From the left menu>Federal>Wages & Income>Job (W-2) click Edit/Add will take you to the spot in TurboTax to adjust wages
Scroll down to Box 12. Underneath the first row, click on +Add another row and you can add Box 12b.
The order of entering the boxes for 12a, 12b, 12c etc does not matter. Match the capital letter code to the amount listed. For example, if it says 12a D, then enter D. Make sure the Box 12 Code D matches across to the income listed.
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