Please try clicking in the month box and using the arrow keys to select the month.

If you are still not able to resolve this issue, please contact our phone support team for more assistance. 

Clicking in the month box and then using arrows did NOT work. I have tried this previously. Using the arrow keys only allowed me to scroll to last displayed month which was 10. It looked like the frame for the scroll box extended outside the active windows window and therefore it could not be scrolled to or arrowed to. I had to use a different credit card with an expiry date < 10 in order to proceed.

Thank you for your feedback, and we will be looking into this.

I had the same issue purchasing Audit Defense, can't enter any expiry date after 10 (October).  I called Telephone Support today and this issue wasn't fixed - it's over a month since the last update on March 6, 2026. 

I was told use another credit card, but I need to use the one I'm using to get a $15 statement credit from the card issuer. Turbotax won't honour that and just told me to use another credit card.  Not using Turbotax next year after this experience.    

Our technical engineering team are looking into this, and hope will be added with our new update coming on Thursday. Have you tried just manually entering 11 or 12 to see it would be accepted.?

I was told to try these 3 methods, but none worked...

This is a known UI bug in the TurboTax Desktop software where the credit card expiration dropdown fails to register mouse clicks for months 09 through 12.

To bypass this restriction and enter "10," use one of the following keyboard-based workarounds:

Method 1: The "Tab and Type" Fix (Most Reliable)

Instead of clicking the dropdown menu, use your keyboard to force the input:

1. Click into the Credit Card Number field.
2. Press the Tab key on your keyboard once to jump to the Month field.
3. Immediately type "10" (do not use your mouse).
4. Press Tab again to move to the Year field.

Method 2: The Scroll and Enter Fix

If you have already opened the dropdown menu:

1. Use your mouse scroll wheel or arrow keys to highlight "10."
2. Do not click it with your mouse.
3. Press the Enter key on your keyboard to select the highlighted month.

Method 3: The "CTRL" Shortcut

Some users have reported success by:

1. Holding down the CTRL key on your keyboard.
2. While holding CTRL, click the Expiration Month dropdown. This may force the UI to properly register your selection.

Note: If these methods still fail, some users found that entering a "wrong" month (like 02), letting it fail the validation check, and then re-entering the correct month sometimes "unlocks" the field for a second attempt.

Thank you for your feedback. This is a known issue and they are hoping to have it resolved on the next update by end of week.