Hello there, websolprov,

Our Product Team is aware of this behavior. However, they provide a workaround to reduce the Employer NI.

Please refer to this post: https://quickbooks.intuit.com/learn-support/en-uk/employees-and-payroll/re-employer-ni-expense-not-b..., then follow BigAl42 post in creating a journal entry. This will help you on how to handle the Employment Allowance correctly in QuickBooks Online.

Should you have follow-up questions, don't hesitate to leave a comment below. I'm always right here to help.