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 didn’t allow part or all of the amount claimed as health coverage tax credit from Form 8885 on page 2 of your tax return. The statute requires that for any month you claimed the credit you cannot be entitled to Medicare Part A or enrolled in Medicare Part B on the first day of that month.
670 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.