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 the amount claimed as itemized deductions on Schedule A, Itemized Deductions, and used the standard deduction or the higher standard deduction for age or blindness on page 2 of your tax return. This resulted in a lower taxable income.
555 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.