![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
Taxtore - What is an IP PIN? An Identity Protection Personal Identification Number (IP PIN) is a six-digit number that prevents anyone from filing a tax return using your Social Security number.
![IRSnews on Twitter: "An IP PIN is a six-digit code that helps prevent identity thieves from filing fraudulent tax returns using your personally identifiable information. Sing up with #IRS at: https://t.co/VKD301xplR https://t.co/riFNzaam1C" / IRSnews on Twitter: "An IP PIN is a six-digit code that helps prevent identity thieves from filing fraudulent tax returns using your personally identifiable information. Sing up with #IRS at: https://t.co/VKD301xplR https://t.co/riFNzaam1C" /](https://pbs.twimg.com/media/ExbCYdaWEAcby2m.jpg)
IRSnews on Twitter: "An IP PIN is a six-digit code that helps prevent identity thieves from filing fraudulent tax returns using your personally identifiable information. Sing up with #IRS at: https://t.co/VKD301xplR https://t.co/riFNzaam1C" /
![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-213x300.png)