Osan Air Base is an OCONUS Air Force installation in Pyeongtaek, South Korea. This guide covers Overseas Housing Allowance (OHA), MIHA, TRICARE region, and PCS resources.
Rates last verified September 2026 against the published source tables.
Home of the 51st Fighter Wing and 7th Air Force HQ — the primary U.S. Air Force installation in South Korea. Roughly 10,000 service members are assigned here.
Osan Air Base is an overseas assignment, so housing is paid through Overseas Housing Allowance rather than BAH. OHA reimburses your actual rent up to a cap set for the location and paygrade, which means what you receive depends on the lease you sign — unused allowance is forfeited rather than kept. A move-in housing allowance covers one-time costs such as deposits and transformers.
Care here falls under the TRICARE Overseas region.
| Pay grades | With dependents | In dollars | Without dependents (90%) | In dollars |
|---|---|---|---|---|
| O-6 | ₩3,184,449 | $2,396 | ₩2,866,004 | $2,156 |
| O-5 / W-5 | ₩3,184,449 | $2,396 | ₩2,866,004 | $2,156 |
| O-4 / W-4 / W-3 / O-3E | ₩2,600,000 | $1,956 | ₩2,340,000 | $1,760 |
| O-3 / W-2 / O-2E / O-1E | ₩2,200,000 | $1,655 | ₩1,980,000 | $1,490 |
| O-2 / W-1 | ₩1,888,889 | $1,421 | ₩1,700,000 | $1,279 |
| O-1 | ₩1,888,889 | $1,421 | ₩1,700,000 | $1,279 |
| E-9 | ₩2,600,000 | $1,956 | ₩2,340,000 | $1,760 |
| E-8 | ₩2,200,000 | $1,655 | ₩1,980,000 | $1,490 |
| E-7 | ₩2,200,000 | $1,655 | ₩1,980,000 | $1,490 |
| E-6 | ₩2,200,000 | $1,655 | ₩1,980,000 | $1,490 |
| E-5 | ₩1,888,889 | $1,421 | ₩1,700,000 | $1,279 |
| E-4 | ₩1,777,778 | $1,337 | ₩1,600,000 | $1,204 |
| E-3 / E-2 / E-1 | ₩1,777,778 | $1,337 | ₩1,600,000 | $1,204 |
No. BAH is a non-taxable allowance, so it does not appear as taxable wages on your W-2 and no federal or state income tax is withheld from it. That makes a dollar of BAH worth noticeably more than a dollar of base pay, which is why comparing a civilian salary against base pay alone understates military compensation.
Osan Air Base is overseas, so housing is paid through Overseas Housing Allowance rather than BAH. The difference that matters is that OHA is a reimbursement, not a flat rate: you are paid your actual rent and utilities up to a cap set for the location and your paygrade, and anything you do not spend is forfeited rather than kept. A separate move-in housing allowance covers one-time setup costs such as deposits, agent fees and transformers.
Osan Air Base falls in the TRICARE Overseas region. The region determines which contractor administers your care and where referrals are authorized, so a PCS that crosses regions means transferring your enrollment — Prime enrollment does not follow you automatically, and letting it lapse drops you to TRICARE Select with its cost shares.
Most of it is reimbursed rather than paid. A PCS to Osan Air Base normally pays a dislocation allowance, a mileage allowance for driving your own vehicle, per diem for you and each dependent while you travel, and temporary lodging once you arrive. Choosing a personally procured move pays you the government's cost for the same shipment, so the profit — and the tax on it — depends on your weight and the distance. The PCS calculator estimates all of those for this destination.