ASVAB Retest Rules: Wait Times, Which Score Counts, and the Confirmation Test
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You can retake the ASVAB one calendar month after your first test, one more calendar month after that, and then only after six calendar months from each later attempt. Your newest valid score replaces the old one even when it is lower, and a jump of 20 or more AFQT points within six months sends you back to MEPS for a full confirmation test before anyone will process you.
These rules come from USMEPCOM Regulation 611-1, Enlistment Qualification Tests (effective March 18, 2024, which superseded the September 2020 edition). It is the document MEPS testing staff work from, so it settles questions that recruiter folklore and prep blogs tend to blur.
The retest calendar, with real dates
The regulation spells out its own example: initial test on 2 January, first retest allowed on 2 February, second retest on 2 March, third retest not until 2 September. A calendar month means the same date next month, not 30 days, and every retest after the second needs six calendar months from your last test date.
Two details catch people. First, any ASVAB taken within two years of a previous one counts toward this sequence, including a confirmation test and a high school test once it is used for enlistment. Second, answering even one question counts as having tested. Walking out after a bad start does not save the attempt; it spends it and starts the clock. The exceptions are narrow: an iCAT session that fails for technical reasons can be retaken immediately, and a MEPS commander may order an immediate retest after a disrupted session (the regulation's examples are a fire evacuation or an air-conditioning failure), but never simply to let someone improve a score.
Your newest score replaces your best one
There is no superscoring and no choosing your best attempt. Under paragraph 3-4, when you retest the results of the valid test become your score of record. If you hold a qualifying AFQT and retest to chase a higher line score for a particular job, a rough morning can replace a qualifying score with a non-qualifying one.
A retest is also never partial. The regulation requires a complete ASVAB on every retest, so you cannot sit only the Mechanical Comprehension or Arithmetic Reasoning section you want to raise. Every subtest, and therefore every composite your branch uses for job placement, is re-scored at once. Scores stay usable for enlistment for two years from the test date, per the official ASVAB FAQ, which is often a reason not to retest at all.
The 20-point confirmation test and the half-the-gain rule
A confirmation test is triggered when your AFQT rises 20 points or more between two consecutive tests taken within six months of each other. It does not matter whether the earlier test was a student or enlistment ASVAB, or computer or paper. The confirmation test is a complete ASVAB, given only at a MEPS, on a version you have not seen, and your processing stops until you either pass it or six months pass.
Passing does not mean matching your retest. Your confirmation AFQT can fall back by up to half the gain and still sustain it. Suppose you scored 34, then 58 a month later: the gain is 24, so a confirmation AFQT of 46 or higher passes. When you pass, the 58 becomes your score of record; the confirmation score itself is never used for enlistment. If you drop by more than half the gain, you fail, and you either process on your last valid score (the 34) or wait six months to retest, with every later retest given at a MEPS on the computer. Not showing up for the confirmation test within six months is treated the same way for where you may retest.
- The six-month window cuts both ways: the regulation applies the 20-point trigger only to tests within six months of each other, so a big gain on a retest taken later does not require confirmation.
- Because the confirmation test counts as a retest, it uses up one of the attempts in the sequence above.
High school ASVAB: when it counts and when it cannot
A score from the student testing program can be pulled for enlistment only if you were in 11th grade or higher when you tested, are at least 17, and the test is less than two years old. It cannot be used at all if an enlistment ASVAB is already in your record. Once it is used, it becomes your initial test and the retest clock above applies to it. If you took the ASVAB through School Staff Testing instead, the official FAQ says you must also pass a Verification Test before those scores count.
Tell your recruiter about every prior ASVAB, including one from school you barely remember. The briefing MEPS gives before each session warns that your test is checked against a nationwide file, and a retest on the same test version within six months is invalidated, leaving your previous score standing.
Before you book the retest
Decide what you are retesting for. If your AFQT already qualifies and you want a specific job, the retest puts the qualifying score at risk; ask your recruiter which composite you need and by how much before you schedule. If you need a large AFQT jump, plan your study around the fact that any real gain of 20 or more inside six months means another full test day at MEPS.
Practice the four AFQT subtests under the computer version's real limits, because every MEPS gives the ASVAB by computer. The official fact sheet gives 15 Arithmetic Reasoning questions in 55 minutes and 15 Word Knowledge questions in 9 minutes, with no going back and a penalty for random guessing. That makes the math sections a careful-working test and the vocabulary section a fast one. The Quibank Arithmetic Reasoning pool is the place to rebuild word-problem speed, and the ASVAB podcast episode on how the test works covers the AFQT percentile and the computer-versus-paper format in more depth.