A business records thousands of transactions a year. The chart of accounts decides what each one can be recorded as. Before any entry is made, the chart has already fixed which accounts exist, what type each one carries, and how they roll up into the reports. Everything that comes later, from the monthly income statement to the question a lender asks, is a view of that list.
That makes the chart the schema of the business rather than a filing convention. A cost that has no account of its own lands inside a bigger number and cannot be pulled back out. A question that needs a line the chart does not carry cannot be answered from the books, no matter how carefully the bookkeeping was done. This site treats that as the central claim about charts of accounts, and the ten pages below explain the concepts that claim rests on.
Every page on this site sits on the same four-stage model, shown above. Structure asks which accounts exist and how they are typed, numbered, and nested. Recording asks how a transaction resolves to those accounts. Reporting asks how the accounts roll up into the income statement and balance sheet. Insight asks which questions the books can now answer, and which ones they cannot. A foundation page walks one concept through all four stages. An industry guide walks one industry through them. The strip at the top of each page shows where that page sits.
The ten concepts
Each concept has one page. That page carries the definition, the entries, and the statement lines, and no other page on the site repeats them. Industry guides link here instead of re-explaining.
| Code | Concept | What it settles |
|---|---|---|
| F-01 | The five account types | Which of the five types each account carries, and why the type decides which statement it lands on |
| F-02 | Account numbering | How number ranges keep the chart in statement order and leave room to grow |
| F-03 | Debits and credits | Which side increases which type, and why every entry balances |
| F-04 | Cost of goods sold vs. operating expense | Which costs belong above the gross margin line and which belong below it |
| F-05 | Accrual vs. cash basis | Whether an event is recorded when it happens or when cash moves, and what each choice hides |
| F-06 | Fixed assets and depreciation | When a purchase becomes an asset instead of an expense, and how its cost reaches the income statement over time |
| F-07 | Liabilities and accruals | How a cost the business owes but has not paid gets onto the books in the right period |
| F-08 | Parent and sub-accounts | How one chart reports at two levels of detail, when to split an account, and when to stop |
| F-09 | How accounts become statements | The path from a list of balances to the income statement, balance sheet, and cash flow |
| F-10 | GAAP basics for a small business chart | The four principles that shape the chart: matching, consistency, materiality, and classification |
The order is the order a chart gets built. Types come first, because nothing else works until each account has one. Numbering and hierarchy give the list its shape. The middle concepts govern how transactions land. The last two explain what the reports do with the result and which standards the whole thing answers to.
Industry guides built on this foundation
A foundation page explains a concept for every business. An industry guide takes the concepts and shows what they look like for one kind of business: the accounts it needs that a generic chart lacks, the entries that move cost through them, the statement lines those entries create, and the questions the business can answer once they exist. Each industry guide names the foundation concepts it depends on and links back here rather than restating them. There is one guide per template, and the manufacturing guide is the reference the others follow.
- Principles of Accounting, Volume 1: Financial Accounting · OpenStax, Rice University
Read the concept you came for, then open the industry guide for your business and compare its accounts with yours. The demo scores your own chart against the same structure.
Frequently asked questions.
What is a chart of accounts?
The complete list of accounts a business records transactions in, each with a type, a number, and a name. Every report the business produces is a view of that list.
How many accounts should I have?
Enough to answer the questions you ask every month, and no more. Most small businesses land between forty and one hundred. Each extra account is one more place a transaction can be coded wrongly.
Can I change my chart of accounts later?
Yes. Adding accounts is safe at any time. Merging or retyping accounts changes how past periods read, so plan those changes for a period end and keep a note of what moved.
The principles are easy. Applying them is the work.
This guide is the theory. The free demo helps you review a real QuickBooks Online chart with a score, structural diff, and prioritized cleanup plan.
- +Score the chart across the health dimensions
- +Compare structure against a reference pattern
- +Prioritize cleanup work before changing books
- +Review recommendations before anything is applied