Hide the display of Tax line on Checkout and in the Invoice for zero tax products

Hi, currently on Checkout (Order Summary) and in the Invoice, there is a line item for Tax, even when tax is zero. We would like to hide the display of this default Tax line both on checkout, as well as on the actual invoice. i.e., rather than show a line for Tax with value zero, we would just like to hide the display of this line entirely. Could anyone advise how best to do this on the Order Summary as well as on the Invoice? Thanks!

Having an option of removing the tax line altogether would be good. Legally it's an issue if an invoice states there is zero tax, when in fact there may be tax within the selling price. This happens in Australia and New Zealand where GST is often embedded in the retail price, and the tax is not always displayed. In some instances GST may or may not be included, but the purchase price is the same regardless (it can be a complex tax code).

I have the same requirement. I need to hide tax line. Is it possible?

(I use Foster template)

Thanks.

Same, we are a 501c3, and need to remove that line.