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How to Set Up a Chart of Accounts

Start with a standard small-business template (assets, liabilities, equity, revenue, cost of goods sold, operating expenses), add sub-accounts only where you genuinely need to track separately, use consistent numbering, and map each account to its tax-return line now. The goal is a short list that grows only when reality demands it — not a 200-account chart on day one.

Your chart of accounts is the backbone of every financial report you will ever produce. Get it right and reporting, VAT filing, and tax prep become routine; get it wrong and you spend the year reclassifying transactions and explaining a balance sheet nobody understands. The single most common mistake is building a chart for the business you wish you were — with 15 revenue streams and 40 expense categories — instead of the business you actually run today. Start small, expand deliberately.

Before you start

A list of your main income sources and expense types, your tax return form (so you can map accounts to lines), and a standard small-business chart of accounts template (most accounting software ships with one).

Steps

  1. 1

    Start with a standard template, not a blank page

    Every accounting software — QuickBooks, Xero, the open-source options — ships with a small-business chart of accounts template. Use it as your starting point, not a suggestion to ignore. These templates are built around what 95% of small businesses actually need. Customize from there, but resist the urge to start from scratch.

    💡 If your template has 80 accounts and you only recognize 20, delete the ones you do not use. Empty accounts are noise.

  2. 2

    Keep the five main sections in this order

    Every chart of accounts has the same five sections, in this order: Assets (what you own), Liabilities (what you owe), Equity (what is left), Revenue (what you earn), and Expenses (what you spend to earn it). Within expenses, separate Cost of Goods Sold (direct costs of delivering your product or service) from Operating Expenses (overhead like rent, software, admin). This separation is what makes your gross margin visible.

  3. 3

    Use a consistent numbering scheme

    Number your accounts so the section is obvious from the number: 1000s for assets, 2000s for liabilities, 3000s for equity, 4000s for revenue, 5000s for cost of goods sold, 6000–8000s for operating expenses. Leave gaps (1010, 1020, 1030) so you can insert new accounts without renumbering everything later.

    💡 Sub-accounts inherit the parent number: 6010 Software, 6011 SaaS subscriptions, 6012 Software licenses. This keeps related accounts together on reports.

  4. 4

    Add sub-accounts only where tracking changes a decision

    A sub-account earns its place when you would make a different decision based on the split. "Travel — flights vs hotels" matters if you are watching travel costs; "Office supplies — pens vs paper" does not. Ask: would I ever look at this number separately and act on it? If no, one account is enough.

  5. 5

    Map every account to a tax-return line now

    Take your tax return and write the account number next to each line. This mapping is what turns your books into a tax return in an afternoon instead of a week-long reconstruction. Do it when you set up the chart — not in January when the return is due and you have forgotten what "6240 — Contract Services" was supposed to mean.

    💡 If an account does not map to any tax line, either it is a balance-sheet account (fine) or you created an account you do not need (cut it).

  6. 6

    Review annually and prune dead accounts

    Once a year, look at every account with zero transactions in the last 12 months. Either you stopped using it (deactivate it) or it was never used (delete it). A chart of accounts that only grows becomes a chart nobody trusts — and every new account is a new place to misclassify a transaction.

Common mistakes

  • Building a 200-account chart on day one for a business that needs 30. You spend the year ignoring half of them.
  • Mixing personal and business accounts in the same chart. Keep personal out entirely — it corrupts every report.
  • Not separating cost of goods sold from operating expenses, so you cannot see your gross margin.
  • Creating accounts without mapping them to tax lines, then reconstructing the mapping under deadline pressure.
  • Numbering accounts randomly (e.g. 1000, 1047, 1099) so nothing sorts logically on reports.

Verdict

A good chart of accounts starts minimal, uses consistent numbering, separates direct costs from overhead, and maps to your tax return from day one. Add accounts only when a decision depends on the split. Nika works within whatever chart you set up — she learns your numbering and files invoices to the right account from {price} per completed invoice.

Questions

How many accounts should a small business chart of accounts have?

Typically 30–60 total across all five sections. A consulting business might run on 25; a product business with inventory needs more. The number is not the point — usability is. If you cannot explain what each account is for in one sentence, prune.

Should I set up my chart of accounts before or after choosing accounting software?

After, because most software ships with a usable template you can customize. Pick software first, accept its default chart, then delete what you do not use and add what is missing. Starting the chart before choosing software usually means redoing it.

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