Call the IRS at 1-800-829-1040
For business tax questions, call 1-800-829-4933
For international callers, call 267-941-1000
Use the IRS contact options at https://www.irs.gov/help/telephone-assistance
Have your Social Security number (or ITIN), tax year, and relevant documents ready
If you need help with a specific issue, use the “Where’s My Refund?” tool at https://www.irs.gov/refunds
For payment plan or balance due help, call the number on your IRS notice or bill, or use the IRS phone directory at https://www.irs.gov/help/telephone-assistance
If you need TTY/TDD, use 1-800-829-4059
If you’re a business or tax professional, use the IRS practitioner line at 1-866-860-4259
Submit a request for help through your IRS online account at https://www.irs.gov/payments/your-online-account
If you prefer not to call, use the IRS “Contact Us” page to locate the right department and options at https://www.irs.gov/help/telephone-assistance