For T5's, Turbotax is asking to pay for the Deluxe version, $39. Costco sells the Deluxe version for $29, is it the same version? Some customers claim T5 don't work?

Bought Turbotax Deluxe from Costco, $29, includes 8 returns

Self-employed

For 2021, the ability to enter interest income (whether on a T5 or not) is only available in TurboTax Premier Online (or higher). Please see this TurboTax FAQ for more information: Why did I have to upgrade my TurboTax Online edition?

 

If you entered your activation code before starting your returns, then you will only have to pay the difference in price between Deluxe & Premier.