IRS letter help
Got an IRS CP503 Notice? What It Means and What to Do
A CP503 is the second reminder that a balance is still unpaid. The next notice in the usual sequence is a notice of intent to levy, so this is the letter to act on.
Reviewed by LaToya Clark-Thompson, FounderLast updated
What this letter is
The IRS describes the CP503 as your second reminder that you still owe a balance on one of your tax accounts. It comes after earlier notices, usually a CP14 and a CP501, went unpaid or unanswered. It shows the amount owed, the payment due date and your options.
It is still not a levy notice. But in the standard sequence the next letter is the CP504, which is, so there is less room left than at the first two stages.
Why you got it
- Earlier balance notices were not paid or answered by their due dates
- A payment plan request was started but never completed
- You disagreed with the balance but did not call or write to the IRS about it
- Payments were made but applied to another year or another type of tax
What to do now
- Read the notice for the balance and the due date, and compare the balance with your own records
- If it is right, pay in full online or by mail with the bottom portion of the notice
- If you cannot pay in full, apply for a payment plan through the online payment agreement application or your IRS online account, or by mailing Form 9465
- If you disagree or have already fixed the problem, call the toll-free number on the notice promptly so the IRS can confirm your account reflects it
- If you think collection itself is being handled wrongly, the notice explains how to request a Collection Appeals Program review before collection action begins
Our guide to responding to an IRS letter covers how to keep a record of every call and what you sent.
What happens if you ignore it
The IRS says that if you do not pay, make arrangements or contact it, it may file a notice of federal tax lien if it has not already. A lien is public notice that the IRS has a right to your current and future assets and can affect your ability to get credit. Penalties and interest keep adding to the balance.
After the CP503 the usual next step is the CP504 notice of intent to levy, and after that the final notice before levy with its formal hearing rights, the LT11 or CP90.
How we help
We compare the notice with your return and the IRS transcript, trace payments that did not land where they should have, and prepare any return that has to be fixed or filed first. That includes amended returns and past-due returns, since a plan generally requires every required return to be on file.
When the account needs professional representation before the IRS, the independent licensed CPA we work with handles it, and our office coordinates the documents. See tax resolution.
What to send us
- A photo or scan of every page of the CP503 and any earlier notice for the same year, through the client portal
- The return for that year
- Records of payments made toward it
- Notes from any call you have had with the IRS: date, name or ID number of the person, and what was said
Frequently asked questions
How serious is a CP503 notice?
It is more serious than the first two notices because the next one in the usual sequence is the CP504, a notice of intent to levy. It still does not mean money is being taken. Paying, setting up a payment plan, or contacting the IRS about an error before the due date on the CP503 generally keeps the account from moving to the levy stage.
Does a CP503 hurt my credit?
The notice itself does not. The IRS does not report balances to credit bureaus the way a lender does. What can matter is a notice of federal tax lien, a public record that lenders and title companies can find, which can complicate borrowing, selling or refinancing, and the IRS says it may file one if the balance stays unresolved. Resolving the balance or getting on a plan is what avoids that. Tax lien vs. tax levy explains the difference.
I already set up a payment plan. Why did I get a CP503?
Notices can cross in the mail, or a plan request may not have been completed. The IRS asks you to call even if you have already taken action, so it can confirm your account shows the plan. Have the confirmation or agreement details ready when you call the number on the notice.
Can someone call the IRS about my CP503 for me?
Yes, with your written authorization. Form 2848 lets a qualified representative act for you before the IRS. The IRS also lists free options, including the Taxpayer Advocate Service and Low Income Taxpayer Clinics for those who qualify. Our office coordinates with the independent licensed CPA we work with when representation is needed.
Not the question you had? The full tax FAQ covers more ground, and our client reviews say what the work is actually like.
Related pages
CP501 notice
The first reminder after an unpaid bill. Still early, still fixable with a payment or a plan.
Learn moreCP504 notice
Notice of intent to levy. The IRS can take a state refund and warns about wages and bank accounts next.
Learn moreLT11 / CP90 final notice
The final notice before levy, with a Collection Due Process hearing right that runs from the letter date.
Learn moreIRS payment plan options
The Simple Payment Plan, other installment agreements, short-term plans, hardship status and offers.
Learn moreIRS penalty relief
The Automatic Exemption from Penalty, which replaces First-Time Abate, and reasonable cause relief.
Learn morePart of IRS & SC Letter Help. Not sure which service fits? Answer a few questions.
Tell us what you need
Send a short note about your situation and we’ll come back to you with a straight answer — whether that’s a quote, a next step, or a referral if it isn’t something we handle.
Prefer to talk it through first? Book a consultation and we’ll find a time, in the Easley office or virtually.
Send us the letter. We will tell you what it means.
Call (864) 781-4035 or book a consultation, in the Easley office or virtually.