CP05 vs 4464 Letter - What's the real difference? Need help understanding

Tax pro here. CP05 is an income verification review notice - IRS is double checking your W2s, income sources, etc. The 4464 is specifically about identity verification. They're different processes but can happen simultaneously. CP05 can take 60-120 days, while 4464 needs immediate action to verify your identity.

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stuck in the same boat rn 🚣‍♀️ got my CP05 in February and 4464 last week smh

The IRS is playing games fr fr... sending multiple letters like we supposed to decode this stuff ourselves 🤡

Quick tip: take pictures of both letters and keep ALL correspondence. Trust me on this one.

Called the IRS about this exact thing last week. Was on hold for 2.5 hours just to get disconnected 😭

Had this exact same situation last year! The key thing to remember is that these are two separate review processes that can run parallel. For the 4464, you'll need to verify your identity either online through ID.me or by scheduling an appointment at a Taxpayer Assistance Center. Don't wait on this one - it has strict deadlines. The CP05 income verification will continue its own timeline regardless. Pro tip: once you complete the identity verification, call the number on your CP05 letter to let them know - sometimes it can speed up the income review process since they'll have confirmation you're legit.