O-1 Pay in 2026: Basic Pay, BAH & What It All Adds Up To
The pay chart says an O-1 earns $4,150.20 to $5,222.40 a month — but basic pay is only the taxable slice of the package. This page shows the full 2026 O-1 pay progression by years of service, then adds the parts a base-pay table hides: housing allowance, food allowance, and what they're worth because they're excluded from federal taxable income.
2026 O-1 basic pay by years of service
Monthly basic pay from the 2026 DFAS pay table, effective January 1, 2026 (3.8% raise). O-1 pay has only 3 longevity steps — the table below shows each step.
| Years of service | Monthly basic pay | Annual |
|---|---|---|
| Under 2 years | $4,150.20 | $49,802 |
| Over 2 years | $4,320.00 | $51,840 |
| Over 3 years | $5,222.40 | $62,669 |
What an O-1 actually receives each month
Worked example: O-1, over 2 years, without dependents, living off-installation. Figures use the national median BAH across all 338 military housing areas — your actual BAH depends on your duty station.
That's about $76,806 per year — and because BAH and BAS are excluded from federal taxable income, this package is worth roughly $2,996 more per year than the same dollars paid as taxable salary. Counting that tax advantage and the value of TRICARE coverage, a civilian job would need to pay about $81,842 to match it.
Tax advantage estimated at a 12% marginal federal rate (single filer) for this base pay; your actual benefit depends on your income, filing status, and state taxes.
What O-1 means — and what changes financially
O-1 is Second Lieutenant in the Army, Second Lieutenant in the Marine Corps, Second Lieutenant in the Air Force, Ensign in the Navy, and Second Lieutenant in the Space Force.
O-1 is the entry commissioned-officer grade — Second Lieutenant in the Army, Marine Corps, Air Force, and Space Force, and Ensign in the Navy. New O-1s arrive from a service academy, ROTC, or Officer Candidate/Training School, usually straight into branch-specific technical training before their first unit.
Time at O-1 is short: promotion to O-2 typically comes around 18 to 24 months and is near-automatic with satisfactory performance. The pay table reflects that — three steps, with a sharp jump at the over-3 column that most officers reach only after pinning on O-2.
Financially, the officer start differs from the enlisted one in two ways worth knowing. Officers receive the lower BAS rate and generally pay for their own meals rather than using a meal card, and most are authorized to live off-installation from the start — so BAH typically arrives as cash from the first duty station, excluded from federal taxable income. The same TSP auto-enrollment mechanics that apply to enlisted members apply at commissioning.
Prior enlisted service: the O-1E pay scale
O-1s with more than 4 years of creditable service — most commonly officers who served enlisted first — are paid on the O-1E scale instead. The criterion is the four-year creditable-service mark, not a "10-year rule." At over 4 years the two scales start at the same rate ($5,222.40/month), then diverge with longevity: O-1E keeps climbing to $6,484.50/month at over 14 years, while standard O-1 tops out at $5,222.40/month — a gap of $1,262.10/month at the top of the scales.
The full O-1E progression is in the 2026 pay charts.
Frequently asked questions
How much does an O-1 make in 2026?
O-1 monthly basic pay in 2026 ranges from $4,150.20 to $5,222.40, depending on years of service. An O-1 over 2 years of service earns $4,320.00/month in basic pay. Basic pay is only part of military compensation — most members also receive BAH and BAS on top of it.
What is O-1 total compensation with BAH and BAS?
Using the 2026 national median BAH without dependents ($1,752/month), an O-1 with over 2 years of service and no dependents receives about $6,400/month — $4,320.00 basic pay, $1,752 BAH, and $328.48 BAS — roughly $76,806 per year. Actual totals depend on duty station, since BAH varies by location.
How long does an officer stay at O-1?
Usually about 18 to 24 months. Promotion to O-2 is near-automatic with satisfactory performance, on a timeline set by each branch. Officers with prior enlisted service follow the same timeline but are paid on the O-1E scale (see above).
Is O-1 pay taxable?
Basic pay is subject to federal income tax and, in most states, state income tax. BAH and BAS are excluded from federal taxable income, which is why the real value of an O-1's package is higher than the base-pay number alone suggests. In designated combat zones, the Combat Zone Tax Exclusion applies to officers as well, capped at the highest enlisted pay rate.
Go deeper
- Total Compensation Calculator — your full package with your actual BAH and TSP match
- 2026 Military Pay Charts — interactive tables for every grade and year of service
- BAH Calculator — 2026 rates for all 40,959 ZIP codes
- Military Tax Advantages Most Service Members Miss — the full deep dive
- Fort Benning BAH rates — see what an O-1 actually receives at Fort Benning
- Fort Sill BAH rates — see what an O-1 actually receives at Fort Sill
- Naval Air Station Pensacola BAH rates — see what an O-1 actually receives at Naval Air Station Pensacola
Disclaimer
MilPayTools calculators use official DoD and VA rate tables (2026) for educational purposes only. Results are estimates and may not reflect your exact situation. Always verify your pay and benefits with your unit's Finance Office, your MyPay account, or an accredited military financial counselor. Tax calculations are illustrative estimates — consult a tax professional for personalized advice. This tool is not affiliated with the Department of Defense, the VA, or any government agency.
Sources: basic pay from the 2026 DFAS military pay tables, effective January 1, 2026. BAH national median computed from the official 2026 DTMO BAH rate data (338 military housing areas). BAS from the 2026 DFAS published rates. Basic pay is taxable income; verify your own pay on your LES via myPay. Last updated June 10, 2026.