IRS Letters and Forms
CP801

CP801 — Math Error—Balance Due of $5 or more on Form 940PR (BMF/Spanish)

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

What to do next

Start with these steps before you reply.

CP801

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

Math Error—Balance Due of $5 or more on Form 940PR (BMF/Spanish)

What it usually means

CP801 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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