What this IRS notice code means, and what to check before you reply.
Start with these steps before you reply.
Read the notice carefully and note any deadline. Gather returns, notices, and payment records. Book a free strategy session before responding if the amount is large, unclear, or collection language appears.
We changed your tax and/or credits because we did not receive the additional information we requested. The change includes the disallowance of all or part of your telephone excise tax refund you requested on your tax return. We previously sent you a separate letter explaining the disallowance.
89 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.
Every notice in this library, sorted the way the IRS numbers them.