I don't know of a way to change the phone number that was sent to the IRS. There is an IRS address change form which has a slot for your phone number (optional) but you aren't really changing your address. One can also phone the IRS for a change of address, but I don't know if they want people to contact them just for a phone number.
A phone number is not required on a tax return. It's optional. The IRS does not normally contact someone by phone for initial contact. One should assume an initial phone call from the IRS is fake until proven otherwise.
See the answer the TurboTax support agent left in this other thread:
<a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/3854007-filled-in-wrong-phone">https://ttlc.intuit.com/questions/3...>
You may get some more comments in this user community forum today.
