What This Notice Means
CP51C tells you the IRS computed the tax on your Form 1040 or 1040-SR, and your account balance is zero. You don't owe anything for that year, and no refund is coming. The notice explains how the IRS calculated your tax.
CP51C is one of three related notices the IRS sends after it computes the tax on a return. CP51A means you owe. CP51B means you're due a refund. CP51C means the balance is zero. CP51C is not a final notice and not a warning that enforcement is coming.
What to Do
- Read the notice and compare the IRS's calculation with your copy of the return.
- If you agree, you don't need to do anything.
- If you disagree with the tax the IRS computed, contact the IRS.
- Keep the notice with your records for that tax year.
When a Zero Balance Is Worth a Second Look
A zero balance is usually the end of the story. Still, check it. If you expected a refund, the IRS's figures may differ from yours on income, withholding, credits, or payments. Line the notice up against your return and your Forms W-2 and 1099. If you made estimated payments, confirm they all show up.
If You Disagree
Write or call using the contact information on the notice. If you write, explain why you disagree and include copies of anything that supports your position, such as cancelled checks or an amended return. If you call, have that paperwork ready. Keep a copy of everything you send.
Next Year
Consider filing electronically. It helps you avoid math mistakes and can help you find credits and deductions you qualify for. Review your withholding too, so the result next year is what you expect.
If you expected a refund and your CP51C shows zero, call us at (813) 229-7100.