O-1 is an officer pay grade. The title depends on the branch, but the pay is identical.
O-1 basic pay by years of service
| Years of service | Monthly | Yearly | Change |
|---|---|---|---|
| 2 or less | $4,150.20 | $49,802 | |
| Over 2 | $4,320.00 | $51,840 | +$169.80 |
| Over 3 | $5,222.40 | $62,669 | +$902.40 |
| Over 4 | $5,222.40 | $62,669 | no change |
| Over 6 | $5,222.40 | $62,669 | no change |
| Over 8 | $5,222.40 | $62,669 | no change |
| Over 10 | $5,222.40 | $62,669 | no change |
| Over 12 | $5,222.40 | $62,669 | no change |
| Over 14 | $5,222.40 | $62,669 | no change |
| Over 16 | $5,222.40 | $62,669 | no change |
| Over 18 | $5,222.40 | $62,669 | no change |
| Over 20 | $5,222.40 | $62,669 | no change |
| Over 22 | $5,222.40 | $62,669 | no change |
| Over 24 | $5,222.40 | $62,669 | no change |
| Over 26 | $5,222.40 | $62,669 | no change |
| Over 28 | $5,222.40 | $62,669 | no change |
| Over 30 | $5,222.40 | $62,669 | no change |
| Over 32 | $5,222.40 | $62,669 | no change |
| Over 34 | $5,222.40 | $62,669 | no change |
| Over 36 | $5,222.40 | $62,669 | no change |
| Over 38 | $5,222.40 | $62,669 | no change |
| Over 40 | $5,222.40 | $62,669 | no change |
Rank title in each branch
| Army | Second Lieutenant |
| Navy | Ensign |
| Marine Corps | Second Lieutenant |
| Air Force | Second Lieutenant |
| Space Force | Second Lieutenant |
| Coast Guard | Ensign |
What an O-1 takes home in total
Basic pay is only part of the picture. At over 6 years, an O-1 earns $5,222.40 in basic pay and $328.48 in BAS. With an example housing allowance of $1,806 (an E-5 with dependents at Fort Bragg in 2026; your own rate depends on your grade and duty station), the monthly total is $7,356.88. The housing and food parts are tax-free, which is worth thousands of dollars a year compared with a civilian salary of the same size.
Questions
How much does an O-1 make a month in 2026?
Basic pay for an O-1 ranges from $4,150.20 a month (2 or less years of service) to $5,222.40 (over 40 years). Most members also receive tax-free BAS of $328.48 and, unless they live in government housing, BAH that depends on their duty station.
What is O-1 pay per year?
$49,802 to $62,669 a year in basic pay alone, before allowances.
Is O-1 pay the same in every branch?
Yes. Basic pay depends only on grade and years of service, so an O-1 in the Army, Navy, Marine Corps, Air Force, Space Force, Coast Guard is paid from the same table.