3.6 Prepare a Trial Balance

Trial Balance Preparation and Analysis

Construction of an Unadjusted Trial Balance

The trial balance is a worksheet that lists every general ledger account alongside its balance at a specific point in time. Its purpose is straightforward: confirm that total debits equal total credits before you move on to financial statements. If the totals don't match, something went wrong during journalizing or posting.

Here's how to build one:

1. Gather all accounts from the general ledger. Every account needs to appear: assets, liabilities, equity, revenues, and expenses. The chart of accounts is your checklist here.
2. List accounts in standard order. Start with assets, then liabilities, then equity, then revenues, then expenses. Within each category, order by liquidity (most liquid first, so cash comes before equipment) or permanence.
3. Enter each account's balance in the correct column. Accounts with normal debit balances (assets like equipment, expenses like rent) go in the debit column. Accounts with normal credit balances (liabilities like accounts payable, equity like common stock, revenues like sales) go in the credit column.
4. Total the debit and credit columns independently.
5. Compare the two totals. If total debits equal total credits, the trial balance is "in balance." If they don't match, an error exists and you need to find it before proceeding.

Each balance you transfer should reflect the cumulative effect of all posted transactions for that account. Double-check that you're pulling the correct ending balance from each ledger account, not just the most recent entry.

Correction of Trial Balance Errors

When your trial balance doesn't balance, the difference itself can point you toward the type of mistake.

• Transposition errors happen when two digits get switched. For example, recording $1,234 as $1,324. The resulting difference in your trial balance will always be divisible by 9. So if your columns are off by $90, $180, or $270, check for swapped digits.
• Slide errors occur when a decimal point shifts. Recording $1,234 as $12.34 is a slide. Like transpositions, slides also produce differences divisible by 9.
• Omission errors happen when a transaction is never recorded at all, or only partially recorded (you debited one account but forgot the credit). A complete omission won't cause the trial balance to be out of balance, which is why it's so easy to miss.
• Errors of principle occur when the correct amount is recorded but to the wrong type of account. Debiting rent expense instead of utilities expense, for instance. The trial balance still balances because debits and credits are equal, but the individual account balances are wrong.

To correct an error:

1. Review journal entries and ledger postings to locate the mistake.
2. Prepare a correcting entry that reverses the incorrect portion and records the correct one.
3. Post the correcting entry and re-verify that the trial balance is in balance.

Significance in the Accounting Cycle

The trial balance sits at a specific point in the accounting cycle: after journal entries have been posted to the general ledger, but before adjusting entries and financial statements are prepared.

It serves several functions:

• Accuracy check. It catches computational and posting errors that would otherwise carry forward into financial statements.
• Starting point for adjustments. The unadjusted trial balance is the foundation for preparing adjusting entries (accruals and deferrals). Once those adjustments are posted, you'd prepare an adjusted trial balance before building the income statement and balance sheet.
• Quick snapshot. It gives you a summary of every account balance at a given date (such as month-end) without having to flip through the entire ledger.

The trial balance has real limitations, though. It won't catch omission errors or errors of principle, since both can leave debits and credits equal. It also doesn't verify that transactions follow GAAP, such as proper revenue recognition or matching. A balanced trial balance means your mechanics are correct, not necessarily your accounting judgments.

Trial Balance Components and Structure

The chart of accounts provides the organizational framework. It determines which accounts exist, how they're numbered, and the order they appear on the trial balance.

Each account's balance on the trial balance reflects the net result of all debits and credits posted to that account during the period. The trial balance has two columns (debit and credit), and every account appears in exactly one column based on its normal balance. Assets and expenses sit in the debit column; liabilities, equity, and revenues sit in the credit column.