New rules make it easier to leave money in the low-cost Thrift Savings Plan. Getty Images By Kimberly Lankford, Contributing Editor February 1, 2018From Kiplinger's Personal Finance A new law will benefit federal employees and members of the military who want to keep their money in the low-cost Thrift Savings Plan when they retire. The TSP has low fees, but it has frustrated savers with its strict withdrawal rules: After you take one partial withdrawal, you can access the remaining balance only by cashing out the entire account, converting it to a life annuity, or taking a series of monthly payments that you can change only once a year.See Also: Best Rewards Credit Cards for Travel The new law eliminates the restriction on partial withdrawals and lets participants set up and change regular payments throughout the year. The Federal Retirement Thrift Investment Board, which runs the TSP program, has up to two years to enact the new rules. “This is great news for all TSP account holders,” says Didi Dorsett, a certified financial planner with Safe Harbor Financial Advisors, in Occoquan, Va. Many of her military and federal-employee clients have been rolling their TSPs into IRAs at retirement so they could have more control over withdrawals, even if it meant paying higher investment fees than they would have in the TSP. Until the regulations are finalized, it’s a good idea to postpone rolling a TSP into an IRA or making other long-term withdrawal decisions, says Josh Andrews, director of military life advice for USAA. For more information and updates on withdrawal rules, go to tsp.gov.