Your GI Bill Monthly Housing Allowance has three dials: your school's location rate, your benefit tier (50% to 100% based on length of service), and your rate of pursuit, which is how full-time you're enrolled. That third dial is the one that quietly costs people money, because dropping from full-time to 80% enrollment doesn't just reduce your workload. It reduces your housing check by exactly 20%.
How rate of pursuit is calculated
The VA computes it as the credits you're taking divided by what your school considers full-time. The VA's own example: if 12 credits is full-time and you're taking 9, your rate of pursuit is 80% (9 divided by 12, rounded to the nearest tenth). Clock-hour programs use scheduled hours per week the same way.
Then the VA multiplies: campus MHA x benefit tier x rate of pursuit = your monthly check. Every dial below 100% shrinks the payment proportionally.
The numbers: what each enrollment level pays
Take a veteran at the 100% benefit tier attending school in Denver, where the estimated 2026-27 campus MHA is $2,841:
| Rate of pursuit | Example credits (12 = full-time) | Monthly MHA | 9-month school year |
|---|---|---|---|
| 100% | 12 | $2,841 | $25,569 |
| 90% | 11 | $2,557 | $23,013 |
| 80% | 9-10 | $2,273 | $20,457 |
| 70% | 8 | $1,989 | $17,901 |
| 60% | 7 | $1,705 | $15,345 |
| 50% or below | 6 or fewer | $0 | $0 |
Dropping from 12 credits to 9 costs about $568 a month, or $5,112 over the school year, in Denver. And dropping to 6 credits doesn't halve the check. It zeroes it.
The half-time cliff
This is the rule that hurts people: at half-time enrollment or below, the MHA is not prorated, it's not payable at all. Six credits when twelve is full-time gets you $0 in housing money, not half. I've heard from veterans who dropped a class mid-semester, fell to exactly half-time, and lost the entire month's housing payment. If you're anywhere near the line, that one class is load-bearing.
The VA rounds rate of pursuit to the nearest tenth, which creates a small but real edge: 7 credits out of 12 is 58.3%, which rounds to 60%... wait, no. 7/12 is 58.3%, and the VA rounds to the nearest tenth of the rate, 60% here, which is above the half-time cutoff, so MHA is payable at the 60% level. The point stands: know your school's full-time credit number and do the division before you drop anything.
Benefit tier stacks on top
Don't forget the second dial. If you served 24 months of active duty, your tier is 80%. At 80% enrollment in Denver, your check is $2,841 x 0.80 x 0.80 = $1,818 a month. The two dials multiply, so being at 80% on both costs you 36% of the full rate, not 20%. New veterans are often surprised by this. The full 100% tier requires 36 months of aggregate active-duty service (or a Purple Heart, or a service-connected discharge).
What I'd actually do with this information
Three practical moves:
1. Protect full-time status like it pays rent. Because it literally does. Before dropping a class, compute your new rate of pursuit and check whether you stay above half-time. If dropping puts you at 50% or below, the lost housing money usually dwarfs whatever relief the lighter schedule brings.
2. Front-load credits when you can. If your program allows it, taking 12-15 credits in the fall and spring at 100% MHA beats a stretched-out schedule at 80% every time, both in housing money and in how fast you finish the degree.
3. Model it before you enroll. Our GI Bill housing allowance calculator lets you set your town, benefit tier, and enrollment level and see the monthly and 9-month totals instantly. Run your planned schedule through it before the term starts, not after the first short check arrives.
One more thing worth knowing: if BAH rates drop in your area, your MHA is protected. It won't decrease unless you change schools or take a break in training longer than six months. The rate can only go up for you, never down, as long as you stay continuously enrolled. That's a small but genuine piece of good news in a system full of fine print. (Related: fully online vs hybrid and your MHA)