Managing sales tax accurately is critical for compliance and clean financial records. If you use Automated Sales Tax in QuickBooks Online, you can easily adjust your sales tax liability when special situations arise—such as tax credits, penalties, or rounding differences—without disrupting your filing process.
This guide explains when and why to create a sales tax adjustment, how different account types affect your books, and the step-by-step process to add or delete adjustments in QuickBooks Online.
Why You May Need a Sales Tax Adjustment
Automated Sales Tax simplifies tax calculations, but adjustments are sometimes necessary to reflect real-world changes. Common reasons include:
Tax Credits – Credits issued by a tax agency
Prepayments – Advance payments made toward a future return
Prior Prepayments – Payments made in earlier filing periods
Penalties or Fines – Charges for late filing or non-compliance
Rounding Differences – Minor discrepancies caused by rounding rules
Using adjustments allows you to correct your sales tax balance without manually altering past transactions.
How Account Types Affect Sales Tax Adjustments
When you create a sales tax adjustment, the account type you select determines whether your sales tax payable increases or decreases. Choosing the wrong account can impact both your financial statements and tax reporting, so consult your accountant if you’re unsure.
Impact of Account Types on Sales Tax Adjustments
| Account Type | Effect on Sales Tax Payable | Accounting Impact |
|---|---|---|
| Income / Other Income | Decreases sales tax payable | Increases income on Profit & Loss; reduces tax liability on Balance Sheet |
| Expense / Other Expense | Increases sales tax payable | Increases expenses on Profit & Loss; increases tax liability |
| Asset | Decreases sales tax payable | No P&L impact; reduces asset balance and tax payable |
| Liability | Increases sales tax payable | No P&L impact; increases liability balance |
Why You Can’t Select the Sales Tax Liability Account
Sales tax adjustments are double-entry transactions. One side of the entry always affects the sales tax liability account, which QuickBooks handles automatically.
You only need to select the offsetting account (income, expense, asset, or liability). Selecting the sales tax liability account manually would create a debit and credit to the same account, canceling the adjustment entirely.
How to Add a Sales Tax Adjustment in QuickBooks Online
Important: If you’re unsure which account to use, consult a tax professional before proceeding.
Step 1: Set Up an Adjustment Account (If Needed)
To adjust sales tax correctly, you must use the appropriate account type.
Switch to Accountant View
Go to Accounting > Chart of Accounts
Select New
Choose the appropriate Account Type:
Income or Asset → To decrease tax due
Expense or Liability → To increase tax due
Select the Detail Type:
Sales of Product Income (Income)
Taxes Paid (Expense)
Name the account (e.g., Sales Tax Adjustment)
Click Save and Close
Step 2: Create the Sales Tax Adjustment
Go to Sales Tax
Select the tax agency and return period
Click View Summary
Select Add adjustment to books
Choose an adjustment reason
Enter the adjustment date
Select the adjustment account
Enter the adjustment amount
Click Save
Your sales tax payable will automatically update.
Adding Adjustments While Filing Sales Tax in QuickBooks
If you file sales tax directly through QuickBooks (Sales Tax Essentials subscription required):
Go to Sales Tax
Select the tax agency and period marked Due
Click File return
Expand the Adjustments section
Select Add adjustment
Enter the reason, date, account, and amount
Click Save
This updates both:
The amount paid to the tax agency
Your accounting records
Note: Discounts and use tax have dedicated fields—do not add them as general adjustments.
How to Delete a Sales Tax Adjustment
If an adjustment was entered incorrectly, you can remove it before or after filing—though caution is required.
Steps to Delete an Adjustment
Go to Sales Tax
Select the tax agency and return period
Click View Summary
Locate the adjustment
Select Delete
Confirm by selecting Delete again
Important Filing Notes
Not yet filed: You can safely delete the adjustment
Already filed: Deleting the adjustment will cause discrepancies with tax agency records
👉 Instead, add a correcting adjustment to your next return
Final Thoughts
Sales tax adjustments in QuickBooks Online help keep your books accurate and compliant without altering historical data. When used correctly, they simplify corrections for credits, penalties, and timing differences.
However, because adjustments directly impact your tax liability and financial reports, it’s best to:
Use the correct account type
Document the reason for every adjustment
Consult a QB Sales tax professional when unsure
Accurate adjustments today prevent major reconciliation and compliance issues tomorrow.
✅ FAQs
1. What is a sales tax adjustment in QuickBooks Online?
A sales tax adjustment allows you to increase or decrease the amount of sales tax you owe without modifying past transactions. It is commonly used for credits, penalties, rounding differences, or prepayments.
2. When should I create a sales tax adjustment?
You should create a sales tax adjustment when you receive a tax credit, incur a penalty, make a prepayment, or need to correct small discrepancies caused by rounding.
3. Does a sales tax adjustment affect my financial reports?
Yes. Depending on the account type selected, the adjustment can impact your Profit & Loss statement and Balance Sheet by changing income, expenses, assets, or liabilities.
4. Why can’t I select the sales tax liability account while creating an adjustment?
QuickBooks automatically applies one side of the adjustment to the sales tax liability account. Selecting it manually would create a duplicate debit and credit, canceling out the adjustment.
5. Which account should I use to increase sales tax payable?
Use an expense or liability account if you need to increase the amount of sales tax due to the tax agency.
6. Which account should I use to decrease sales tax payable?
Use an income or asset account when reducing sales tax payable due to credits, discounts, or overpayments.
7. Can I delete a sales tax adjustment after filing the return?
You can delete an adjustment before filing. If the return has already been filed, deleting the adjustment may cause discrepancies with tax agency records. In such cases, add a correcting adjustment in the next return.
8. Will deleting an adjustment change the amount paid to the tax agency?
Yes. Deleting an adjustment updates your sales tax summary and liability balance. However, it does not change payments already submitted to the tax agency.
9. Can I add sales tax adjustments while filing through QuickBooks?
Yes. If you file sales tax directly through QuickBooks, you can add adjustments during the filing process to change the amount paid and update your accounting records.
10. Should I consult an accountant before making sales tax adjustments?
Yes. Sales tax adjustments directly affect compliance and reporting. Consulting a tax professional ensures the correct account and adjustment method are used.