Sub accounts let you track different types of payables separately within one main account

A sub account (or subaccount) in QuickBooks Online is a smaller account that sits underneath a main account in your chart of accounts. When you create a sub account for Accounts Payable, you're dividing your payables into categories — like vendor types, departments, or payment methods — while keeping everything connected to one parent AP account. This structure lets you see the total you owe in one place, but also drill down to see exactly how much you owe to specific vendors or for specific purposes.

The main reason to use sub accounts is organization and reporting. If you pay multiple vendors regularly, or if different departments track their own expenses, sub accounts show you the breakdown without cluttering your main chart of accounts. QuickBooks rolls up all the sub account balances into the parent account automatically, so your balance sheet stays clean.

Key Takeaways

  • Sub accounts for AP sit under a parent Accounts Payable account and let you separate payables by vendor, department, or category while keeping one total balance.
  • You create sub accounts in the Chart of Accounts section by selecting an existing AP account as the parent, then marking the new account as a sub account.
  • QuickBooks automatically rolls up all sub account balances into the parent account, so your balance sheet shows only the parent total.
  • You can assign bills and payments to specific sub accounts when you enter them, and reports will show the breakdown by sub account if you need it.

Where to find the Chart of Accounts in QuickBooks Online

Open QuickBooks Online and click the Accounting menu on the left sidebar. From there, select Chart of Accounts. You'll see a list of all your accounts organized by type — Assets, Liabilities, Equity, Income, and Expenses. Your Accounts Payable account will be in the Liabilities section. This is where you'll add your sub accounts.

If you don't already have an Accounts Payable account, you'll need to create one first before you can add sub accounts to it. Most QuickBooks Online companies come with a default AP account already set up, but if yours doesn't, you can create one by clicking New at the top of the Chart of Accounts page, selecting Account, choosing Liability as the account type, and naming it "Accounts Payable."

Steps to create a sub account for AP

In the Chart of Accounts, find your main Accounts Payable account and click on it. A detail panel will open on the right side of the screen. Click the Edit button (pencil icon) to open the account settings. Scroll down until you see the option that says Is sub account — this is a checkbox. Do not check this box yet; you're looking at the parent account, which should never be marked as a sub account itself.

Instead, go back to the Chart of Accounts list and click the New button at the top. Select Account from the dropdown. Choose Liability as the account type (since AP is a liability). Give your sub account a clear name — for example, "Accounts Payable - Vendor A" or "Accounts Payable - Office Supplies." Now scroll down and check the box labeled Is sub account. A dropdown menu will appear asking you to select the parent account. Choose your main Accounts Payable account from the list. Click Save and Close.

Repeat this process for each sub account you need. You can create as many sub accounts under one parent AP account as your business requires. Each one will appear indented under the parent account in your Chart of Accounts, showing the hierarchy clearly.

How to assign bills to the correct sub account

When you enter a bill in QuickBooks Online, the account field is where you tell the system which sub account to use. Click + New at the top left, select Bill, and fill in the vendor name and bill details. In the Category details section at the bottom, you'll see a column labeled Account. Click that field and select the specific AP sub account where this bill should be recorded.

If you always pay a certain vendor from the same sub account, you can set up a default. Go to the vendor's record (click Expenses in the left menu, then Vendors, then click the vendor's name), and in the Tax ID section you'll see an Account field. Set the default AP sub account there, and QuickBooks will automatically fill it in when you create a bill for that vendor. You can still change it on individual bills if needed.

Viewing reports by sub account

To see how much you owe in each sub account, run an Accounts Payable Aging report. Click Reports in the left menu, search for "Accounts Payable Aging," and open it. By default, this report groups payables by vendor, but you can customize it to show sub accounts instead. Click the Customize button, then look for a Group by option and change it from "Vendor" to "Account." The report will now show your total payable broken down by each AP sub account.

You can also run a Balance Sheet report to see the parent AP account total. The balance sheet will show only the parent account balance (the sum of all sub accounts), which is what goes on your official financial statements. If you need to see the sub account breakdown for internal tracking, the Accounts Payable Aging report is the clearest view.

Common mistakes when setting up AP sub accounts

The most common mistake is marking the parent AP account as a sub account by accident. Remember: the parent account should never have the "Is sub account" checkbox marked. Only the accounts underneath it should be marked as sub accounts. If you make this mistake, go back and edit the parent account to uncheck that box.

Another mistake is creating too many sub accounts and losing track of which bills go where. Start with three to five sub accounts based on how you actually track payables — by vendor type, by department, or by expense category. You can always add more later if you need them. Too many sub accounts make reports harder to read and don't add much value.

A third issue is forgetting to assign bills to sub accounts after you set them up. If you create sub accounts but keep assigning all bills to the parent account, you won't see any breakdown in your reports. Make it a habit to select the correct sub account every time you enter a bill, or set up vendor defaults so it happens automatically.

When to use sub accounts versus classes or cost centers

QuickBooks Online also offers Classes and Cost Centers (in some versions) as ways to organize and track expenses. The difference is that sub accounts are part of your chart of accounts and appear on your balance sheet, while Classes and Cost Centers are optional tracking tools that don't change your financial statements. Use sub accounts when you need the breakdown to show up on your official reports. Use Classes or Cost Centers when you want to track expenses for internal reporting only.

For Accounts Payable specifically, sub accounts are usually the right choice because you want to know exactly how much you owe in each category. If you're tracking which department a bill belongs to for cost allocation, you might use both — a sub account for the type of payable and a Class for the department. QuickBooks lets you use both at the same time.

Frequently Asked Questions

Can I delete a sub account after I've created it?

You can delete a sub account only if it has a zero balance. If the sub account has transactions or a balance, QuickBooks will not let you delete it. You can make it inactive instead by editing the account and checking the "Inactive" box. Inactive accounts don't appear in dropdown lists but stay in your records for historical purposes.

What happens if I assign a bill to the wrong sub account?

You can edit the bill and change the sub account. Open the bill, click Edit, change the Account field in the Category details section, and save. The balance will move from the old sub account to the new one automatically. Your reports will reflect the change the next time you run them.

Do sub accounts affect how I pay bills?

No. When you pay a bill in QuickBooks, the payment goes to the vendor regardless of which AP sub account the bill was assigned to. Sub accounts are only for tracking and reporting. The payment process works the same way whether you use sub accounts or not.

Can I have sub accounts under sub accounts?

No. QuickBooks Online allows only one level of sub accounts. You can have a parent AP account with multiple sub accounts under it, but you cannot create a sub account under a sub account. If you need more detailed tracking, use Classes or Cost Centers in addition to your sub accounts.

Will my balance sheet change if I create AP sub accounts?

No. Your balance sheet will still show only the parent Accounts Payable account with the total balance. Sub accounts are hidden from the balance sheet; they exist only to organize your records and provide detail in internal reports. The total owed stays the same.