re: Borrowing from your 401K

This, I'm using a 401K loan to pay back student loan debt. I don't care what B-School you went to if you are paying yourself 4% that's a lot better than paying someone else 8%. The fact that your using post tax dollars is irrelevant. You'll be using post tax dollars either way. In my case it will save me $15K in total payments. There are certainly occasions where a 401K loan is acceptable under the assumption you can make the payments and don't default.