But then I don't understand why I git the letter from IRS.

[hulagirlatheart7]

Don't understand why I got the letter from IRS then

[clmangene]

The IRS may contact you for several different reasons when you file your return.  It's important to carefully review the notice and determine if the Service is asking you to pay, just needs more information to process your return, is responding to a potential error, or is actually questioning items. If you can't make heads or tails of the notice, even after contacting the service, then it's time to ask for professional help.