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Chart of accounts: how to design one your small business can actually use

Chart of accounts is the list of categories every transaction in your business gets sorted into. Every sale, purchase, payment, and receipt lands in one of its accounts — and your profit and loss statement and balance sheet are simply those accounts added up. If the categories are well designed, your reports answer questions in seconds. If they are not, every report needs untangling first.

Most small businesses do not need a complicated chart of accounts. They need a short, consistent one that matches how they actually run the business.

Chart of accounts: the five account types

Every account belongs to one of five types:

  • Assets — what the business owns or is owed: bank balances, money customers owe you (accounts receivable), stock, equipment, and vehicles.
  • Liabilities — what the business owes: supplier balances (accounts payable), loans, tax payable, and amounts received in advance from customers.
  • Equity — what the owner has put in, plus accumulated profits kept in the business, less any drawings.
  • Revenue (income) — what the business earns from selling goods or services.
  • Expenses — what the business spends to operate: rent, salaries, utilities, marketing, bank charges, and similar costs.

That five-way split is the backbone of double-entry bookkeeping. Each transaction touches at least two accounts, and the types keep the two sides of every entry in balance. A sale on credit, for example, increases revenue and increases accounts receivable. Paying rent decreases the bank balance and increases rent expense.

Chart of accounts: a simple numbering system that scales

Give every account a number as well as a name. Numbers make accounts easy to sort, group, and find, and they leave room to add accounts later without renumbering everything. A widely used convention for small businesses is:

  • 1000–1999 — Assets: 1100 Bank, 1200 Accounts receivable, 1300 Inventory, 1500 Equipment
  • 2000–2999 — Liabilities: 2100 Accounts payable, 2200 Loans payable, 2300 Tax payable
  • 3000–3999 — Equity: 3100 Owner's capital, 3200 Retained earnings, 3300 Drawings
  • 4000–4999 — Revenue: 4100 Sales — products, 4200 Sales — services
  • 5000–5999 — Expenses: 5100 Rent, 5200 Salaries, 5300 Utilities, 5400 Marketing, 5500 Bank charges

Leave gaps between numbers — 5110, 5120 rather than 511, 512 — so a new account can slot in later. Keep the numbering consistent across years: if rent was 5100 last year, it should still be 5100 this year, or comparing periods becomes painful.

Design rules that keep it clean

It earns its keep by making decisions visible. Four rules help:

  1. One account per decision. Create a separate account only when you want to see that number on its own in a report. If you compare product sales against service sales, they deserve separate accounts. If you never look at them separately, one sales account is enough.
  2. Mirror how you report. If your management report shows gross profit by product line, your revenue and cost-of-sales accounts should be split by the same lines. When the chart of accounts matches the report, the report almost writes itself.
  3. Do not over-split. A chart of accounts with 200 accounts for a five-person business is not thorough — it is unusable. Staff start guessing where things go, and the same expense lands in three different accounts across the year. Start small; add accounts when a real question needs one.
  4. Keep "miscellaneous" tiny. A Miscellaneous Expenses account is a warning sign, not a filing cabinet. If a fifth of your spending lands there, the account is hiding information. Review it every month, and promote any recurring item to its own account.

Two more habits pay off. Keep business and personal spending strictly separate — personal costs do not belong in the business chart of accounts at all. And use plain names: "Rent — office" beats "Overheads — premises (A)" because anyone reading the report understands it without a decoder ring.

A small example

For a small business selling products and services, a chart of accounts of about 25–35 accounts is usually plenty:

  • Assets: Bank, Petty cash, Accounts receivable, Inventory, Equipment, Accumulated depreciation
  • Liabilities: Accounts payable, Loans payable, Tax payable, Customer advances
  • Equity: Owner's capital, Retained earnings, Drawings
  • Revenue: Sales — products, Sales — services, Other income
  • Expenses: Cost of goods sold, Rent, Salaries, Utilities, Marketing, Software subscriptions, Professional fees, Bank charges, Miscellaneous

A purely service-based business can drop Inventory and Cost of goods sold. A shop can drop the services line. The right chart of accounts fits the business you actually run — not a template copied from a different industry.

How to review it once a quarter

It is not set in stone, but it should not churn either. Once a quarter, scan for accounts with no activity, accounts that always carry tiny balances, and any account where the same kind of transaction keeps landing under two names. Merge duplicates and rename unclear accounts — but do not delete an account that has history in it. Deleting breaks the trail back to past reports. In most accounting software you can archive or deactivate an unused account instead, keeping the history intact.

One last test: hand your profit and loss statement to someone who does not do your bookkeeping. If they can read it and understand where the money came from and where it went, your chart of accounts is doing its job.


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