How to enter two w2s from same job different amount

It depends.

You'll get a corrected W-2 from your employer if they made a mistake on your original W-2 and need to give you corrected information. If you're not sure if you have a corrected W-2, take a look at the bottom of your W-2. If it’s corrected, it should say Form W-2c, Corrected Wage and Tax Statement. If it doesn't say this at the bottom, you may have a second type of corrected W-2c that has a box at the top marked corrected. This box does not appear on standard (original) W-2s.

If the W-2 is corrected, you can follow these steps in TurboTax:

1. Open your tax return. 

2. Search for W-2 with the magnifying glass tool on the top of the page. 
3. Select the Jump to W-2 link at the top of the search results.
4. Select the trash can icon next to your original W-2 to remove it.
5. Click on Add a W-2.
6. Enter your corrected W-2 information.
7. Continue to the screen Let's check for uncommon situations and select W-2 was corrected by my employer.

If the second W-2 does not appear corrected and has different FEIN and State ID numbers, then add the second W-2. These identifying numbers are found in box b and box 15 on your 2020 W-2. I have attached a picture for additional guidance.

You can follow these steps in TurboTax to add a second W-2:

1. Open your tax return. 
2. Search for W-2 with the magnifying glass tool on the top of the page. 
3. Select the Jump to W-2 link at the top of the search results.
4. Click on Add a W-2.
5. Follow the on screen instructions to add your second W-2.