Yes, you can upload the .tax file using any document transfer service (like Google Drive or gmail or One Drive, except Macs) and then download it on the mac. If you have a gmail account, it can take awhile to upload to gmail, but it will attach automatically using google drive.
You can use the instructions below for getting the .tax file and then once you have it on the Mac: https://ttlc.intuit.com/replies/3302046
