The current TSP open season ends June 30, providing the last opportunity this year for investors under the FERS system to make sure they have their investments structured so that they get the maximum government contribution. Investors under the FERS system may invest 14 percent of salary and those under the CSRS system may invest 9 percent, up to the tax code dollar cap of $13,000. Investors under the FERS system who are making $92,857 or more this year may need to adjust their investments to make sure they continue investing at least 5 percent of salary-the level that produces the maximum government contribution-through the remaining pay periods of this year. If they hit the dollar cap earlier, their contributions shut off and so do the government matching contributions the government makes for FERS investors (the automatic 1 percent of salary contribution for FERS employees would continue, however). The cutoff isn’t a concern for those under CSRS since they don’t get any government contributions.