There are no PAYG withholding adjustments showing in the BAS report, but the W1 figure shows as negative for one month. I've checked the Tax Codes reports any tips?

A negative W1 balance in QuickBooks Online indicates that your total debits with the W1 tax code exceeded your credits for the month. You can review journal entries for specific payroll deductions or adjustments, check your payroll settings for incorrect account mappings, or adjust the balance on your finalized BAS.

Since you have already checked the payroll journals, the next step is to verify your account mappings in Payroll Settings.

1. Click the Settings (gear icon) menu in the upper-right corner and select Payroll settings.
2. Go to Pay Categories or Deduction Categories under PAY RUN SETTINGS.
3. Ensure you have mapped each category correctly to W1.
4. Save your changes.

After fixing the category mappings, return to the BAS report to review the updated payroll data. You can then finish lodging your PAYG Payment Summary report and BAS. For step-by-step instructions, you can refer to these guides:

• Lodge a PAYG Payment Summary Report
• Lodge your BAS or IAS in QuickBooks Online

Please let us know if you have any questions. We’re to help.