What is Chart of Accounts?
The complete list of all accounts used by a business to categorize financial transactions in its general ledger, organized by account type.
Definition
The chart of accounts (COA) is the master index of every account a business uses in its accounting system. It provides the structural framework for recording all financial transactions — from invoicing clients and paying vendors to recording equipment purchases and tracking expenses. Each account in the chart is assigned a unique account number and name, and is classified into one of five primary categories: assets, liabilities, equity, revenue, and expenses. The chart of accounts is the foundation of double-entry bookkeeping, ensuring that every transaction is recorded consistently and can be tracked across financial statements.
Account Numbering System
A standard numbering system keeps the chart of accounts organized and scalable. A common structure uses four-digit numbers: 1000–1999 Assets (cash, bank accounts, accounts receivable, equipment, inventory, prepaid expenses); 2000–2999 Liabilities (accounts payable, credit cards, loans, accrued expenses); 3000–3999 Equity (owner's capital, common stock, retained earnings); 4000–4999 Revenue (service income, product sales, other income); 5000–5999 Expenses (rent, utilities, advertising, insurance, professional fees). Additional ranges can be added as needed, such as 6000–6999 for cost of goods sold in product-based businesses.
Creating a Chart of Accounts for a Small Business
When starting out, keep your chart of accounts simple and add accounts as needed rather than creating a complex structure prematurely. Start with the basics: a Cash account for your business checking account; an Accounts Receivable account for money owed by clients; an Accounts Payable account for money you owe vendors; an Owner's Equity or Capital account; a Revenue account for your primary service or product income; and key expense categories such as Office Supplies, Software & Subscriptions, Professional Services, and Advertising. As your business grows, you can add sub-accounts for greater detail, such as breaking Software & Subscriptions into individual accounts for each major tool.
Industry-Specific Accounts
Different industries add relevant accounts to their chart of accounts: Construction companies add accounts like "Contract Assets" (costs on uncompleted projects) and "Billings in Excess of Costs"; Restaurants add "Cost of Food," "Beverage Costs," and "Kitchen Equipment"; Real estate firms add "Property Management Fees," "Tenant Security Deposits," and "Mortgage Payable"; and Freelance creatives might add "Project Materials," "Licensing Fees," and "Royalty Income." The key is that your chart of accounts should reflect the economic reality of your specific business.
Maintaining Your Chart of Accounts
A chart of accounts is not a set-it-and-forget-it document. Review it at least annually to ensure it still reflects your business: add new accounts when you begin operating in new areas; deactivate accounts that are no longer used (never delete historical accounts); ensure account names are descriptive and consistent; align your accounts with your tax return (Schedule C categories for sole proprietors); and coordinate with your accountant to make sure your structure supports clean financial reporting. Most accounting software allows you to customize your chart of accounts to fit your needs.