settings will not allow me to change first month of income tax year from april 6 to april 1

Hi there, bigwood. In QuickBooks Online, the Income Tax Year is tied to your country’s standard tax year. For UK users, the default tax year starts on April 6th and ends on April 5th of the following year, as per HMRC requirements.
 

It isn’t possible to change the tax year date to April 1st, as QuickBooks Online is built to comply with HMRC’s official tax year structure.
 

If you need to make adjustments or encounter any issues with your setup, I recommend contacting our live experts during their available hours. They can review your account and assist with any necessary changes.
 

If you have additional questions, please leave a comment in this thread. We’re here to help.