@Sir K It's a two step process. 1. Use the "Write Check" feature to prepay the vendor, and then create a "Vendor Credit", so that when the bill comes you can apply the credit (i.e. prepayment). It took a little getting used to, but it works for us https://netsuite.custhelp.com/app/answers/detail/a_id/11174/kw/vendor%20prepayments