What Does a CP504B Notice Mean?
CP504B is the IRS notice sent when a business taxpayer has outstanding tax debt and has failed to respond to prior notices. It serves as a “final notice” before the IRS moves to seize (levy) business assets or rights to property.
- Shows the total amount due (owed, penalties, and accrued interest).
- Includes a payment deadline and payment options.
- States IRS intent to levy - that is, seize business bank accounts, receivables, inventory, equipment, or other business property if unpaid.
Why You Received a CP504B
CP504B is sent when prior IRS notices about unpaid taxes were ignored or not addressed, and the tax balance remains unpaid. It signals that the IRS is escalating collection efforts against a business taxpayer.
- Business tax debt remains unpaid despite earlier notices.
- IRS determined prior collection attempts failed, and is now preparing to levy business property or receivables.
- The amount owed has accrued penalties and interest over time.
How to Respond to CP504B
If you receive a CP504B, it is critical to act immediately - ignoring it may trigger the IRS to start seizing business assets, bank accounts, or receivables.
- Review the Notice Carefully: Confirm the tax period, amount owed, and ensure it matches your own business records.
- If You Agree With the Debt: Pay the full balance immediately - online or by check/money order.
- If You Can't Pay in Full: Contact the IRS right away to request a payment plan or alternative arrangements.
- If You Disagree With the Notice: You may dispute the liability, file for a collection due process hearing, or submit documentation to correct any errors.
- Keep Good Records: Save a copy of the notice, payment receipts, correspondence, and any proof if you believe payments already made.
When You Should Contact a Tax Professional
CP504B is often the last formal warning before the IRS begins asset seizure - business bank accounts, equipment, inventory - or files a lien. If you're unsure about your next steps, mistakes could be costly.
- You believe the amount, penalties, or interest are incorrect
- You can't pay the full amount but want to avert a levy or lien
- You need representation (e.g. Power of Attorney) to negotiate with IRS on your behalf
- You want to explore relief options (installment plans, penalty abatement, compromise, etc.)
