![IRS Notice CP01A - The IRS Assigned You an Identity Protection Personal Identification Number (IP PIN) | H&R Block IRS Notice CP01A - The IRS Assigned You an Identity Protection Personal Identification Number (IP PIN) | H&R Block](https://www.hrblock.com/tax-center/wp-content/uploads/2017/09/CP01A.png)
IRS Notice CP01A - The IRS Assigned You an Identity Protection Personal Identification Number (IP PIN) | H&R Block
![Troubleshooting 940/941 e-file reject error: 5-digit PIN & 6-digit EFIN combination is not valid signature Troubleshooting 940/941 e-file reject error: 5-digit PIN & 6-digit EFIN combination is not valid signature](https://km-ext.ebs-dam.intuit.com/content/dam/km/external/pcg/r1/3201-3400/EFIN_PIN_screen.png)
Troubleshooting 940/941 e-file reject error: 5-digit PIN & 6-digit EFIN combination is not valid signature
![16th Calendar with Pins and Gold Coins. Payroll or Tax Concept. Stock Illustration - Illustration of budget, money: 141733375 16th Calendar with Pins and Gold Coins. Payroll or Tax Concept. Stock Illustration - Illustration of budget, money: 141733375](https://thumbs.dreamstime.com/z/th-calendar-pins-gold-coins-payroll-tax-concept-d-render-illustration-isometric-circled-payday-day-income-forms-141733375.jpg)
16th Calendar with Pins and Gold Coins. Payroll or Tax Concept. Stock Illustration - Illustration of budget, money: 141733375
![IRSnews on Twitter: "An #IRS IP PIN is a 6-digit number to help prevent the misuse of your information on fraudulent tax returns. To learn more or to sign up visit: https://t.co/VKD301xplR IRSnews on Twitter: "An #IRS IP PIN is a 6-digit number to help prevent the misuse of your information on fraudulent tax returns. To learn more or to sign up visit: https://t.co/VKD301xplR](https://pbs.twimg.com/media/EwH_vp_XIAsYuvK.jpg)