IRS Notice CP503 – Reminder About Unpaid Tax Balance

The IRS issues Notice CP503 to taxpayers who continually refuse to settle their outstanding tax balances despite repeated attempts.

What if you receive IRS Notice CP503?

Because you ignored multiple other letters from the IRS, including notice CP501, and failed to pay your balance due, you were handed notice CP503.

What You Can do?

Read the CP503 notice completely, and make sure to keep a copy for your records. After receiving the letter, you have 21 days to respond or pay the balance.

In case you agree with the amount due:

  • To avoid further penalties and interest fees, pay up your debt in full before the due date. Use the attached payment stub to make a check or money order payment. At, you can also make payments online.
  • If you are unable to pay the full amount by the due date, request a payment plan and send what you can right away. Other tax relief options include the Currently Not Collectible status and an Offer in Compromise.

In case you disagree with the amount due:

  • Use the IRS phone number on your CP503 notification to contact them. So that you can discuss your problems with an IRS representative, have your account information handy.
    The IRS will file a Notice of Federal Tax Lien if it hasn’t already if you don’t reply by the deadline date provided.

If I have more questions whom should I contact?

  • If you have any questions about your IRS Notice CP503, please call the IRS at (800-908-4490) or the number on the notice. Call Dancing Numbers Tax Help at (800-596-0806) for a free consultation if you need help creating a payment schedule or exploring your other tax relief options.


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