What administrative fees do I pay for investing in the TSP?

The G, S, I and F Fund returns are reduced by administrative costs that typically range annually from about $0.15 to about $0.30 for every $1,000 invested. That is well below typical costs of other types of investment funds, even index-based ones.

Returns of the L funds reflect the charges against the five basic funds, in proportion to their share within each L Fund portfolio. There is no additional administrative fee for the L Funds.