<prompt> Human: I checked out the What should I do with X money thing. After paying all my credit cards off Ill have approximately 10,000 left over. Some people are suggesting I start an index fund in Vanguard. But would it be a better idea to put all the money in my Roth TSP fund?I guess the crux of the question is, will this money grow more when combined with the 8,000 already in my Roth TSP? Thanks.  <response>: Its generally recommended to max out your retirement accounts before contributing to a taxable account. The TSP has one of the lowest expense ratios in the industry. Put the 10,000 there. 