How Do I Set Up a Chart of Accounts for My Small Business?

By Bill Stilwell · Last reviewed October 17, 2026

The short answer

A chart of accounts is the list of categories your books sort every dollar into. Set up accounts for income, expenses, assets, liabilities, and equity, plus clear spots for payroll, taxes, and owner money. Keep it short enough that you use it the same way every time, and match the expense names to the lines on your tax return.

What this means

Every transaction in your books lands in one account. The accounts fall into five groups:

Income. Money you earn, like service revenue or product sales.
Expenses. Money you spend to run the business, like fuel, software, and advertising.
Assets. Things the business owns, like cash in the bank, equipment, and money customers owe you.
Liabilities. What the business owes, like credit card balances, loans, and sales tax you collected but haven’t paid yet.
Equity. The owners’ stake, including money owners put in and take out.

The Internal Revenue Service (IRS) doesn’t require any one system. It says any system works if it clearly shows your income and expenses. A chart of accounts is how most bookkeeping software does that.

Made-up example: Cedar Ridge Lawn Care sets up income accounts for “Mowing,” “Cleanups,” and “Irrigation.” Expense accounts include “Fuel,” “Equipment repairs,” “Dump fees,” and “Advertising.” It adds liability accounts for “Sales tax payable” and “Payroll taxes payable,” and equity accounts for “Owner contributions” and “Owner draws.” At tax time, the totals line up with the return without a pile of guesswork.

Why it matters

Messy categories hide problems. If everything lands in “Miscellaneous,” you can’t tell which costs are growing.
Tax prep gets slow and expensive. Your tax pro has to re-sort your year.
Owner money gets mixed in. If draws are recorded as expenses, your profit looks smaller than it is, and your tax return can be wrong.
Reports stop making sense. Your profit and loss report and balance sheet are only as good as the accounts behind them (see 10.5.8 Financial Reports).

Who this applies to

Every business that keeps books, including sole proprietors with one bank account. If you use bookkeeping software, it likely starts you with a default list. You still need to review and trim it.

How to do it

Start from your software’s default list for your business type, if it offers one.
Ask your tax pro which return you file (see 10.1.2 Federal Tax Classification). Name your main expense accounts so they roll up to that form’s lines. That way your totals map straight onto the return.
Split income by how you sell. Use a small number of income accounts, split the way you’d want to see results, like by service line.
Add liability accounts for money you’re holding for others, such as sales tax collected and payroll taxes withheld. That money isn’t yours to spend.
Add equity accounts for owner activity: contributions in, draws out (see 10.6.6 Owner Draws).
Add a payroll expense account for wages and employer taxes if you have or plan to have employees.
Delete or hide accounts you’ll never use. Fewer choices means fewer wrong choices.
Write a one-page guide that says what goes in each account. Share it with anyone who records transactions.
Review the list once a year. Merge accounts nobody uses and add ones you keep needing.

What proof to keep

An export of your chart of accounts, dated
Your one-page account guide
Notes on any changes made during the year and why

Keep these in your bookkeeping folder with your year-end reports.

Common mistakes

Too many accounts. A long list of near-duplicate expense accounts leads to random choices.
A big “Miscellaneous” or “Ask my accountant” account that never gets cleaned up.
Recording owner draws as an expense. Draws aren’t a business cost.
Recording the full loan payment as an expense. Usually only the interest is an expense, and the principal lowers the loan balance. Ask your tax pro.
Putting sales tax collected into income. It belongs in a liability account until you pay it.
Renaming accounts in the middle of the year without telling your bookkeeper, which breaks comparisons.

When to get help from a pro

A certified public accountant (CPA) or bookkeeper can set up your chart and save you cleanup later (see 6.3.3 Bookkeeper). Questions to ask:

Which tax form lines should my expense accounts match?
How should I record owner contributions and draws for my business structure?
Which accounts do I need for sales tax and payroll?

Bill’s note

[Bill: add a short note. For example, how you chose the income accounts for SiteSmarty, such as splitting Google Business Profile management from website work, and what that showed you about which service makes more money.]

How I did this for SiteSmarty

[Date I did this:]
[What I actually did, step by step: which software I used, which default list I started from, and what I added or removed]
[What it cost and how long it took:]
[What surprised me or what I’d do differently:]
[Screenshot or photo to add, with private info blurred: the SiteSmarty chart of accounts list with balances hidden]
[Result so far:]

Questions people ask

How many accounts should a small business have? Enough to see where money comes from and goes, and few enough that you pick the same one every time. Your bookkeeper or CPA can help you trim the list.

Does the IRS require a certain chart of accounts? No. The IRS says you can use any system that clearly shows your income and expenses.

Where do owner draws go? In an equity account, not an expense account.

Can I change my chart of accounts later? Yes. Make changes at the start of a year when you can, and write down what changed so reports still compare.

Audit check

Question: Does the business have a short, written chart of accounts that separates income, expenses, assets, liabilities, equity, payroll, taxes, and owner activity?
Pass looks like: A trimmed account list. Sales tax and payroll taxes in liability accounts. Owner contributions and draws in equity. A one-page guide that says what goes where.
Fail looks like: A large “Miscellaneous” balance. Draws recorded as expenses. Sales tax counted as income. Dozens of unused accounts.
Evidence to collect: Dated export of the chart of accounts, the account guide, and a recent profit and loss report.

Where this fits

Do this first: 10.1.4 Accounting Method, 10.4.6 Account Ownership

Do this next: 10.5.2 Transaction Recording

Sources

IRS, "What kind of records should I keep" (checked October 17, 2026)
IRS, Publication 583, "Starting a Business and Keeping Records" (checked October 17, 2026)
Small Business Administration, "Manage your finances" (checked October 17, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.