There is a thread on the French TurboTax community forum that discusses the issue of the TP-726.6 form blocking the 2024 Quebec declaration from being saved as a .PDF file, or printed, or Netfiled. TurboTax is aware of the problem and has posted that a solution may be available during the first week of March. At first I thought my application was corrupted and I was prepared to over-install a new version on my PC. Then I moved my data file to another computer loaded with TurboTax in a different official language and I got the same error there. TP-726.6 (and T936) concerns Cumulative Net Investment Losses, in which past and present interest and investment income/expenses play an intrinsic role. If in 2024 and/or before, you had interest income reported via a T5 or RL3 slip, then TurboTax has likely added a locked TP-726.6 (or T936) form to your 2024 return. I imagine that recent changes to the tax rules concerning capital gains are responsible for previously certified forms being locked and now needing to be re-certified by the tax departments.
