What does “Notice of Deficiency” mean?

IRS letter that says you owe more tax. It gives you the right to challenge it in Tax Court.

What to do

You have 90 days from the date of the notice to file a petition with the Tax Court (150 days if it is addressed to you outside the US). This deadline can’t be extended.

“Notice of Deficiency” is a English word used in official letters in the United States. Briefly explains words like this automatically when you check a letter.

More office words

Taxpayer Advocate Service · audit · adjustment · refund offset · SSN · ITIN · EIN · A-Number · all words