This makes no sense. If an employer provides a TP64.3 to you it would mean that you would surely NOT file the simplified claim; you would obviously choose the detailed method which is substantially more beneficial.
https://www.revenuquebec.ca/en/online-services/forms-and-publications/current-details/tp-59-s/
The above link CLEARLY states that if you complete part 1 and 2 of TP-59-S-V you do NOT need a TP64.3.
TurboTax: stop feeding users incorrect information AND FIX YOUR SOFTWARE!!
