I assume the 3-5 Job - Sales Tax District is for AR sales tax purposes, and that the 4-4 Vendors Tax District is for vendors.   We are a nationwide contractor and the vendor's tax rate depends on where the goods are being delivered (i.e., our specific job site).  I haven't been able to figure out a way for Sage to calculate the sales tax without having to go back and forth in a 4-4 vendor's record and change the tax district.   We have alot of big box construction stores across the country who also allow us an early-pay discount, but because we haven't been able to overcome the tax district obstacle, then Sage can't correctly calculate the discount and it has to be manually entered.

It would be nice if the 3-5 Job - Sales Tax District could be used for vendor purchases, because at least for AR purposes, you have the flexibility to say "No" in the grid as to whether the line items are taxable to the AR billing.