No, you do not need a PIN number from last year to electronically file your return. The IRS changed their security verification from using a PIN number to requiring your 2018 AGI (Adjusted Gross Income). You can find your AGI:
If you used TurboTax last year you can view your 2018 AGI by selecting Documents on the left hand side of your screen. Select View Documents from: Select 2018 on the drop down menu.
OR
You can obtain a copy of last year's tax transcript online using IRS link: Transcript
OR
If you have a copy of your 2018 tax return, your AGI is located on line 7.
I have used my same PIN for several years over and over. But mine is 5 digits long.
No, you can no longer use your PIN number for security verification as the IRS did away with it. Now you are required to use your 2018 AGI (Adjusted Gross Income) for verification.
If you used TurboTax last year you can view your 2018 AGI by selecting Documents on the left hand side of your screen. Select View Documents from: Select 2018 on the drop down menu.
OR
You can obtain a copy of last year's tax transcript online using IRS link: Transcript
OR
If you have a copy of your 2018 tax return, your AGI is located on line 7.