TSP-75 age-based in-service withdrawal

Updated: July 28, 2026

OPRS may receive compensation when readers open an account through partner links on this page. Our analysis is based on independent research, BBB data, and IRS publications.

The Thrift Savings Plan held a $782 billion aggregate balance across 6.7 million participants at the most recent Federal Retirement Thrift Investment Board annual report. The cohort that crosses age 59½ while still in federal or uniformed service is the one that holds the TSP-75 option.

The form is now an online “Age-Based In-Service Withdrawal” flow inside the tsp.gov withdrawal wizard. Paper Form TSP-75 was retired with the September 2019 Modernization Act rollout.

This flow lets a participant move money out of the TSP without leaving federal service. It does not trigger the 10% additional tax under IRC §72(t), and it does not forfeit the option to keep contributing to the same TSP account afterward.

Element I of the planning sequence is the eligibility check. Three conditions must all be true before you file. You must be age 59½ or older on the date of request, in current federal or uniformed-service employment, and holding a TSP balance large enough to clear the $1,000 minimum after the withdrawal.

The downstream sequencing (rollover destination, dealer selection, basis preservation) only matters if the front-end eligibility is real. For the parallel post-separation withdrawal mechanics, see our TSP to gold IRA rollover guide for federal employees.

How we sorted these eight rules

We screened the TSP-75 source material against four references: the statutory text at 5 U.S.C. §8433(c) (the in-service withdrawal authority) and the IRS guidance on age 59½ distributions under Publication 590-B.

We also reviewed the TSP’s own withdrawal booklet at tsp.gov and the legislative record of the TSP Modernization Act of 2017 (Public Law 115-84).

Each rule below either turns on a statutory threshold, a mechanical form requirement, or a documented error pattern in TSP participant-services case files. The order tracks how a real request unfolds, not a list of “tips” stitched from secondary sources.

Our editorial stance: the age-based in-service withdrawal is a useful planning tool for participants who want to begin diversifying out of TSP funds before separation. Its mechanics are subtle in three places: the Roth 5-year clock, combat-zone basis preservation, and federal-contractor eligibility confusion.

The eight rules below are the most critical ones. They are not exhaustive; they are where we have seen otherwise-careful participants stumble.

Rule 1: you must be age 59½ and still in federal or uniformed service

The age-based in-service withdrawal authority in 5 U.S.C. §8433(c) requires two simultaneous conditions: the participant has attained age 59½, and the participant is currently a federal civilian employee or member of the uniformed services. A participant who has separated from federal service no longer qualifies for the age-based in-service variant; the post-separation withdrawal rules apply instead, with a different form sequence and a different set of eligible distribution options.

Our take: the most common eligibility error we see is the federal contractor confusion. A retired military member or former civil servant now working for Lockheed Martin, Booz Allen, SAIC, or a similar contractor is no longer “in service” for TSP purposes. This holds regardless of whether the contract supports a federal mission.

The contractor 401(k) plan is the active employer plan; the TSP balance is a post-separation residual. For the consolidated rollover path that applies in that scenario, see our contractor 401(k) plus TSP consolidation guide.

Rule 2: paper Form TSP-75 was retired in 2019; the request now runs through the online wizard

The paper Form TSP-75 (Age-Based In-Service Withdrawal Request) was decommissioned alongside TSP-70, TSP-77, and TSP-90 when the TSP transitioned to its electronic withdrawal wizard on September 15, 2019. The request is now filed in the participant’s tsp.gov account under Withdrawals and Changes to Installment Payments, with two-factor authentication and spousal consent (if applicable) routed through the same flow.

Where this matters: the form number “TSP-75” still appears in financial-advisor checklists, military transition briefings, and dealer pitch decks. A dealer who hands a participant a paper TSP-75 to sign in 2026 is either working from out-of-date material or attempting to slow-walk the request through a paper channel the TSP no longer processes.

The online wizard is the only operative channel. Best for: anyone who has not logged into tsp.gov in the last two years and assumes the form catalog is unchanged.

Rule 3: the $1,000 minimum and 30-day interval apply to each request

Each age-based in-service withdrawal must be at least $1,000 (the participant cannot drain a sub-$1,000 residual via this channel), and the TSP requires a 30-day minimum interval between requests. The participant can submit an unlimited number of requests over time, subject to those two constraints and to the available balance in the chosen source (traditional, Roth, or both).

The trade-off: the unlimited-partial structure is a meaningful upgrade from the pre-Modernization Act one-per-lifetime cap, but it tempts participants into frequent small rollovers rather than a single larger one. Each rollover carries dealer fees, custodian transaction charges, and a 1099-R reconciliation step in January.

We recommend planning partial withdrawals as a small number of larger transfers (one to three over a 12-month window) rather than a stream of monthly small ones, unless you have a specific cash-flow reason. See the parallel cadence discussion in our TSP Modernization Act partial withdrawals guide.

Rule 4: direct rollover or cash distribution: the 20% withholding rule cuts here

Each age-based in-service withdrawal can be routed three ways. You can do a direct trustee-to-trustee transfer to a traditional IRA, a direct trustee-to-trustee transfer to a Roth IRA (for the Roth TSP portion), or a cash distribution paid to you.

The cash distribution path triggers the 20% mandatory federal withholding under IRC §3405 on the taxable portion. The direct rollover path produces a 1099-R with Distribution Code G and a $0 taxable amount.

Where this shines: your plan may be to use the age-based in-service withdrawal to fund an IRA-held position in IRS-approved metals. Those are gold .995+, silver .999+, and platinum and palladium .9995+, per IRC §408(m). In that case, the direct rollover path is the only one that preserves the full balance for purchase.

The cash distribution path leaves 20% of the taxable portion with the IRS until the following April. Making it up from outside funds inside the 60-day rollover window is mechanically possible, but it adds an avoidable reconciliation step.

Rule 5: the source allocation choice (traditional, Roth, or both)

The TSP withdrawal wizard lets you specify whether each age-based in-service withdrawal comes from the traditional balance only, the Roth balance only, or proportionally from both. The default is proportional.

For a participant with both balances and a planning preference for which side moves first, use the explicit-source option. The proportional default can complicate downstream basis tracking if combat-zone basis is present (Rule 6) or if the Roth 5-year clock is the planning anchor.

Best for: participants who hold both traditional and Roth TSP and want to bias early withdrawals toward one side for tax-planning reasons. For example, you might draw the traditional side first to leave Roth growing tax-free longer, or draw the Roth side first to lock in qualifying-distribution status once the 5-year clock is satisfied.

The wizard makes the choice available, but you have to know the choice exists.

Rule 6: combat-zone tax-exempt basis must be tracked through the rollover

Service members who contributed traditional TSP from combat-zone tax-exempt pay (excluded from gross income under IRC §112) built basis in their traditional TSP balance. The principal of that basis is not taxed at distribution because it was never taxed at contribution; only the earnings on the principal are taxable. The TSP tracks this layer separately on the participant’s quarterly statement.

Our take: the age-based in-service withdrawal does not automatically pull from the tax-exempt layer first. If the participant wants to preserve that basis (which we usually recommend, because it grows tax-free in the same way Roth basis does), the source-allocation option in the wizard should specify the traditional non-tax-exempt sub-allocation. For the deeper basis-preservation walk-through, see our TSP combat-zone tax-exempt contributions rollover guide.

Rule 7: the Roth 5-year clock does not transfer with a Roth TSP rollover

The Roth TSP 5-year qualifying-distribution clock tracks at the plan level under IRC §408A. It conditions tax-free distribution of earnings on the account having existed at least five years.

When a Roth TSP balance rolls into a Roth IRA via an age-based in-service withdrawal, the Roth IRA’s own 5-year clock applies. That clock can be earlier or later than the Roth TSP clock.

Where this matters: a participant who has never funded a Roth IRA before, and opens one specifically to receive the rollover, starts a fresh 5-year clock on that account.

If qualifying distribution status matters within the next five years, the rollover destination should be an existing Roth IRA whose clock already cleared the 5-year window. You may be drawing earnings rather than just basis, which makes the clock gap consequential.

Skip this rule if you have no Roth TSP balance or if your Roth IRA was opened more than five tax years ago.

Rule 8: the 10% additional tax is waived, but only because of the age threshold

The 10% additional tax on early distributions under IRC §72(t) does not apply to an age-based in-service withdrawal because the participant has already met the age 59½ threshold in §72(t)(2)(A)(i). The waiver is mechanical and automatic; the participant does not need to claim an exception code on Form 5329.

The trade-off: participants under age 59½ sometimes ask whether the age-based variant can be used early under one of the other §72(t) exceptions. Examples include the public-safety officer exception at age 50 and substantially equal periodic payments under §72(t)(2)(A)(iv). The answer is no: the TSP-75 channel is statutorily limited to age 59½+ participants.

The under-59½ participant who wants an in-service withdrawal has to use the financial-hardship withdrawal channel (with its own narrower eligibility) or wait for the age threshold. For the public-safety-officer parallel, see our PSO §72(t) age 50 exception guide.

The eight-step procedural sequence at a glance

Stacking the eight rules above into a single procedural sequence produces the flow below. The diagram is the planning artifact most participants find easier to reason about than the narrative version.

What we did not include in this list

Three adjacent rules show up in some TSP planning guides but are not part of the age-based in-service withdrawal mechanics proper:

Spousal consent rules. Federal Employees Retirement System (FERS) and uniformed-service participants generally need spousal consent on a withdrawal that reduces the balance below specific thresholds, routed through the same wizard. The rule exists, but it is a procedural notification step rather than a planning lever; we treated it as part of the wizard flow rather than as a distinct rule.

TSP loan interaction. An outstanding TSP loan affects post-separation withdrawals but does not constrain an age-based in-service withdrawal directly; the loan remains outstanding through the partial withdrawal. The trap is the post-separation deemed-distribution scenario, which we cover separately in our TSP loan rollover deemed distribution trap guide.

BRS (Blended Retirement System) matching. Uniformed-service members who opted into BRS after January 1, 2018 receive agency matching contributions; those continue uninterrupted by an age-based in-service withdrawal because the participant is still in service. The match is not at risk from the partial withdrawal itself.

Frequently asked questions

Does an age-based in-service withdrawal stop my future TSP contributions?

No. The age-based in-service withdrawal removes a portion of the existing balance; it does not affect the participant’s contribution elections, agency matching (for FERS or BRS participants), or future contribution eligibility. A participant can submit an age-based in-service withdrawal and continue making payroll deductions to the same TSP account in the same pay period.

Can I take an age-based in-service withdrawal while deployed?

Yes, provided the participant is still in uniformed service and has attained age 59½. The wizard request can be initiated from any location with tsp.gov access; the spousal-consent step (if applicable) may require a notarized form, which is the practical constraint during deployment. Combat-zone status does not by itself preclude the age-based in-service withdrawal, although a separate financial-hardship channel exists for participants in combat-zone duty.

How does the age-based in-service withdrawal interact with the TSP Modernization Act partial-withdrawal limits?

The age-based in-service withdrawal and the post-separation partial withdrawal are two different channels under the same Modernization Act framework. Both allow unlimited partial withdrawals subject to the $1,000 minimum and 30-day interval.

The age-based channel is only available while you are in federal or uniformed service. The post-separation channel is only available after separation. They do not consume each other’s allotment.

Is there a way to roll the entire TSP balance via the age-based channel without separating?

Yes, by submitting a sequence of partial age-based in-service withdrawals that together equal the full balance, spaced 30 days apart and each at least $1,000. This is mechanically possible but not the typical pattern; most participants planning a full rollover wait until separation to avoid the multi-request sequencing. The combat-zone basis preservation question in Rule 6 becomes more complex over a multi-request rollover than a single one.

What 1099-R coding should I expect on a direct rollover from the age-based in-service withdrawal?

Distribution Code G (direct rollover) with a $0 taxable amount in Box 2a, gross amount equal to the rollover in Box 1, and the receiving custodian’s name in the payer information section. If any Roth portion is included, a separate Code H may apply for the Roth-to-Roth direct rollover component. The receiving IRA custodian issues Form 5498 reflecting the rollover contribution.

Three planning artifacts should exist before you file the wizard request. First, a one-page summary of your traditional, Roth, and combat-zone basis balances (from your most recent quarterly statement). Second, a named destination custodian with your destination IRA accounts already opened (traditional and Roth, if both sides are moving). Third, a dealer you have vetted against the check on gold IRA dealers.

The wizard request itself is mechanically straightforward; the planning artifacts are what prevent the basis-tracking and dealer-selection errors that the eight rules above are designed to flag.

Sources cited

1. 5 U.S. Code §8433(c) (TSP age-based in-service withdrawal authority)
2. IRS Publication 590-B (Distributions from Individual Retirement Arrangements)
3. 26 U.S. Code §72(t) (Early distribution penalty and age-59½ exception)
4. 26 U.S. Code §408A (Roth IRA: 5-year holding period rules)
5. 26 U.S. Code §112 (Combat-zone tax-exempt contribution exclusion and basis tracking)
6. 26 U.S. Code §3405 (Mandatory withholding on eligible rollover distributions)
7. TSP.gov: Withdrawals After Leaving Federal Service (TSPBK02)
8. TSP Modernization Act of 2017, Public Law 115-84 (expanded partial withdrawal rules)
9. Federal Retirement Thrift Investment Board Annual Reports

More on OPRS

• TSP to gold IRA rollover guide for federal employees
• TSP combat-zone tax-exempt contributions: tracking basis at rollover
• TSP Modernization Act partial withdrawals guide
• Contractor 401(k) plus TSP consolidation guide
• TSP loan rollover deemed distribution trap
• Our 2026 on gold IRA dealers