A CP504B notice is the business-entity version of CP504 — a formal Notice of Intent to Levy under IRC section 6331(d), sent to businesses rather than individuals.
What Triggered This Notice
The IRS has not received payment for taxes owed by the business. This notice is required before the IRS can levy business property.
Your Deadline
You have 30 days from the date of the notice to call and make payment arrangements before the IRS can levy.
What Happens If You Miss It
If the IRS does not receive payment or hear from you within 30 days, it may levy business assets, personal assets (including vehicles and real estate belonging to responsible parties), and other income. You have the right to request an appeal under the Collection Appeals Program (CAP) by filing Form 9423 within 30 days.
What To Do
Call the number on the notice immediately or file Form 9423 to request a CAP appeal before the 30-day window closes. If the business cannot pay in full, financing that pays the IRS directly can resolve the balance and stop the levy before it happens — see business tax debt financing.
Source: IRS.gov — Understanding Your CP504B Notice
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