Hello Bundamba,
QuickBooks will only calculate the amounts on a transaction based on how you enter them. You can manually enter the $4.30 in the tax amount field. However, the amount where the calculation is based on will be changed. You can also use this link for reference: Manage a tax rate change.
Since we're talking about tax amount that will affect the submission of forms, I'd recommend recommend reaching out to your tax agency or accountant. They can give you options on how you can record it in QBO.
From there, we might be able to assist you on how to do it within the program based on their advice.
Let us know how this goes so we can give you a hand. Have a great day!
