IRS Letters and Forms
Notice code 40

Notice code 40 — We adjusted your tax as shown because we didn’t receive a reply to our request for additional inform…

We adjusted your tax as shown because we didn’t receive a reply to our request for additional information.

What to do next

Start with these steps before you reply.

40

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

We adjusted your tax as shown because we didn’t receive a reply to our request for additional information.

What it usually means

40 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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