Military Leave Carryover Optimizer

Planning military leave against the 30 September ceiling

Introduction to use-or-lose leave and the carryover ceiling

Every member on active service accrues leave at a flat rate of 2.5 calendar days for each month of active service. That rate is set by statute, it does not speed up in a combat zone, and it does not slow down in garrison. Over twelve months it produces exactly 30 days of new leave. Separately, and this is the number that actually hurts people, a member may not carry more than 60 days of leave across the end of the fiscal year. At midnight on 30 September anything above your ceiling simply stops existing. There is no appeal, no partial credit, and no cash value.

The trap is timing rather than arithmetic. Leave piles up quietly during workups, deployments, inspections, and change-of-command season, and it is hardest to schedule in the last quarter of the fiscal year when every other member of the unit is trying to burn the same calendar. A member sitting at 58 days in June with a heavy August is already in trouble and usually does not know it. A projection that runs current balance plus remaining accrual minus scheduled leave, tested against the correct ceiling, surfaces the problem while there is still calendar left to solve it. That is what this optimizer does, and the chart under the form draws the month-by-month path so you can see exactly where the line crosses.

30 days a year of accrual versus 60 days in the bank: the pair everyone mixes up

These two numbers get swapped constantly, including in briefings, so it is worth stating them side by side. 30 days per year is a flow. It is how much leave arrives in your account over twelve months of active service, 2.5 days at a time. 60 days is a stock. It is the largest balance you are permitted to still be holding at the instant the fiscal year turns over. Neither one limits the other during the year: a member who starts the fiscal year at 55 days and takes no leave will be at 85 days by the following September, having accrued only 30 days but blowing straight through the 60-day carryover ceiling and forfeiting 25 days.

The reverse confusion is just as common and more expensive. Members hear "60-day cap" and assume they are allowed to sit at 60 days indefinitely with nothing at stake. In practice a balance parked at or near 60 has zero headroom: every month that passes adds 2.5 days that are already condemned unless they are taken before 30 September. If you are at 60 days on 1 April, you have six months of accrual, 15 days, that will be forfeited unless you schedule them. The healthy operating band is well below the ceiling, not against it.

How to use the carryover optimizer, field by field

1. Current leave balance: copy the balance from your most recent Leave and Earnings Statement. Half-day increments are normal, so 35.5 is a valid entry.
2. Whole months left in the fiscal year: the number of complete months of active service remaining before 30 September, from 1 to 12. The model credits 2.5 days for each of them and does not prorate a partial month.
3. Leave days already scheduled: everything you have on the calendar between now and the end of the fiscal year, approved or firmly planned.
4. Special leave accrual status: choose "no SLA" for the ordinary 60-day ceiling, "SLA approved" if a general or flag officer has authorised you in writing to retain excess leave, or the legacy transition option if you still hold pre-2023 protected days above 90.
5. Approved SLA days: how many excess days your written authorisation covers, capped by law at 30. Your ceiling becomes 60 plus this number. Selecting SLA and leaving this at zero correctly produces a 60-day ceiling, because approval without protected days protects nothing.
6. Monthly basic pay: the basic pay line from your LES, not your total pay. The tool divides by 30 itself, so you never have to do that conversion.
7. Days of leave already sold in your career: lifetime sell-back is capped at 60 days, so the tool subtracts what you have used to show your real remaining allowance.

Press Calculate leave plan and then drag the what-if slider to test scheduling extra days; the chart and the use-or-lose figure both update live. The CSV download captures the whole scenario for your records or for a conversation with your leadership. Reset form restores the defaults.

Carryover formulas and where the 60- and 90-day numbers come from

Annual accrual is a fixed product of the statutory monthly rate, and it is the number people mistake for the cap:

Accrual over the months you have left before the fiscal year ends is the same rate, applied to whole months:

The projected balance on 30 September subtracts the leave you have already scheduled:

Your carryover ceiling is 60 days, raised by any special leave accrual days your command has approved in writing, up to a statutory maximum of 30 extra days:

Anything above the ceiling on 30 September is forfeited outright:

Protected special leave accrual days carry a deadline of their own, counted from the fiscal year in which the qualifying duty ended:

And a day of sold-back leave is priced at one thirtieth of monthly basic pay, with no allowances of any kind:

The assumptions inside those formulas are worth stating plainly. Months left are treated as whole months at 2.5 days each; the pay system actually credits partial months at half a day for each period of six days or less, so a mid-month start or separation shifts the result slightly. Scheduled leave is spread evenly across the remaining months for charting purposes only, which affects the shape of the line but never the 30 September endpoint. And the model deliberately allows a negative projection: if you have planned more leave than you will ever have, the negative number is the answer, not a bug.

Worked example: 58 days on the books with four months to go

Your LES shows 58.0 days. It is 1 June, so there are 4 whole months left before 30 September. You have 6 days of leave already approved for July. You have no special leave accrual authorisation, your monthly basic pay is $4,500, and you have never sold leave back.

• Accrual to 30 September = 2.5 × 4 = 10.0 days
• Projected 30 September balance = 58.0 + 10.0 − 6.0 = 62.0 days
• Ceiling = 60 + min(30, 0) = 60 days
• Use-or-lose = max(0, 62.0 − 60) = 2.0 days

So you need 2 more days on the calendar before 30 September, on top of the 6 you already have. Those 2 days cannot be sold: you are not separating, and the one-time special leave accrual sell-back applies only to leave lost above 90 days. If you were separating, the day rate would be $4,500 ÷ 30 = $150, so 62 days of terminal balance would be worth 60 × $150 = $9,000 gross, because the career sell-back limit stops the payment at 60 days and the remaining 2 days are simply not payable. Taxes come off that figure, and no housing or subsistence allowance is included in it.

Change one input and the picture changes completely. Give the same member a written special leave accrual authorisation for 30 days after a seven-month deployment: the ceiling becomes 90, the 62-day projection sits comfortably under it, and use-or-lose drops to zero — but the 2 days above 60 now become protected days with an expiry date, and they must be used before the end of the second fiscal year after the deployment ended or they vanish anyway.

Special leave accrual: the 90-day ceiling, the two-year window, and the ratchet

Special leave accrual exists because some duty makes taking leave impossible. Under 10 U.S.C. 701(e) it applies to a member who serves at least 120 continuous days entitled to hostile fire or imminent danger pay, or who is assigned to a deployable ship, a mobile unit, or other duty designated for the purpose. It is never automatic. The member must receive written authorisation from the first officer in a grade above O-6 in the chain of command, and the governing instruction is explicit that special leave accrual may not be used to paper over a member's own failure to manage a leave balance.

Three details decide whether protected days survive. First, the amount: the carry-forward allowance is capped at 30 excess days, giving the 90-day combined ceiling of 60 ordinary days plus 30 protected days. Second, the clock: protected days are forfeited unless used before the end of the second fiscal year after the fiscal year in which the qualifying service terminated, which in practice is a two-year window, not an indefinite reprieve. Third, and least known, the ratchet: the maximum you may carry forward is reset downward to the lowest balance you reach after the qualifying duty ends, and if your balance ever touches 60 days or less, the protection disappears entirely and cannot be rebuilt from the same authorisation.

One transition rule is still live. The 120-day ceiling that many members remember was repealed by section 632 of the Fiscal Year 2023 National Defense Authorization Act, effective 1 January 2023. Balances that exceeded 90 days before that date were grandfathered, but the statutory transition ends on 30 September 2026: any leave above 90 days accumulated under the old rules is forfeited unless it is used on or before that date, or its retention is separately authorised by law.

Selling leave back: what 37 U.S.C. 501 actually allows

Selling leave is far more constrained than the forums suggest, and the constraints are what make the sell-back column of the results table meaningful. Payment for unused accrued leave is triggered by a discharge event: separation or release from active duty under honorable conditions, retirement, death on active duty, or the termination of an enlistment in conjunction with a new one. It is not something you can elect in June because your balance is high. Across an entire career you may be paid for no more than 60 days, and every previous payment counts against that total.

The single routine exception is the one-time payment at 37 U.S.C. 501(b)(6). An enlisted member who qualifies for special leave accrual and who would otherwise lose accumulated leave above 90 days may elect payment for up to 30 days of that excess. It may be exercised only once in a career, and it still counts against the 60-day career ceiling. The table below is the comparison that matters when you are deciding whether to schedule leave or bank on selling it.

Scenario table: how balance, months, and ceilings interact

Each row runs the same formulas the calculator does, so you can check the tool against them. Your own numbers should always come from your LES.

Limitations and assumptions behind this projection

This page is a planning aid, not a pay system. It simplifies several rules that your finance office applies exactly, and the following limitations bound how far you should trust its output:

• Official balances win. Your LES and your finance or personnel office are authoritative for both your balance and any special leave accrual authorisation. This tool never sees either.
• Whole months only. Accrual is credited at 2.5 days for each remaining whole month. The pay system credits partial months at half a day for each period of six days or less, so mid-month arrivals, separations, and periods of non-accrual shift the answer.
• Non-accrual periods are ignored. Leave does not accrue during unauthorised absence, confinement resulting from a court-martial sentence, appellate leave, or excess leave. The model assumes none of these apply.
• The SLA ratchet is not modelled. The tool applies your approved SLA days as a flat ceiling. It does not track the downward reset that occurs when your balance drops after the qualifying duty ends, nor the loss of protection when the balance touches 60 days.
• Expiry dates are not tracked. Protected days expire at the end of the second fiscal year after the qualifying service ended, and legacy pre-2023 days above 90 expire on 30 September 2026. The calculator flags these rules but does not hold your dates.
• Sell-back eligibility is not verified. The tool applies the 60-day career limit and the one-time SLA option as arithmetic. It cannot confirm that you are at a qualifying discharge event, that your separation is under honorable conditions, or that a contingency-operation exception applies.
• All money figures are gross. Federal and state withholding reduce any payment, and combat zone tax exclusion treatment of leave accrued in a designated area is not modelled.
• Component and service nuances are out of scope. Advance leave, excess leave, terminal leave strategy, permissive TDY, leave donation, and reserve-component leave disposition all follow rules this page does not implement.

Sources checked for this page. Accrual of 2.5 calendar days per month of active service, the bar on accumulating more than 60 days, and the special leave accrual allowance of not more than 30 days of excess leave — forfeited unless used before the end of the second fiscal year after the fiscal year in which the qualifying service ended — all come from 10 U.S.C. 701(a), (b) and (e). The repeal of the old 120-day ceiling and the 30 September 2026 transition deadline are section 632 of Public Law 117-263, set out in the notes to that section. Implementation, including the 90-day combined ceiling and the written approval requirement from the first officer above O-6, is in DoD Instruction 1327.06, paragraphs 3.6, 3.8 and 3.8.g. Sell-back entitlement, the 60-day career limit, and the one-time enlisted payment for leave lost above 90 days are 37 U.S.C. 501(b) and DoD FMR Volume 7A, Chapter 35, paragraphs 2.1.1.2, 2.1.1.3 and 2.2.2.1 through 2.2.2.5. The rule that a day of basic pay is one thirtieth of the monthly rate is DoD FMR Volume 7A, Chapter 1, paragraph 3.2.3. Verified August 2026. This is an unofficial planning estimate; confirm every figure with your LES and your finance office.

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