From 24/7 Wall St. · Vilma Rios · · 1m 20s
IRS Sends 1.6 Million CP2000 Letters
IRS sent 1.6 million CP2000 letters last year, most triggered by unseen 1099s. 30 days to dispute.
In brief
IRS sent 1.6 million CP2000 letters last year, most triggered by unseen 1099s. 30 days to dispute. The IRS sent 1.6 million CP2000 'proposed changes' letters last year, mostly triggered by 1099s taxpayers never saw, with a 30-day window to contest. Originally reported by 24/7 Wall St..
Quick answers
- What is a CP2000 letter?
- The IRS sent about 1.6 million CP2000 'proposed changes' letters last year. Most were triggered by 1099s taxpayers never saw.
- Why do CP2000 letters happen?
- The IRS Automated Underreporter program matches your return against W-2s and 1099s filed by payers.
- What is the key takeaway from IRS Sends 1.6 Million CP2000 Letters?
- The IRS sent 1.6 million CP2000 'proposed changes' letters last year, mostly triggered by 1099s taxpayers never saw, with a 30-day window to contest.
What is a CP2000 letter?
The IRS sent about 1.6 million CP2000 'proposed changes' letters last year. Most were triggered by 1099s taxpayers never saw.
Why do CP2000 letters happen?
The IRS Automated Underreporter program matches your return against W-2s and 1099s filed by payers.
Common triggers for CP2000 letters

Forgotten Forms 1099s, stock sales without basis, or unopened brokerage statements often trigger CP2000 letters.
Sample CP2000 case
A retired couple sold stock for $40,000 with $34,000 basis. The IRS taxed the full $40,000 without subtracting the basis.
CP2000 response window
The IRS gives 30 days to respond to CP2000 letters, or 60 days if outside the United States.
How to respond to a CP2000 letter
Identify the form, check against a wage transcript, and either agree, disagree, or fix the 1099.
Silence means agreement
Without a response, the IRS treats silence as agreement and finalizes the proposed changes.
Tax court deadline after silence
After 90 days, you can petition the Tax Court to challenge the IRS’s proposed changes.
What it means
The IRS sent 1.6 million CP2000 'proposed changes' letters last year, mostly triggered by 1099s taxpayers never saw, with a 30-day window to contest.





