I purchased the standard for 8 returns from costco. . I have done my return and try to put in the installation code but it says it's not valid I am on the online version

[reesestax2018]

I have a mac.  i did this last year. what am i doing wrong this year?

[TurboTaxSusan]

If you bought TurboTax Standard and it came with a 21 character installation code, then it is for the CD/Download version which is Windows only. The codes for the Online version are shorter.

The codes from TurboTax CD/Download will not work with TurboTax Online and vice-versa. If you need a refund, this page has information on how to get one: https://turbotax.community.intuit.ca/replies/2647900

You can then buy the correct version from here: https://turbotax.intuit.ca/x/offers/turbotax-standard.jsp?src=care&cnm=care_fy18_tto_8