Thrift Savings Plan (TSP) Frequently Asked Questions Click here for account information, current rates, and to change fund allocation. Click here to change the amount you are contributing to TSP. What are the current rates of return? How do I change my TSP contributions? (only during open seasons, Employee Express) How do I change my TSP fund allocations/interfund transfers? (TSP website) How do I stop my TSP contributions? (Employee Express) How do I get a TSP loan? How do I rollover my retirement contributions from other plans? What are my investment options? What are my TSP account withdrawal options?  How will Leave Without Pay (LWOP) affect my TSP account? How do I designate beneficiaries for my TSP account? How do I change my address with TSP? How do I get a TSP PIN number? If you have forgotten your PIN, you can get a new one through the TSP Account Access area of this site or by calling the ThriftLine 1-877-968-3778.