Are you asking about the add on feature called TurboTax MAX or do you mean "maximum refund?' Are you asking if your refund will be bigger if you upgrade to a paid version of the software?
https://ttlc.intuit.com/community/choosing-a-product/help/what-is-max/00/26700
Use the software version that you need to enter all of your data for the best results. You might be able to accomplish that using free software. We do not know what you need to enter.
And if you qualify there are some free and full-featured software programs.
If you qualify to use it, there is another full-featured free version of the software:
Try Free File:
You qualify if your income was $39,000 or less, or $72,000 or less if active duty military, or if you qualify for Earned Income Credit
https://ttlc.intuit.com/questions/1900583-what-is-turbotax-free-file-program
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
