Most people who receive a CP504 read it the same way they have read every other IRS notice: with dread, then with avoidance. They set it down. They tell themselves it is just another letter. They do not understand what distinguishes the CP504 from everything that came before it.
The CP504 is not another reminder. It is the notice that authorizes the IRS to begin seizing certain assets immediately — and that signals the final warning before full levy authority arrives.
I'm Charles Rosselli, a Long Island tax attorney. I have been receiving calls from Nassau County and Suffolk County taxpayers holding CP504 notices for over twenty years. The conversation almost always begins the same way: they received it, they are scared, and they want to know if it is as serious as it sounds. My answer is always the same. It is more serious than it sounds.
What the CP504 Actually Does — Immediately
The CP504 — formally titled "Notice of Intent to Levy — State Tax Refund or Other Property" — is the fourth notice in the IRS's standard collection sequence. What makes it different from the CP501, CP503, and the earlier notices is a specific legal consequence that takes effect the moment it is sent.
When the IRS sends you a CP504, it is authorized to immediately levy your New York State tax refund. No further notice is required. No waiting period applies. If you are entitled to a New York State income tax refund — whether you have already filed for it or are entitled to one that has not yet been claimed — the IRS can intercept it the moment the CP504 is in the mail.
The IRS and the New York State Department of Taxation and Finance have a formal interception mechanism for exactly this purpose. Your New York State refund disappears. You receive a notice from the state telling you it has been applied to your federal tax debt. The money is gone.
For Nassau County and Suffolk County taxpayers who count on a state refund to cover property taxes, home repairs, or other obligations, this can arrive as a complete shock — money they were expecting simply does not appear.
Where the CP504 Falls in the Collection Sequence
Understanding the sequence helps clarify how serious the CP504 is.
Before the CP504, you received: a Notice and Demand for Payment when the tax was assessed; a CP501, which is the first reminder; and a CP503, the second more urgent reminder. The IRS has now sent you four separate notices. You have had multiple opportunities to respond, to call, to enter into an arrangement.
The CP504 is the IRS telling you it has run out of patience with the notice-and-request approach and is beginning to use its legal enforcement tools.
After the CP504, if nothing changes, comes the LT11 — the Final Notice of Intent to Levy and Notice of Your Right to a Collection Due Process Hearing. The LT11 is the last required notice before the IRS can levy wages, bank accounts, retirement accounts, and all other property. After the LT11 and its 30-day window, the full enforcement arsenal is available.
The CP504 is one step from the LT11. The LT11 is one step from active levy. If you are holding a CP504, you are two steps from the IRS emptying your bank account and garnishing your paycheck.
The New York State Refund Interception
For Nassau County and Suffolk County taxpayers, the New York State refund interception that the CP504 authorizes carries real financial weight.
New York State income tax rates are among the highest in the country. Combined with the New York City surcharge for those who work in the city, and with the high income levels common in the Long Island professional community, many Nassau County and Suffolk County residents are entitled to substantial state refunds in years when withholding exceeds liability.
The IRS's ability to capture that refund immediately — without the 30-day notice that general levy action requires — means that for some taxpayers, the first tangible financial consequence of the CP504 is a state refund that never arrives. The banking account they expected to receive several thousand dollars into is simply short that amount. When they investigate, they learn the state applied the refund to their federal tax debt at the IRS's direction.
The Balance That Appears on the CP504
The dollar amount shown on the CP504 often shocks people who thought they understood how much they owed.
The balance includes the original tax assessment, the Failure to Pay penalty (which accrues at 0.5% per month, up to 25% of the original balance), interest that has been compounding since the original due date, and potentially other penalties depending on the circumstances. For a taxpayer who has been receiving notices for a year or two without acting, the balance on the CP504 may be 30% to 50% higher than the original tax that was assessed.
For a Nassau County or Suffolk County taxpayer who received an audit assessment two years ago and set aside the resulting notices, the CP504 balance may represent a figure that feels impossible. It is not impossible. But it will not decrease. Every day the balance is outstanding, interest accrues. Every month, the Failure to Pay penalty continues (until it caps). The balance shown on the CP504 is going up, not down.
What the IRS Does Next
The IRS's typical timeline from CP504 to LT11 is 30 to 60 days, though there is no fixed schedule. The IRS moves when it moves. In some cases, particularly where the balance is substantial or where the account has been in the collection queue for a long time, the LT11 may follow the CP504 quickly.
The LT11 triggers the 30-day CDP window — the last meaningful opportunity to halt collection before active levy begins. If the LT11 follows the CP504 by 30 days, a taxpayer who does nothing after receiving the CP504 may have only 60 days total before the IRS begins taking wages and bank accounts.
This timeline compresses even further for taxpayers who receive mail unreliably or who have an address on file with the IRS that is not current. The LT11 may be sent, the 30 days may run, and the levy may begin before the taxpayer even knows the LT11 was issued.
Long Island Taxpayers and the Avoidance That Makes It Worse
The Nassau County and Suffolk County taxpayers I have represented who came to me holding a CP504 — with the 30 to 60-day window to the LT11 still open — were in a fundamentally better position than those who came to me after the LT11 window had also closed.
With a CP504 in hand and an attorney engaged, there is still meaningful room to structure a response, request a CDP hearing, demonstrate financial hardship specific to the costs of living on Long Island, and get ahead of the enforcement sequence. Once the LT11 window closes, those options narrow significantly.
The avoidance pattern — receiving the CP504, feeling overwhelmed, setting it aside — transforms a difficult situation into a crisis. It converts a 60-day window into zero days. It takes a situation where intervention is still possible and turns it into one where you are responding to active enforcement rather than preventing it.
Why Hiring a Long Island Tax Attorney Is Different From a CPA or National Tax Resolution Firm
When you are holding a CP504 with days running before the LT11, speed matters and legal authority matters.
A CPA or accountant can tell you what you owe and help you understand the balance. They cannot request a CDP hearing, represent you before the IRS Office of Appeals, or file in Tax Court. The legal enforcement sequence set in motion by the CP504 requires legal representation to navigate effectively.
A national tax resolution firm will take your call. Their intake process may take days that you cannot afford to spend. The case manager eventually assigned to your file will not have the urgency this situation demands, the legal authority it requires, or the local knowledge to account for the specific financial reality of Nassau County and Suffolk County life.
A Long Island tax attorney based in Nassau County is what the CP504 situation requires:
Immediate action. The window between the CP504 and the LT11 is short. I know what needs to happen immediately and I move accordingly.
Full legal authority. CDP hearings. IRS Appeals. Tax Court. Every legal tool available to halt or challenge the enforcement sequence requires an attorney.
Local financial reality. Nassau County and Suffolk County living costs are among the highest in the country. I know how to document that reality in a way that affects the IRS's analysis of your situation.
Direct accountability. I am in Garden City. You can reach me. This is not a 1-800 number.
Call Before the Next Notice Arrives
The LT11 is coming. The timeline from CP504 to active levy — if nothing changes — is measured in weeks, not months.
The Tax Problem Law Center, an IRS and NYS tax law firm, is based in Garden City and represents individuals and business owners throughout Nassau County, Suffolk County, and New York State in IRS collection matters at every stage, from CP504 response through full resolution.
Contact our office to speak to an experienced tax lawyer near you. You will speak directly with Long Island tax attorney Charles Rosselli. Not a case manager. Not a call center. Let's assess your situation and figure out what needs to happen before the next notice arrives.