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You can call the Treasury Offset Program (TOP) interactive voice response system at 800-304-3107 to check if you owe debt that could cause an offset.

The IRS notice will explain the exact cause. You can call the Treasury Offset Program (TOP)

The IRS may be verifying income (W-2/1099), checking for identity theft, or validating credits like the Earned Income Tax Credit (EITC). checking for identity theft