1-800-304-3107
For more information, you can visit this IRS website: https://www.irs.gov/taxtopics/tc203
You should contact the agency shown on the notice if you believe you don't owe the debt or if you're disputing the amount taken from your refund. If you don't receive a notice:
- Contact the BFS's TOP call center at 800-304-3107 (or TTY/TDD 866-297-0517), Monday through Friday 7:30 a.m. to 5 p.m. CST.
- Contact the IRS only if your original refund amount shown on the BFS offset notice differs from the refund amount shown on your tax return.