How Military Leave Accrual Works

Active-duty service members earn leave at a fixed rate of 2.5 days for every full month of service. Over a standard year that adds up to 30 days of ordinary leave, which is the figure most people quote when they talk about their annual vacation allowance. The rate does not change with rank or time in service, so a new private accrues at the same pace as a senior officer.

Because the rate is 2.5 days a month, partial months still contribute to your balance over time, but the official crediting is monthly. If you want a quick mental model, think of it as one day every twelve days, or 30 days across a full year of service. Your Leave and Earnings Statement, or LES, is the authoritative record of what you have actually earned and used.

There is a ceiling on how much leave you can carry from one fiscal year into the next. The standard cap is 60 days. Any balance above 60 days at the end of the fiscal year on 30 September is forfeited unless it is protected by a special provision, such as leave accrued in a combat zone under specific rules. This is what people mean when they say leave is use-or-lose.

The practical takeaway is to watch your balance as summer turns to fall. If you are climbing toward 60 days and have unused leave stacking up, you either need to schedule time off or risk losing days you earned. Planning a few months out is the difference between a relaxing block of leave and watching a hard-earned balance evaporate.

Guessing where your balance will land at the end of the fiscal year is difficult to do in your head, especially once you factor in leave you already have on the books plus days you plan to take. The Military Leave Accrual Calculator does the arithmetic for you: it starts from your current balance, adds 2.5 days for each month between now and your target date, subtracts any planned leave, and flags whether you are at risk of crossing the 60-day cap.

Leave is one of the few benefits you earn steadily and can lose instantly. Because approval, unit operations tempo, and family schedules all take time to align, the service members who never forfeit leave are the ones who look at their projected balance months in advance rather than in September. A short projection each quarter keeps surprises off the table.

Selling leave is possible only in limited circumstances, such as at reenlistment or separation, and it is capped over a career. That makes actually taking your leave the most reliable way to get its full value, so treat a rising balance as a prompt to plan rather than something to sort out later.