Thrift Savings Plan withdrawal rules turn on 4 age thresholds, and every rule below was verified on 10 September 2026 against IRS Topic 558 and the plan’s own withdrawal pages. Most coverage of this subject names 1 of those thresholds and stops, which is why federal readers routinely believe a penalty applies to them when it does not.
The thresholds interact with each other and with whether the money stays inside a retirement account at all. That last distinction does more work than any of the ages.
What age can I withdraw from my TSP without penalty?
Age 59 1/2 is the general answer, and for a large share of federal and military readers it is the wrong one. The IRS imposes a 10% additional tax on early distributions from a qualified retirement plan taken before age 59 1/2, and then lists exceptions that matter enormously to this particular audience.
The default age, with no exception applied
If you separate in or after that year
Qualified public safety employees
The age 55 separation exception
IRS Topic 558 exempts distributions made to you after you separated from service with your employer after attainment of age 55. A federal employee who retires at 55 or later can therefore draw on the TSP without the 10% tax, whatever their age at the time of the withdrawal.
The condition is about when you left rather than when you withdraw, and it attaches to the employer plan rather than to you. Roll the balance into an IRA and the exception does not travel with it, because an IRA is not the plan you separated from. Somebody who separates at 55, moves everything to an IRA, and then needs money at 57 has converted a penalty-free withdrawal into a penalised one by doing the rollover first.
If a move out of the plan is under consideration, the custodian’s fee schedule and what it will accept matter more than the pitch.
See which custodians take a TSPThe public safety exception at age 50
This is the threshold most often missed, and it covers a large share of the federal workforce. IRS Topic 558 provides that a qualified public safety employee in a governmental plan is exempt from the 10% tax where they separated from service during or after the year they attained age 50, or reached 25 years of service under the plan, whichever is earlier. Firefighters are covered by a parallel provision on the same terms.
Federal law enforcement officers, firefighters, air traffic controllers and others under special retirement provisions frequently separate well before 55, and many of them assume a penalty applies for the years between. On the IRS’s own wording it does not, provided the separation year and the service condition are met.
Required minimum distributions
At the other end, the plan stops being optional. Required minimum distributions begin at age 73 for participants born between 1951 and 1959, and at age 75 for anyone born in 1960 or later, under SECURE 2.0. Roth balances inside the TSP are no longer subject to RMDs during the owner’s lifetime.
An RMD cannot be rolled over. Anyone planning a rollover in a year they are already subject to one has to take the distribution first, and the amount that comes out is taxable in that year regardless of where the rest of the balance goes.
The trap in life expectancy installments
Installments calculated on life expectancy are one of the recognised exceptions to the 10% tax, which makes them attractive to somebody retiring early. The plan attaches a condition that is easy to read past.
tsp.gov states the penalty can be applied retroactively if you stop life expectancy installments, or take additional money from the account, within 5 years of beginning them or before you turn 59 1/2. So the exception is conditional on behaviour years into the future, and a participant who starts installments at 52 and takes a lump sum at 55 for an emergency can owe the 10% on everything drawn up to that point, not only on the lump sum.
Rollovers are not withdrawals
None of the ages above apply to money that never leaves the retirement system. The IRS is explicit that distributions rolled over to another qualified retirement plan are not taxable and are therefore not subject to the 10% additional tax. A direct rollover has nothing withheld at all.
That distinction is the one worth carrying away, because it separates two decisions people routinely merge. Moving a TSP balance into a self-directed IRA holding bullion is a rollover, taxed at nothing and penalised at nothing, with the purity rules of section 408(m) and an approved depository applying afterwards. Selling out of the TSP and taking the cash to buy metal personally is a distribution, taxable in that year, and penalised at 10% if no exception fits.
Which metals a self-directed IRA can actually hold once a rollover lands, and who has to hold them, is on TSP to gold IRA.
Our read
The age rules reward staying inside the system and punish leaving it, which is a design choice rather than an accident, and it cuts against the way rollovers usually get sold. A reader who takes away only 1 thing should take the age 55 point: rolling a balance out of the TSP before 59 1/2 can forfeit an exception that only exists inside the plan you separated from.
The other half of the picture is what the money does while it waits. The G Fund, where separated participants most often park a balance, returned 0.43% a year after inflation between 2003 and 2026, so avoiding a penalty and preserving purchasing power are not the same achievement.