I an unable to find if there is an easy way to eliminate the early discounts. All of our invoices are payable upon receipt and we offer no discounts. Thanks,
Early payment discounts are offered only if you explicitly check the box on the sales invoice form:
Ordinary discounts also appear only if such a column is enabled on the sales invoice form:
If either option is always showing on your sales invoices, that means it has been selected in Form Defaults (at the bottom of the Sales Invoices tab listing):