Can there please be an option added so that sales tax can be calculated without rounding on each line item?Tax totals on larger invoices are sometimes wrong.

Hello there, 

I know how important it is to ensure accurate tax calculation in your QuickBooks Online account. QuickBooks is designed with precision to ensure your numbers are generated correctly. 

You may notice a penny difference in your transactions because the rounding precision for sales tax calculations is designed for 2 decimal places in QuickBooks Online. There's been an ongoing discussion about this in our Community forum, where some users have offered helpful insights. Take a look at that thread here: Tax Rounding.

I'd also encourage you to explore this article: Tax Rounding off logic in QuickBooks Online API. This goes through the tax rounding logic in QuickBooks Online from the development team.

We always value customer feedback. I recommend sending your thoughts and suggestions to the engineering team directly by clicking the Gear icon > Feedback. We're always looking for new ways to improve. 

If you have any other questions, let me know. 

Cheers!​​​​​​​