Most business transactions aren't simple exchanges of one thing for another. Often, a single event involves multiple moving parts. When this happens, we need a way to record everything at once while keeping our books balanced. This is where compound journal entries come in.

A compound journal entry is simply an entry that affects more than two accounts. It might have multiple debits, multiple credits, or a combination of both. The key rule remains the same: total debits must always equal total credits.

A simple entry wouldn't capture all this. We need to show that the company gained an asset (the truck), gave up some cash, and took on a new liability (the loan). A compound entry handles this perfectly.

Here, one debit of $50,000 balances against two credits totaling $50,000. The entire transaction is recorded neatly in a single entry, giving a complete picture of the event.

Business doesn't stop neatly at the end of the month. We earn revenue and incur expenses continuously. Adjusting entries are made at the end of an accounting period to make sure our financial statements reflect what actually happened during that period, not just when cash changed hands.

These entries ensure we follow the matching principle, which states that expenses should be recognized in the same period as the revenues they helped generate. Adjusting entries typically fall into two categories: accruals and deferrals.

An accrued expense is a cost a company has incurred but hasn't paid yet. A common example is employee salaries. Let's say the month ends on a Wednesday, but payday isn't until Friday. The company owes its employees for three days of work. An adjusting entry records this.

A deferred revenue, or unearned revenue, happens when a company receives cash before it provides a service. For instance, if a client pays $1,200 on January 1st for a full year of consulting, the company can't claim all that revenue at once. At the end of January, it has only earned one month's worth.

This entry reduces the liability (Unearned Revenue) and increases the revenue, accurately reflecting that $100 was earned in January.

After making adjusting entries, some accountants use reversing entries. These are optional entries made on the very first day of the new accounting period that do exactly what the name implies: they reverse a specific adjusting entry from the period before.

Why bother? Reversing entries simplify the bookkeeping process. They are typically used for accrued expenses and accrued revenues. Let’s revisit our accrued salaries example.

At the end of January, we debited Salaries Expense for $6,000 and credited Salaries Payable for $6,000. Without a reversing entry, when the full weekly payroll of $10,000 is paid on Friday, February 2nd, the bookkeeper would have to make a compound entry: debiting Salaries Payable for $6,000, debiting Salaries Expense for $4,000, and crediting Cash for $10,000. It's a bit complex.

A reversing entry on February 1st simplifies this.

This zeros out the Salaries Payable account and puts a temporary credit balance in Salaries Expense. Now, when the $10,000 payroll is paid on Friday, the bookkeeper can make a standard, simple entry: debit Salaries Expense for $10,000 and credit Cash for $10,000. The net effect on the Salaries Expense account for February will be a $4,000 debit ($10,000 debit - $6,000 credit), which is the correct amount for the work done in February.

Many large corporations are made up of a parent company and several subsidiaries. These related companies often do business with each other, leading to intercompany transactions. These might include one subsidiary selling goods to another, or the parent company loaning money to a subsidiary.

Recording these transactions requires care. Each company must record the transaction on its own books. For example, if Parent Corp lends Subsidiary Inc $100,000, the entries would be:

The tricky part comes when the parent company prepares consolidated financial statements, which combine the results of all its subsidiaries into one report. From the perspective of the consolidated entity, the company can't owe money to itself. The loan is an internal transfer, not a transaction with an outside party.

Therefore, during the consolidation process, these intercompany transactions must be eliminated. The Note Receivable on the parent's books and the Note Payable on the subsidiary's books cancel each other out. This ensures the consolidated financial statements don't overstate assets and liabilities, presenting a true picture of the corporation's financial health to the outside world.

Mastering these advanced entries allows for a more nuanced and accurate financial picture, ensuring that records are not only balanced but also truly representative of a company's operations.