IRS Letters and Forms
Notice code 766

Notice code 766 (Default) — We changed the amount reported as Additional Medicare Tax, Form 8959 on page 2 of your tax return. T…

We changed the amount reported as Additional Medicare Tax, Form 8959 on page 2 of your tax return. There was an error computing Part III, line 17, Form 8959, Additional Medicare Tax.

What to do next

Start with these steps before you reply.

766

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 changed the amount reported as Additional Medicare Tax, Form 8959 on page 2 of your tax return. There was an error computing Part III, line 17, Form 8959, Additional Medicare Tax.

What it usually means

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

Have this letter in hand?

Bring it to a free call and leave with a plan for your reply.

Ask about this letter