Withholding taxes from payments to vendors when there are multiple taxing authorities

Multiple states/cities are now requiring that we withhold taxes from payments to performers who perform within a state/city but don't live there.  We pay the performer night of the performance the net amount (gross less the withholding amounts) with a manual check.  We need to be able to get that information in the system and create a payable to the other taxing authorities for the withholding amoutns.  The only non-custom solution we can come up with is one entry for the manual without match for the net check and then another voucher for the same supplier with multiple pay items