I think there’s a misunderstanding about how this works. Costco doesn’t have any control over TurboTax’s desktop software or checkout process. They simply sell the license key and distribute the boxed or digital version.
I’m not suggesting anything about Costco’s advertising — the issue isn’t what Costco shows or sells. The problem is that TurboTax’s own software continued to display and apply the $10 credit during checkout, then removed it at payment. That’s not something Costco can fix. It’s a programming issue inside TurboTax’s system that should reflect the fact that the credit is no longer issued after April 30.
The app is clearly being updated regularly — almost every time it’s opened, it requires a new download — so there’s no excuse for TurboTax not to correct this. Whether Costco is an authorized retailer (which it is) doesn’t change that. The responsibility for how the software behaves and what it displays lies entirely with TurboTax.
