also, it is strange that

来源: 于 2010-03-23 18:44:06 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

one W2 has SDI item but not VPDI, and one W2 has VPDI but no SDI. why two companies are different on the terms? Are they basically the same thing? or different?

I know SDI is deductible, but not sure about VPDI.