A CP09 notice is sent by the Internal Revenue Service (IRS) to taxpayers who may be eligible for the Earned Income Credit (EIC) but did not claim it on their tax return. The EIC is a credit for certain people who work and have earned income. The credit may give you a refund even if you do not owe any tax.

A CP14 notice is a letter sent by the IRS when they have made changes to your income, deductions, and credits on your tax return. This usually happens when the IRS believes there’s a miscalculation on your tax return. As a result of these changes, you owe money on unpaid taxes.

A CP05B notice is issued by the IRS when they receive a tax return that shows a refund amount, but they can’t determine if the income reported on the tax return matches the income reported to them by payers. The IRS is holding your refund until they receive the additional information they requested from you to determine if the income is correct before they can release your refund.

A CP04 notice is sent by the IRS to individuals who have served in a combat zone, a qualified contingency operation, or a hazardous duty station during the tax year specified on the notice. This notice indicates that you or your spouse may be eligible for tax deferment due to this service.

A CP11 notice is a letter sent by the IRS when they have made changes to your income, deductions, and credits on your tax return. This usually happens when the IRS believes there’s a miscalculation on your tax return. As a result of these changes, you may owe money.

A CP12 notice is a letter sent by the IRS when they have made changes to your income, deductions, and credits on your tax return. This usually happens when the IRS believes there’s a miscalculation on your tax return. As a result of these changes, you may be due a refund.

A CP01 is a notice you receive from the IRS that confirms your claim of identity theft. This notice is part of the IRS’s efforts to protect taxpayers and prevent fraudulent activity on their tax accounts.

A CP01A notice is sent by the Internal Revenue Service (IRS) to taxpayers who have been assigned an Identity Protection Personal Identification Number (IP PIN). This IP PIN is a unique 6-digit number that helps prevent unauthorized individuals from filing a federal tax return using your Social Security number or Individual Taxpayer Identification Number.

A CP01H notice is issued by the Internal Revenue Service (IRS) when they receive a tax return that contains a Social Security number (SSN) for an account that they locked because their records indicate the Taxpayer Identification Number (TIN) belongs to an individual who died prior to the tax year of the return submitted.

A CP16 notice is a letter sent by the IRS when they have made changes to your income, deductions, and credits on your tax return. This usually happens when the IRS believes there’s a miscalculation on your tax return. As a result of these changes, you owe money on unpaid taxes.