I missed tax refund deadline, but I file it today, whether it can be accepted?

[mesquitebean]

If you are referring to a 2023 return and are due a Federal refund, then missing the April deadline doesn't matter.   You have 3 years from the due date to claim a refund if you are due a refund.

Did you go all the way to the final screen and click the "Transmit Returns Now" button?   If so, you should receive an email that the return has been submitted and is "pending."    After 24-48 hours (or in some cases much sooner), you should receive a second email stating if the efiled return was accepted or rejected.

Addendum:  You can also check the efile status by logging back into Online TurboTax and going to the Tax Home. 

[mesquitebean]

@weifangwu   I added above that you can also check the efile status at any time by logging back into TurboTax Online and going to the Tax Home.  If for some reason you don't receive the emails about your efile status, that's another way to check.