Glossary

IRS CP504C Notice warns taxpayers that the IRS will begin levying a portion of their Social Security benefits unless they resolve their unpaid tax debt.

IRS CP504F Notice is a final warning to businesses about potential asset seizure to settle unpaid tax debts, with instructions for avoiding levy actions.

IRS CP508C notifies taxpayers that their passport eligibility is in jeopardy due to seriously delinquent tax debt and provides steps to resolve the issue.

IRS CP515 Notice informs taxpayers of an unfiled tax return and provides instructions for filing to avoid further penalties.

IRS CP515B Notice notifies businesses of an unfiled return and encourages immediate action to file and avoid penalties.

IRS CP518 Notice serves as a last reminder for taxpayers to file an unfiled return, with penalties and enforcement actions detailed for non-compliance.

IRS CP518A Notice warns individuals of a missing tax return and outlines the consequences of not filing, including penalties and interest.

IRS CP521 Notice is a monthly statement for taxpayers with an installment agreement, outlining payment status and remaining balance.

The IRS CP521 Notice serves as a reminder to taxpayers that their next installment agreement payment is due and outlines the steps for making the payment.

IRS CP523 Notice alerts taxpayers that their installment agreement is in default, with instructions to prevent levies or liens.

The IRS CP523 Notice informs taxpayers that their installment agreement is in default due to missed payments or other reasons, and outlines next steps to avoid collection actions.

IRS CP523I Notice notifies taxpayers of a default in their installment agreement and warns of income levies if the account is not brought current.

The CP58 notice notifies taxpayers that they may be eligible for the Earned Income Credit (EIC) based on their tax return information.

The CP58A notice follows up on the eligibility for the Earned Income Credit (EIC), providing additional information or reminders for taxpayers.

The CP60 notice informs taxpayers that their refund has been adjusted due to underreported income or discrepancies in their return.

The CP66 notice informs taxpayers that they are due a refund, but additional verification is needed to process it.

The CP70 notice alerts taxpayers to potential issues with their tax return that could lead to a balance due or necessary adjustments.

IRS CP71 is an annual reminder that a taxpayer has an unpaid balance on their account, including a breakdown of taxes, penalties, and interest owed.

The IRS CP71 Notice serves as an annual reminder of an outstanding balance due, detailing the total owed including penalties and interest.

IRS CP71A is an annual reminder that a taxpayer has an unpaid balance, detailing the total amount owed, including penalties and interest.