This is the billing stage
CP220J bills an Employer Shared Responsibility Payment already assessed by the IRS. It is different from the earlier Letter 226-J proposal or Letter 227 review correspondence.
Check the amount and year
Compare the bill with your proposal, response, and any Appeals result. Follow the due date and payment instructions on CP220J. If you cannot pay the full amount, review IRS payment-arrangement options.
Unpaid assessed ESRP amounts can accrue interest and are subject to IRS lien and levy collection procedures. Do not assume that an employer health-coverage assessment is outside normal collection.
If the bill does not match your records
Gather the earlier letters and payment evidence before contacting the IRS or your representative. Identify the exact discrepancy rather than starting again with a general objection to the original proposal.