IRS Letters and Forms
CP403

CP403 — 1 st Notice – EPMF Return Delinquency

What this IRS notice code means, and what to check before you reply.

What to do next

Start with these steps before you reply.

CP403

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.

What the IRS language says

1 st Notice – EPMF Return Delinquency

What it usually means

CP403 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.

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