It is possible to attach multiple PDF files to represent summary totals for Form 8949. In a situation where a single PDF file would be quite large in size, it may even be necessary to attach multiple PDF files as there is a size limitation of 3 MB for attachments in the TaxAct Online program (2 MB for the Desktop program).
To understand better how PDF attachments are supported for Form 8949, follow the steps below to view the Form 8949 Attachment Information Summary. Multiple copies of this summary form can be created in the return and then 1 PDF attachment is used to represent the information contained in each summary form. Each form can represent up to 6 worksheets in the return (1 worksheet for each of the 6 different reporting categories on the form), however there would still be only 1 PDF to represent each Form 8949 Attachment Information Summary form created. If multiple forms would represent the same brokerage, you would need to somehow differentiate the brokerage name entry for each form (i.e. TD Ameritrade 1, TD Ameritrade 2, TD Ameritrade 3, etc.).
To view the Form 8949 Attachment Information Summary form:
To enter the information for each Form 8949 Attachment Information Summary form (each form created would then be represented by a PDF which would be attached to the return in the filing steps):