect | 2015 Effect |
|---|---|---|
Ending inventory | Understated (U) | Correct |
Beginning inventory (next year) | n/a | Understated (U) |
Cost of goods sold | Overstated (O) | Understated (U) |
Net income | Understated (U) | Overstated (O) |
Retained earnings | Understated (U) | Corrected (self-corrects) |
The logic: understated ending inventory in 2014 means COGS was overstated (because ending inventory is subtracted in the COGS formula). That overstated COGS reduces 2014 net income. In 2015, that same understated figure becomes the beginning inventory, which understates COGS and overstates net income by the same amount. By the end of 2015, retained earnings is back to where it should be.
Debit: Inventory $1 mil
Credit: Retained Earnings $1 mil
Restate the 2014 financial statements to reflect the correct inventory, COGS, and retained earnings.
No correcting journal entry is needed because retained earnings has already self-corrected. However, the 2015 financial statements are still retrospectively restated to show the correct COGS and retained earnings figures for that year.
Students often think that if an error self-corrects, no restatement is ever needed. That is wrong. Even self-correcting errors require restatement of the individual years that were misstated, because each year's financial statements must be accurate on their own.
Students sometimes forget the tax implications of income-affecting errors. When net income changes, taxable income usually changes too, which means amended tax returns and adjustments to income tax payable or receivable.
Students frequently confuse the correcting entry with the disclosure. The correcting entry fixes the books; the disclosure note explains the error and its impact to readers. Both are required (when statements have been issued).
Students may mix up the direction of the prior-period adjustment. If expenses were overstated (and net income understated), the adjustment to retained earnings is a credit (increase), not a debit.
The equipment-expensed-instead-of-capitalised scenario is a classic exam question. Be ready to compute the correcting entry, the depreciation that should have been recorded, and the prior-period adjustment amount.
Know how to trace an inventory error across two years using the understated/overstated logic. Exams will give you a miscount and ask what happened to COGS, net income, and retained earnings in both the error year and the following year.
Expect a question that tests whether a correcting entry is still needed. The trigger: has enough time passed for the error to self-correct? If the asset is fully depreciated or the inventory error has washed through, no entry is needed, but restatement may still be required.
Disclosure content is testable. For any error that affected issued financial statements, the note must cover: the nature of the error, the impact on net income, income from continuing operations, and earnings per share.
True or False: An error discovered in the same reporting period requires a disclosure note. (False, unless the financial statements have already been issued to the public.)
Fill in the blank: When an error affects prior-period net income, the correction to retained earnings is reported as a __________. (Prior-period adjustment to the beginning balance.)
True or False: An inventory understatement in Year 1 causes COGS to be understated in Year 1. (False. Ending inventory understated means COGS is overstated.)
Fill in the blank: If a $7 mil equipment purchase was fully expensed in Year 1 instead of capitalised over 5 years, the correcting entry in Year 3 would credit Accumulated Depreciation for __________. ($2.8 mil, which is two years of straight-line depreciation at $1.4 mil/year.)
True or False: A self-correcting error never requires restatement of prior financial statements. (False. The individual misstated years must still be restated.)
Q: A company paid $3 million for new computers and recorded the cost as maintenance expense. The error was found one week later, in the same period. What entries are needed?
A: Reverse the error (Debit Cash, Credit Maintenance Expense for $3 mil), then record the correct entry (Debit Equipment, Credit Cash for $3 mil). No disclosure note is required unless the statements had already been issued.
Q: A $2 million note receivable was recorded as accounts receivable. The error was found a year later. Does this require a prior-period adjustment to retained earnings?
A: No. This is a reclassification within the balance sheet. Net income was never affected, so retained earnings is correct. Restate last year's balance sheet to show note receivable instead of accounts receivable. A disclosure note is needed, but it will state that net income and EPS were unaffected.
Q: Equipment costing $7 million was fully expensed in 2014 instead of being capitalised and depreciated over five years (straight-line, no residual value). The error is discovered in 2016. What is the correcting entry?
A: Debit Equipment $7 mil. Credit Accumulated Depreciation $2.8 mil (two years at $1.4 mil/year). Credit Retained Earnings $4.2 mil (the net understatement of income over 2014 and 2015). A disclosure note and prior-period adjustments to the retained earnings statement are also required.
Q: Ending inventory was understated by $1 million in 2014. The error is discovered in 2016. Is a correcting journal entry needed?
A: No. By 2016, the error has self-corrected through the COGS flow across 2014 and 2015. Retained earnings is now correct. However, the 2015 financial statements should still be retrospectively restated to show the correct COGS and retained earnings for that year.
Q: In the inventory example above, what was the effect on 2015 net income?
A: 2015 net income was overstated. The understated ending inventory in 2014 became the understated beginning inventory in 2015, which understated 2015 COGS, which overstated 2015 net income by the same $1 million.
Error corrections are the counterpart to accounting estimate changes (the first half of Chapter 20). The critical distinction: an estimate change reflects new information and is applied prospectively, while an error correction fixes something that was wrong from the start and is applied retrospectively. Exams will test whether you can tell these apart.
This topic also connects to depreciation methods (Chapter 11), inventory and COGS (Chapter 8), and the statement of retained earnings. The correcting entries in this section assume you are comfortable computing straight-line depreciation and tracing inventory through the COGS formula.
The concept of self-correcting errors ties into the matching principle and accrual accounting: timing differences between periods eventually wash out, but each period's statements must stand on their own.
Error correction, prior-period adjustment, retrospective restatement, self-correcting error, reclassification, disclosure note, correcting journal entry, prior-period error, restated financial statements, retained earnings adjustment, inventory error, COGS error, equipment capitalisation error, depreciation error, ACCTG 471, Intermediate Financial Accounting II, Chapter 20, Penn State, accounting changes and error corrections, balance sheet restatement, income statement restatement