Why does QuickBooks always come up with $.01 more on VA state taxes than what my auto body estimating software does? Even my own calculations come up with $.01 less.

One reason could be that your tax due is based on a total of sales/payroll (you did not say which kind of tax) per period, such as a month or quarter while QB calculates the tax liability for each and every transaction., in which case you will have to make a liability adjustment.

You would have to a similar same thing if VA offered you a prompt payment discount

Oh, sorry! 

This was based off of just invoices that I've been trying to do via QuickBooks. Whenever I add in the sales and services and click which are taxable they never add up to what my estimating software (CCC) and my own calculations are. I add in the parts, services, and sublet repairs that are in CCC; and it never quite adds up correctly. 

Let's dig into your invoice to check if you selected the correct tax rate, lurayautobody.

Your invoice may contain different kinds of tax rates that you can choose. You'll want to select the correct percentage tax rate to correctly calculate the total amount. I've attached a screenshot for your visual guide.

You also have the option to add a rate by clicking the Add new option.

For reference, you can read this article for more information about filing and recording sales tax: File Your Sales Tax Return And Record Tax Payment In QuickBooks Online.

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