Thanks for joining the Intuit Community, jmharding.
I appreciate you looking for ways to keep your transactions and VAT figure in order. Let me point you in the right direction about rounding down the tax calculation.
When you create invoices or sales receipts, the Rate field allows you to enter more than 3 digits. However, the amount is rounded off to the nearest penny.
We listen to customers’ ideas and suggestions as it contributes significantly to developing product enhancements. You can always visit the QuickBooks Blog site to check the latest feature added to the application.
This information should have you on the right track.
The Community has your back, so please don't hesitate to let me know if you need anything else. I’ll be right here.
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