You can downloads an invoice for charges on a specific campaign, or for a specific date range from the reports module. To begin click on the Reports drop down in the left navigation bar, then click Payment Reports.
To download an invoice for charges on a specific campaign, click Campaign Level Report. To download an invoice for charges over a specific date range, click Account Level Report.
Select the campaign from the drop down menu
Or select the date range .
Then choose between downloading a report in CSV format, or downloading a PDF invoice.
If downloading an invoice you'll have the option to add a Bill To address as well as Tax ID or any other information you need included on your invoice.