Hey guys, my wife and I have pretty good salaries but also have a good bit of student loan debt. We are aggressively paying off the student loan debt, which has interest rates between 4-5%. I'm sure this has been covered before, but I was thinking the other day that maybe we should slow down the loan payments to max out our 401ks and her 457. The primary reason is that most of the dollars going to pay the student loans are being taxed at 25% and 28%. Obviously I don't know what the future will hold as far as taxation, but if I intend to retire in say, 10 years, and live off 30-40k per year, and assuming hypothetically that those dollars are taxed in the 10-15% range, wouldn't it make sense mathematically to defer all dollars I can from the 25-28% range, even at the expense of slower loan repayment? I know I can't guarantee that the investments won't lose value, so there's that, but even if I stuck the money into bond funds or something, I'd be saving 13-18% on taxes. Thoughts?