# How a General Ledger Works With Double-Entry Accounting, With Examples

> **Definition**
>
> A general ledger stores and organizes the data that are itemized in a firm’s financial statements.

## What Is a General Ledger?

A general ledger represents the record-keeping system for a company’s financial data, with debit and credit account records validated by a trial balance. It provides a record of each financial transaction that takes place during the life of an operating company and holds account information that is needed to prepare the company’s financial statements. Transaction data is segregated by type into accounts for assets, liabilities, owners’ equity, revenues, and expenses.

### Key Takeaways

*   A general ledger is the foundation of a company’s double-entry accounting system.
*   General ledger accounts encompass transaction data needed to produce an income statement, balance sheet, and other financial reports.
*   General ledger transactions summarize transactions made as journal entries to sub-ledger accounts.
*   The trial balance is a report that lists every general ledger account and its balance, making adjustments easier to check and errors easier to locate.

  

![General Ledger](https://www.investopedia.com/thmb/pzv_W9-UIFVpQCcHH76ZKzTpawY=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/General-ledger-b821d06e18904b86b246c191d0adc447.jpg)

*— Investopedia / Eliana Rodgers*

## How a General Ledger Works

A general ledger is the foundation of a [system employed by accountants](https://www.investopedia.com/terms/a/accounting-manual.asp) to store and organize financial data used to create the firm’s financial statements. Transactions are posted to individual sub-ledger accounts as defined by the company’s [chart of accounts](https://www.investopedia.com/terms/c/chart-accounts.asp).

The transactions are then closed out or summarized in the general ledger, and the accountant generates a trial balance. This balance serves as [a report of each ledger account’s balance](https://www.investopedia.com/ask/answers/030915/how-do-you-calculate-credits-and-debits-general-ledger.asp). The trial balance is checked for errors and adjusted by posting additional necessary entries, and then the adjusted trial balance is used to generate the financial statements.

## How a General Ledger Functions With Double-Entry Accounting

A general ledger is used by businesses that employ the [double-entry](https://www.investopedia.com/terms/d/double-entry.asp) bookkeeping method, which means that each financial transaction affects at least two sub-ledger accounts, and each entry has at least one debit and one credit transaction. Double-entry transactions, called journal entries, are posted in two columns, with debit entries on the left and credit entries on the right, and the [total of all debit and credit entries](https://www.investopedia.com/terms/f/footings.asp) must balance.

The [accounting equation](https://www.investopedia.com/terms/a/accounting-equation.asp), which underlies double-entry accounting, is as follows:

> $\text{Assets} - \text{Liabilities} = \text{Stockholders' Equity}$

The [balance sheet](https://www.investopedia.com/terms/b/balancesheet.asp) follows this format and shows information at a detailed account level. For example, the balance sheet shows several asset accounts, including cash and accounts receivable, in its short-term assets section.

The double-entry accounting method works based on the accounting equation’s requirement that transactions posted to the accounts on the left of the equal sign in the formula must equal the total of transactions posted to the account (or accounts) on the right. Even if the equation is presented differently (such as Assets = Liabilities + Stockholders’ Equity), [the balancing rule always applies](https://www.investopedia.com/ask/answers/09/does-balance-sheet-always-balance.asp).

The table below is a simple example of what a double-entry general ledger may look like.  

## What Does a General Ledger Tell You?

The transaction details contained in the general ledger are compiled and summarized at various levels to produce a trial balance, [income statement](https://www.investopedia.com/terms/i/incomestatement.asp), balance sheet, [statement of cash flows](https://www.investopedia.com/financial-edge/1012/evaluating-a-statement-of-cash-flows.aspx), and other financial reports. This helps accountants, company management, analysts, investors, and other stakeholders assess the company’s performance on an ongoing basis.

Financial statement data often doesn’t tell the whole story When expenses spike in a given period or a company records other transactions that affect key financial [metrics](https://www.investopedia.com/terms/m/metrics.asp) (revenues, [net income](https://www.investopedia.com/terms/n/netincome.asp), etc.) That's why it becomes important to go back to the general ledger and dig into the details of each recorded transaction to locate the issue. At times, this can involve reviewing dozens of journal entries, but it is imperative to maintain reliably error-free and credible company financial statements.

> **Tip**
>
> Investors who want to make sure that a company's accounting and financial reporting is accurate should review supporting documents in addition to its financial statements along with any footnotes in these statements.

## A Balance Sheet Transaction Example

If a company receives payment from a client for a $200 invoice, the accountant increases the cash account with a $200 debit and completes the entry with a credit, or reduction, of $200 to [accounts receivable (AR).](https://www.investopedia.com/terms/a/accountsreceivable.asp) The posted debit and credit amounts are equal.

In this instance, one asset account (cash) is increased by $200, while another asset account (AR) is reduced by $200. The net result is that both the increase and the decrease only affect one side of the accounting equation. Thus, the equation remains in balance.

## An Income Statement Transaction Example

The income statement follows its own formula, which works as follows. When a company receives payment from a client for the sale of a product, the cash received is tabulated in [net sales](https://www.investopedia.com/terms/n/netsales.asp) along with the receipts from other sales and returns. The [cost of sales](https://www.investopedia.com/terms/c/cogs.asp) is subtracted from that sum to yield the [gross profit](https://www.investopedia.com/terms/g/grossprofit.asp) for that reporting period.

The income statement will also account for other expenses, such as [selling, general and administrative (SGA) expenses](https://www.investopedia.com/terms/s/sga.asp), depreciation, [interest](https://www.investopedia.com/terms/i/interest.asp), and [income taxes](https://www.investopedia.com/terms/i/incometax.asp). The difference between these inflows and outflows is the company's net income for the reporting period.

## What Is the Purpose of a General Ledger?

In accounting, a general ledger is used to [record a company’s ongoing transactions](https://www.investopedia.com/terms/s/suspenseaccount.asp). Within a general ledger, transactional data is organized into assets, liabilities, revenues, expenses, and owner’s equity. After each sub-ledger has been closed out, the accountant prepares the trial balance. This data from the trial balance is then used to create the company’s financial statements, such as its balance sheet, income statement, statement of cash flows, and other financial reports. 

## Is a General Ledger Part of the Double-Entry Bookkeeping Method?

Yes, a company that uses a double-entry bookkeeping method uses the general ledger method of storing company financial data. Specifically, double-entry bookkeeping is when each transaction impacts at least one debit and one credit transaction. In other words, each transaction appears in two columns, a debit column and a credit column, whose totals must balance. Under this balancing rule, the following equation applies:

*   Assets - Liabilities = Stockholders’ Equity.

## What Is an Example of a General Ledger Entry?

Consider the following example where a company receives a $1,000 payment from a client for its services. The accountant would then increase the asset column by $1,000 and subtract $1,000 from accounts receivable. The equation remains [in balance](https://www.investopedia.com/ask/answers/041515/why-reconciliation-important-accounting.asp), as the equivalent increase and decrease affect one side—the asset side—of the accounting equation. 

## The Bottom Line

A general ledger is an accounting tool that companies use to organize and maintain their financial records. It is the basis for corporate financial statements and ensures that financial reporting is done accurately and transparently. Companies can use their general ledgers to make better decisions about their finances while giving investors and analysts insight into their financial health and well-being.

> **Article Sources**
>
> 1.  The Open University. "[Introduction to Bookkeeping and Accounting: 3.6 The Accounting Equation and The Double-Entry Rules for Income and Expenses](https://www.open.edu/openlearn/money-business/introduction-bookkeeping-and-accounting/content-section-3.6)."