Foundations of Double-Entry Accounting: GL Posting, Trial Balances, and Transaction Analysis

GL posting, trial balances, and adjusting/closing entries

• Posting to the General Ledger (GL): update the individual accounts for every debit and credit from the journal entries.

• After posting, prepare an unadjusted trial balance to verify that debits equal credits before adjustments.

• Adjusting entries capture information not reflected by source documents (nontransactions), such as depreciation.

• After adjusting entries, prepare an adjusted trial balance used to generate the financial statements.

• Once financial statements are prepared, perform closing entries to close non-balance-sheet (temporary) accounts and reset them to zero for the next accounting period.

The accounting equation and the double-entry foundation

• The basic accounting equation: $\text{Assets} = \text{Liabilities} + \text{Shareholders' Equity}$

• At any point in time, assets have claims from two sources: creditors (liabilities) and owners (shareholders' equity).

• Shareholders' equity is made up of two components: $\text{Share Capital}$ and $\text{Retained Earnings}$.

• Changes in retained earnings arise from period activity: net income (profit) and distributions to owners (dividends).

• Net income is the difference between revenues and expenses: $\text{Net Income} = \text{Revenues} - \text{Expenses}$.

• Revenues increase retained earnings (and hence equity); expenses decrease retained earnings; dividends reduce retained earnings (and equity).

• Every transaction affects one or more elements of the accounting equation; a transaction may involve increases in one asset and decreases in another asset, and it still must balance in the equation.

• The double-entry system is derived from the accounting equation, with the left side as the Debit (Dr) and the right side as the Credit (Cr).

• Debits and credits themselves have no intrinsic meaning; their effect depends on the account type and the normal balance:

  • Normal balances: $\text{Assets (Dr)} , \ \text{Liabilities (Cr)} , \ \text{Shareholders' Equity (Cr)} , \ \text{Revenues (Cr)} , \ \text{Expenses (Dr)} , \ \text{Dividends (Dr)}.$

• A transaction that increases the right side (liabilities or equity) must be recorded with a credit; increases to the left side (assets) require a debit. Conversely, decreases in assets use credits, and increases in expenses/dividends use debits.

• Example of a gain: gains increase profit, thus increase equity; gains are recorded with a credit to the gain/revenue-like account (not with a debit).

• When in doubt, go back to the accounting equation to determine which side increases or decreases, then translate to the appropriate journal entry (Dr vs Cr).

• The accounting equation must always balance; if it does not, the transaction recording is incorrect.

Analyzing transactions, source documents, journals, and the GL

• Transactions begin with source documents (e.g., supplier invoices) that trigger recording of a transaction.

• In some courses, you trace transactions from source documents to journals and then to the GL and the financial statements.

• A transaction is an economic exchange that affects at least one asset, liability, or shareholders' equity.

• If a transaction does not affect any of the accounting equation components, it is not recorded as a transaction.

• Transactions are assessed using the basic accounting equation to determine what accounts are affected and which side increases or decreases.

• On-account transactions and the use of accounts receivable/payable:

  • If you perform services on account, you increase Accounts Receivable (asset) and increase Revenue (equity).

  • If you pay a liability or expense, you decrease Cash (asset) and decrease equity via the expense (or increase expense, which reduces net income and retained earnings).

• When a transaction is recorded with the phrase "on account," the effect is typically an asset increase (e.g., Accounts Receivable) and an increase in revenue (credit).

• The phrase "no receivable" or "no payable" is used only when there is no note or formal payable; otherwise, use appropriate accounts (e.g., Accounts Receivable, Accounts Payable, Notes Receivable, Notes Payable).

Journal entries: format, examples, and mappings to T-accounts

• Journal entries are chronological records of transactions with a date, a brief description, and the accounts affected (with amounts arranged as Debits on the left and Credits on the right).

• Do not invent nonstandard formats (avoid random +/− or ambiguous symbols); use a clear description and standard account names.

• Journal entries can be translated to T-accounts for posting and balancing the GL.

• Example mappings and transactions (from the transcript):

  • Purchase of equipment on account for $8{,}000:

  • Debit Equipment: $8{,}000$

  • Credit Accounts Payable: $8{,}000$

  • Service provided on account for $3{,}800 (revenue earned, not yet cash):

  • Debit Accounts Receivable: $3{,}800$

  • Credit Service Revenue: $3{,}800$

  • Utilities expense paid in cash ($300):

  • Debit Utilities Expense: $300$

  • Credit Cash: $300$

  • Borrow $20{,}000 from the bank (cash received, liability incurred):

  • Debit Cash: $20{,}000$

  • Credit Bank Loan Payable: $20{,}000$

  • Pay supplier for equipment purchase (settle Accounts Payable from the first entry) $8{,}000$:

  • Debit Accounts Payable: $8{,}000$

  • Credit Cash: $8{,}000$

  • Collected $3{,}000$ from a customer (previously recorded as Accounts Receivable):

  • Debit Cash: $3{,}000$

  • Credit Accounts Receivable: $3{,}000$

  • Dividends declared and paid $500$:

  • Debit Dividends: $500$

  • Credit Cash: $500$

• Totals: in a properly balanced set of journal entries, total debits = total credits (example given: $\text{Total Debits} = \text{Total Credits} = 45{,}950$ in the transcript).

• The posting process converts journal entries into updates to the GL, either directly or via T-accounts for a simplified view.

End-of-period steps and the role of depreciation as a nontransaction adjustment

• Depreciation is an example of an adjustment that does not result from a new transaction, but is required to reflect the consumption of asset value over time.

• Depreciation is recorded as an adjusting entry (e.g., Debit Depreciation Expense, Credit Accumulated Depreciation) and affects the income statement and the balance sheet through retained earnings and accumulated depreciation, respectively.

• The asset's cost remains the same on the balance sheet, but accumulated depreciation reduces the asset's net book value.

• This is separate from the initial transaction of purchasing the asset; depreciation is a periodic adjustment to recognize expense over the asset’s useful life.

End-of-period steps: unadjusted vs adjusted trial balances, and closing entries

• Unadjusted trial balance: prepared after posting all journal entries but before adjusting entries; used to identify necessary adjustments.

• Adjusted trial balance: prepared after posting adjusting entries; used to prepare the financial statements.

• Closing entries: transfer the balances of temporary accounts (revenues, expenses, and dividends) to Retained Earnings, resetting these accounts to zero for the next period.

• The permanent accounts (assets, liabilities, and equity) carry their balances forward to the next period.

Quick reference: key concepts in a compact form

• Fundamental equation: $\text{Assets} = \text{Liabilities} + \text{Shareholders' Equity}$

• Net income: $\text{Net Income} = \text{Revenues} - \text{Expenses}$

• Change in Retained Earnings: $\Delta \text{RE} = \text{Net Income} - \text{Dividends}$

• Normal balances:

  • Assets: Debit side (Dr)

  • Liabilities: Credit side (Cr)

  • Shareholders' Equity: Credit side (Cr)

  • Revenues: Credit side (Cr)

  • Expenses: Debit side (Dr)

  • Dividends: Debit side (Dr)

• Journal entry format essentials:

  • Include date, a brief description, accounts debited and credited, and amounts with the left column for Debits and the right column for Credits.

• Journal entries to T-accounts: used to post and verify the GL balances; ensure debits = credits overall.

• Example general guidance: a transaction that increases an asset is recorded as a Debit; a transaction that increases a liability or equity is recorded as a Credit.

• Note on terminology: Debits = Dr; Credits = Cr; the left side corresponds to the Debit column and the right side corresponds to the Credit column.

Quick practice prompts (based on examples in the transcript)

• If you perform services on account for $3{,}800$, what is the journal entry?

  • Debit Accounts Receivable $3{,}800$; Credit Service Revenue $3{,}800$.

• If you pay utilities cash $300$, what is the journal entry?

  • Debit Utilities Expense $300$; Credit Cash $300$.

• If you borrow $20{,}000$ from the bank, what is the journal entry?

  • Debit Cash $20{,}000$; Credit Bank Loan Payable $20{,}000$.

• If you pay the supplier for equipment purchased on account, $8{,}000$, what is the journal entry?

  • Debit Accounts Payable $8{,}000$; Credit Cash $8{,}000$.

• If you collect $3{,}000$ from a customer who previously owed you (Accounts Receivable), what is the journal entry?

  • Debit Cash $3{,}000$; Credit Accounts Receivable $3{,}000$.

• If dividends of $500$ are paid, what is the journal entry?

  • Debit Dividends $500$; Credit Cash $500$.