The MGIB line on your LES is a $100 monthly deduction for the Montgomery GI Bill Active Duty program, pulled from your base pay during your first 12 months of service. In exchange for that $1,200 total contribution, you get access to up to 36 months of education benefits after you leave the military, currently paying up to $2,518 per month for veterans with three or more years of active duty.1Veterans Affairs. Montgomery GI Bill Active Duty (Chapter 30) Rates The deduction is pre-tax, so your take-home drops by slightly less than the full $100 each month, and the line disappears from your LES once you’ve hit 12 deductions.
The formal name is Chapter 30 of Title 38. Federal law requires the pay reduction for the first 12 months after enrollment, and the money goes to the Treasury rather than into an account you can withdraw from later.2Office of the Law Revision Counsel. Title 38 USC 3011 – Basic Educational Assistance Entitlement for Service
When the Deduction Starts and How to Opt Out
Eligible active-duty service members are automatically enrolled. Under rules that took effect in 2023, you get a 90-day window that opens on your 180th day of service to disenroll. Take no action by day 270 and enrollment locks in automatically, with $100 deductions beginning the following month. Your branch must counsel you on the program at least once during that 270-day period.3United States Coast Guard. Montgomery GI Bill (MGIB) Program New Requirement
To formally opt out, you sign the disenrollment section of DD Form 2366. The decision is irrevocable. Once you disenroll, there is no mechanism to re-enroll later if you change your mind.
For most service members, staying enrolled is the right call. You’re trading $1,200 for benefits worth well over $90,000 at current rates. The main reason someone might disenroll is already having Post-9/11 GI Bill eligibility from prior service and being certain they’ll never need MGIB as a backup.
What Your $1,200 Buys
MGIB pays a flat monthly stipend while you’re enrolled in an approved education or training program. Unlike the Post-9/11 GI Bill, which pays tuition directly to your school, MGIB sends the check to you and you pay the school yourself. Maximum entitlement is 36 months of full-time benefits.4Veterans Affairs. Montgomery GI Bill Active Duty (MGIB-AD)
For the benefit year running October 2025 through September 2026, the full-time monthly rates are:
- Three or more years of active duty: $2,518 per month
- Two to three years of active duty: $2,043 per month
Part-time enrollment pays proportionally less.1Veterans Affairs. Montgomery GI Bill Active Duty (Chapter 30) Rates At the three-year veteran rate, 36 months of benefits adds up to roughly $90,648 total from a $1,200 investment.
Approved training goes well beyond four-year degrees. MGIB covers graduate programs, vocational and technical training, apprenticeships and on-the-job training, flight school if you already hold a private pilot license, correspondence courses, licensing and certification exams, and entrepreneurship courses through Small Business Development Centers.
Kicker Payments
Some service members receive an additional monthly payment called a “kicker” on top of the standard MGIB rate. Kickers are recruiting or retention incentives offered by individual branches, not something you can request after the fact. If your enlistment or reenlistment contract includes one, the extra amount (commonly a few hundred dollars per month) is added to each benefit payment. Kicker payments are tax-free, like the base MGIB benefit.
The $600 Buy-Up Option
While still on active duty, you can contribute an additional $600 to increase your monthly MGIB payments by $150 for each month of full-time enrollment.5Veterans Affairs. $600 Montgomery GI Bill Buy-Up Program Rates Over 36 months, that extra $600 returns $5,400 in additional benefits. The buy-up contribution shows as a separate deduction on your LES while active. Contact your personnel or payroll office to enroll; the contribution must be completed before you separate from service.
Can You Get the $1,200 Back?
The $1,200 contribution is normally nonrefundable. You don’t get it back if you simply choose not to use the benefit, and disenrolling doesn’t trigger a refund either.
There is one path to a refund: switch to the Post-9/11 GI Bill and exhaust all 36 months of entitlement. If you were receiving a Post-9/11 monthly housing allowance on the day your entitlement ran out, the VA refunds up to $1,200, typically by adding it to your final housing allowance payment.6Veterans Affairs. Montgomery GI Bill Refunds This only works if you completely use up your Post-9/11 entitlement. Stopping short, even by a single day, means no refund.
MGIB vs. the Post-9/11 GI Bill
Most service members who entered after September 10, 2001, qualify for both MGIB (Chapter 30) and the Post-9/11 GI Bill (Chapter 33). You can use only one at a time, and the right choice depends on where and how you plan to study.
MGIB sends a flat monthly check to you regardless of what your school charges. If your tuition is lower than the monthly stipend, you pocket the difference. The Post-9/11 GI Bill pays tuition and fees directly to your school (covering 100% of in-state public tuition, or up to $29,920.95 per year at private institutions for the 2025–2026 academic year), then separately pays a monthly housing allowance based on the local cost of living near your school, plus up to $1,000 per year for books and supplies.7Federal Register. Increase in Maximum Tuition and Fee Amounts Payable Under the Post-9/11 GI Bill
MGIB can pay more in specific situations. If you attend a low-cost school where tuition sits well below the MGIB monthly rate, you keep the full stipend regardless. Veterans attending schools with tuition assistance from other sources sometimes come out ahead as well, since the flat payment has no requirement that it go toward tuition. MGIB also doesn’t reduce housing allowance for online students the way Post-9/11 does.
For most veterans attending mid-to-high-cost schools in person, the Post-9/11 combination of tuition, housing allowance, and book stipend exceeds what MGIB provides. Post-9/11 also allows you to transfer remaining benefits to a spouse or children with a service commitment, while MGIB transfer rights are far more limited, capped at 18 months and requiring service department approval.8eCFR. Title 38 CFR 21.7080 – Transfer of Entitlement
The 10-Year Deadline
MGIB benefits expire 10 years after your last discharge from active duty.9Office of the Law Revision Counsel. Title 38 USC 3031 – Time Limitation for Use of Eligibility and Entitlement That clock runs whether or not you’ve applied. Separate in 2026 and wait until 2037 to start school, and you’ve lost the benefit entirely. Limited extensions exist for disability or recall to active duty, but the baseline rule is strict. If you expect to work for several years before going back to school, consider whether the Post-9/11 GI Bill (which has no expiration date for service members who left after January 1, 2013) fits your timeline better.
What If You’re in the Reserve?
A separate program called the Montgomery GI Bill Selected Reserve (MGIB-SR, Chapter 1606) exists for Reserve and National Guard members and does not require any $1,200 pay reduction.10Veterans Affairs. Montgomery GI Bill Selected Reserve (MGIB-SR) So if you’re in the Selected Reserve and see an MGIB deduction on your LES, that line is the Chapter 30 active-duty contribution, not anything tied to Chapter 1606. It means you’re enrolled in MGIB-AD through an active-duty service component.