The first term is where the largest, cheapest wins are available, because everything here compounds for thirty or more years. It is also where they are most often missed, since nothing on this page has a deadline that anyone will chase you about.
Two items on this page are worth more than the rest combined: getting the TSP contribution to at least 5% before the match window opens, and making sure the people you would want to receive your death benefits are the people actually named on the forms.
The rest of this chapter is about why those two sit where they do, and what the failure actually looks like when it happens — because in both cases it is silent. Nobody writes you up for a 3% contribution rate, and nobody notices a stale beneficiary form until the one moment it matters.
Under the Blended Retirement System the government contributes on two separate tracks, and they start on different clocks. The automatic 1% of basic pay begins after 60 days of service and requires nothing from you. The service matching contribution begins at two years of service and is earned only against what you put in: dollar for dollar on your first 3% of basic pay, then fifty cents on the dollar for the next 2%. A member contributing 5% therefore collects the full 4% match on top of the automatic 1%. A member contributing 3% collects a 3% match, and the half-rate match on the two percentage points they did not contribute — one further percent of basic pay every pay period — is simply never paid.
The word that does the damage in that arithmetic is per pay period. Matching is computed on each period’s contribution and posted with it. There is no annual reconciliation and no true-up in December, so a period that passes at 0% or 3% is closed. This is different from an IRA, where a contribution made in April can be attributed to the prior tax year, and the difference catches people who have applied IRA habits to a payroll plan.
That is the mechanical reason first-term dollars are the most expensive money in a military career, but it is not the whole reason. A dollar contributed in year two carries the longest compounding exponent of any dollar you will ever contribute, and the agency money attached to it compounds on the same schedule. The projection tool on this site applies whatever average annual return you set, and no return assumption changes the ordering: the earliest contributions dominate the final balance regardless of the rate you believe in. The corollary is uncomfortable — raising the rate at year eight does not recover year two, it only stops the bleeding.
The vesting rules run on a third clock again. Your own contributions and their earnings are yours from the moment they are deducted, and so are the matching contributions. The automatic 1% is the piece that vests at two years of service, which is a live consideration for anyone whose first term may end early. Confirm your own vesting position against your TSP account statement rather than against what a colleague tells you, because service and break-in-service histories vary.
None of this applies if your DIEMS date placed you under Legacy High-3. That system pays no agency contributions at all, which changes the first-term task rather than removing it. The Legacy multiplier is 2.5% of High-3 per creditable year against the Blended system’s 2.0%, so more of the eventual retirement sits in the pension and less in the account — and the account only grows from money you put there yourself. Check which system you are in on your records rather than assuming; DIEMS is assigned, not elected, and it is not renegotiated by anything you do later.
The ceiling is unlikely to be your constraint here. For 2026 the elective deferral limit is $24,500, which at first-term basic pay is well above what most people can reach. The real constraint is cash flow, and that is the honest reason a rate stays at 3%. It is also why the debt paragraph belongs in this chapter rather than a later one: an auto loan signed in year one competes directly with the match, and it usually wins, because the loan has a due date and the match does not.
Junior service members are a specifically targeted market for high-cost credit. The Military Lending Act caps the Military Annual Percentage Rate at 36% on covered credit, which tells you plainly what the market looked like before the cap existed. A funded emergency account and your service relief society — which lends without interest for genuine emergencies — are what make it possible to decline an offer rather than take the best of a bad set. Ask the installation Personal Financial Manager to check a specific offer against the cap before you sign it; the counseling is free and does not require you to bring your whole financial picture.
The second half of this chapter is a different kind of risk. Death benefits do not pass under your will. SGLI, the TSP account, and the death gratuity pass by contract to the person named on each form, and each form is a separate designation with its own record. A will that says one thing and an SGLI designation that says another is not a conflict the insurer resolves in favour of the will — the named beneficiary is paid.
The instinct that this must self-correct after a divorce is the specific belief that costs families the most. Many states have a statute revoking an ex-spouse’s beneficiary status automatically on divorce, and for SGLI the Supreme Court held in Ridgway v. Ridgway, 454 U.S. 46 (1981), that federal law preempts those statutes, so the named beneficiary takes even against the terms of a divorce decree. Hillman v. Maretta, 569 U.S. 483 (2013), reached the same result for federal employee life insurance. Whether the identical preemption analysis binds the TSP rests on lower-court authority rather than a Supreme Court holding, which is a distinction to raise with a lawyer rather than resolve from a web page. Installation Legal Assistance is free to service members; ask them to review every designation you hold against your will and your decree, and to tell you which of the two documents actually controls each account.
Naming a minor child directly carries a separate problem. Insurance proceeds paid to a minor can require a court-supervised guardianship of the money rather than a clean transfer to the person raising the child, and the fix — a trust or a custodial arrangement — has to be built before it is needed. This is a question for legal assistance and it takes one appointment.
The last thing forming in this window is the re-enlistment decision, and it forms long before anyone asks you about it. Whether you are offered a bonus, a commissioning program or a preferred assignment at the four-year point is decided by the evaluations, qualifications and certifications accumulated between now and then. Most people who serve never reach twenty years, and separating at the end of a first term is an ordinary outcome rather than a failed one. The work of this chapter is to make sure that whichever way that decision goes, it is made with the match already captured and the forms already correct.
Checklist
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Set the TSP contribution to at least 5%
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Caution: Agency matching contributions are calculated each pay period. A pay period that passes below 5% cannot be matched later.
Set your TSP contribution to 5% or more of basic pay. Do this before you complete two years of service.
- Open myPay and select TSP contributions.
- Set the traditional or Roth election to 5% or more of basic pay.
- Confirm the change on your next Leave and Earnings Statement.
Name your beneficiaries on every form that has one
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Warning: A beneficiary designation overrides your will. An out-of-date form can pay your death benefit to a former spouse instead of your current family.
Review the beneficiary on your SGLI, your TSP account, and your DD Form 93. Correct any form that names the wrong person.
- Review SGLI beneficiaries in SGLI Online Enrollment System (SOES).
- Review the TSP beneficiary designation in your TSP account.
- Review DD Form 93 with your unit personnel section.
- Repeat this review after each marriage, divorce, or birth.
Build an emergency fund before you borrow
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Note: Installations offer free financial counseling, and Military Relief Societies offer interest-free emergency loans.
Save one month of expenses first. Then increase the fund to three months.