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New Member
posted Jun 4, 2019 4:45:28 PM

What does box 12a- S mean on w2

I think it is my 401-K contribution but how do I know?

0 2 1947
2 Replies
Expert Alumni
Jun 4, 2019 4:45:30 PM

It is a retirement plan contribution, but it technically is not a 401-K (that would be a symbol D).  This contribution is from a SIMPLE or a SEP plan.  For more information on box 12 codes, please see this FAQ:  https://ttlc.intuit.com/replies/3300234

Level 15
Jun 4, 2019 4:45:31 PM

Code S is for an elective deferral to a SIMPLE IRA only, not a SEP-IRA.

Enter the code S amount only on TurboTax's W-2 form.