Tax Rounding Creates Price/report Inconsistencies

[ChrissiePollock]

The Square extension appears to be rounding the tax value, for example San Jose 9.3750% to 9.38%.

As WooCommerce calculates taxes to 5 decimal places before rounding, this is causing rounding errors.

This error occurs at checkout. The customer is paying a different amount at checkout from the amount shown in the WooCommerce order.

"Customer adds product to the cart, goes to checkout, fills CC info, presses Place Order button. WC showed 49.94$ but Square charged for 49.95$ for instance."

Original request: The merchant is selling products in the US and uses TaxJar to get actual tax rates based on the ZIP code, which is working fine. For example: An order was placed with this zip code - 95128. TaxJar provided tax rate equal to 9.375% - https://app.screencast.com/ELk4MOOSFfeik and based on order total tax calculations look like this - 64.78 * 0.09375 = 6.073 ~ 6.07 . That is completely fine. But once the order is placed to the Square, tax has been recalculated based on Square own tax rate - 9.38%: https://app.screencast.com/9iaMwI9gY4xg9 and as the result it equals to: 64.78 * 0.0938 = 6.076 ~ 6.08.

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