IRS Letters and Forms
CP30A

CP30A — Notice to taxpayer of refund due to recalculation of penalty for failure to pay estimated taxes.

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

What to do next

Start with these steps before you reply.

CP30A

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

Notice to taxpayer of refund due to recalculation of penalty for failure to pay estimated taxes.

What it usually means

CP30A 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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