Can I get back money the IRS took out of tax return stating I couldnt claim my 16 year old that lives at home and goes to school

[DavidD66]

It depends.  You will need to contact the IRS and determine why they disallowed your claiming your child.  Once you speak to the IRS you may need to provide additional information/documentation, and/or file an amended return.  But you will need to start by contacting the IRS. 

Before you call, make sure you know or have the following information handy:

• Social Security cards and birth dates for those who were on the return you are calling about
• An Individual Taxpayer Identification Number (ITIN) letter if you don’t have a Social Security number (SSN)
• Filing status – Single, Head of Household, Married Filing Joint or Married Filing Separate
• Your prior-year tax return. We may need to verify your identity before answering certain questions
• A copy of the tax return you’re calling about
• Any letters or notices we sent you

IRS phone numbers 

Customer service representatives are available Monday through Friday, 7 a.m. to 7 p.m. local time, unless otherwise noted. Residents of Alaska and Hawaii follow Pacific time. Puerto Rico phone lines are open 8 a.m. to 8 p.m. local time.

Individuals:

800-829-1040

Businesses:

800-829-4933

People with hearing impairments:

800-829-4059 (TDD) See Tax Topic 102.

Exempt organizations, retirement plan administrators, and government:

877-829-5500 (Monday through Friday, 8 a.m. to 5 p.m. local time)

Estate and gift:

866-699-4083 (Monday through Friday, 8 a.m. to 4 p.m. Eastern time; Forms 706 United States Estate (and Generation-Skipping Transfer) Tax Return and 709, United States Gift (and Generation-Skipping Transfer) Tax Return only)

Excise tax function:

866-699-4096 (Monday through Friday, 8 a.m. to 6 p.m. Eastern time)

If you live outside the United States

Hours of availability vary by location. Please see our International Services page.

Face-to-face assistance

In certain areas, the IRS has local offices you may visit to receive assistance. All offices operate by appointment.

[Mike9241]

this might not be the reason, but ask your son if he filed his own return and did not indicate he could be claimed by another taxpayer (you) as a dependent.