Military retirement is one of the few remaining true defined benefit pensions that still accrues for most participants. But the system changed fundamentally with the Blended Retirement System (BRS) in 2018, and if you entered service after January 1, 2018 or opted into BRS during the 2018 to 2019 election window, your retirement works differently than it did for previous generations of servicemembers.
The Legacy Retirement System (High-3)
Under the legacy system, servicemembers who serve 20 or more years receive a monthly retirement payment equal to: 2.5% times years of service times the average of the highest 36 months of base pay.
A servicemember retiring at exactly 20 years receives 50% of their high-3 average base pay. At 30 years, 75%. The retirement begins immediately upon separation, no waiting until age 60 or 65, and includes annual COLA tied to the Consumer Price Index. Full CPI protection from day one of retirement is a benefit almost no private sector pension matches.
The major limitation: it requires 20 years. A servicemember who separates at 18 years receives nothing under the legacy system. No partial pension, no vested benefit. This cliff vesting structure is unique among major pension programs.
The Blended Retirement System (BRS)
BRS applies to servicemembers who entered service on or after January 1, 2018, and those who opted in from 2018 to 2019. Under BRS, the retirement multiplier is reduced to 2.0% per year. 20 years equals 40% of high-3 pay. To partially offset this, DoD contributes 1% of base pay into the Thrift Savings Plan automatically and matches up to 4% of TSP contributions after 2 years of service. The TSP balance is portable: if you separate before 20 years, you keep it. The defined benefit cliff vesting still applies.
For a career servicemember who stays 20-plus years, BRS produces a smaller monthly retirement check than legacy. The TSP account partially offsets this, but most analyses show BRS is somewhat less generous for full-career servicemembers. BRS was designed to benefit the 83% of servicemembers who separate before 20 years and previously walked away with no retirement benefit at all.
The BRS lump sum option
BRS introduced a lump sum option: at retirement, you can elect to receive 25% or 50% of the present value of your future military retired pay as a lump sum, in exchange for reduced monthly payments until you reach Social Security Full Retirement Age, at which point your monthly pay reverts to the full amount. The lump sum is calculated using a discount rate set by DoD, and most analyses show it is not a favorable trade relative to simply taking the full monthly retirement pay throughout retirement.
Survivor Benefit Plan
The Survivor Benefit Plan costs 6.5% of covered retired pay and provides your surviving spouse with 55% of that amount as an inflation-adjusted monthly annuity for life. SBP is generally a favorable deal compared to commercially purchased annuities providing equivalent survivor protection, particularly because of the COLA feature. If you are married at retirement and decline SBP, your spouse must consent in writing. The election is irrevocable after a one-year window following retirement.
Military retirement and Social Security
Unlike most state public pension systems, military service is Social Security-covered employment. Servicemembers earn Social Security credits throughout their military career. There is no WEP or GPO issue for military retirees -- those provisions applied only to pensions from non-SS-covered employment and were repealed in January 2025 regardless. Military retirees claim Social Security based on their full earnings record without reduction.
BRS vs. Legacy: the lifetime income comparison with real numbers
For a servicemember deciding whether to opt into BRS during the election window, or evaluating their situation under whichever system applies to them, the core question is total lifetime retirement income. The legacy system's higher monthly payment must be weighed against the BRS's TSP match and the fact that 83% of servicemembers who entered under the legacy system received zero retirement benefit by separating before 20 years.
A concrete comparison for a servicemember who stays 20 years with a high-3 base pay average of $85,000: under legacy, the monthly retirement is 50% of $85,000, or $42,500/year ($3,542/month). Under BRS, it is 40% of $85,000, or $34,000/year ($2,833/month) -- $709/month less. The TSP under BRS, assuming maximum DoD match contribution of 5% of base pay for 20 years at 6% average annual growth, produces approximately $195,000 at separation. At a 4% withdrawal rate, that TSP generates $7,800/year ($650/month). The net monthly income difference (BRS pension plus TSP distribution versus Legacy pension alone) is approximately $709/month - $650/month = $59/month advantage for Legacy.
For a servicemember who contributes their own funds to the TSP beyond the government match, the TSP balance grows faster and the BRS math improves. At 10% personal contribution plus 5% government match, the TSP at 20 years is approximately $390,000, generating $15,600/year at 4%. The BRS then significantly outperforms the legacy system on total income from retirement. The legacy system's advantage was always concentrated among the career servicemember who did the minimum TSP contributions; the BRS's advantage is concentrated among those who maximized the match.
The Thrift Savings Plan under BRS: maximizing the government match
The DoD TSP contribution structure under BRS has three components that each require separate action to maximize. Understanding all three is essential to getting the full value of BRS.
Automatic 1% contribution: DoD automatically contributes 1% of base pay to your TSP regardless of whether you contribute anything yourself. This begins immediately at enlistment or commissioning. You receive it even if you contribute nothing. Over a 20-year career at an average of $60,000 in base pay, this automatic contribution compounds to approximately $40,000 at 6% annual growth -- real money even for servicemembers who do nothing else.
Matching contributions from year 2 to year 26: after 2 years of service, DoD matches your contributions dollar for dollar up to 3% of base pay, then 50 cents on the dollar for the next 2% (the next 2% generates 1% from DoD). The total government match is capped at 4% when you contribute 5% or more. To capture the full match, you must contribute at least 5% of base pay each month. Servicemembers who contribute less leave matching money on the table each pay period that cannot be recovered later. Set your TSP contribution to at least 5% of base pay as soon as you hit the 2-year mark.
Vesting in matching contributions: the automatic 1% contribution vests immediately. Matching contributions vest after 2 years of service. If you separate before 2 years, you keep the automatic 1% but forfeit the matching contributions. At the 2-year mark, all contributions to that point vest permanently. This vesting schedule is one reason the BRS is designed to benefit mid-career separators: even if you separate at year 6, you take a fully vested TSP account with you.
Continuation Pay: the BRS bonus and whether it is worth taking
BRS includes a Continuation Pay bonus, a one-time cash payment offered between years 8 and 12 of service in exchange for a commitment to serve additional years. The amount is at least 2.5 months of basic pay for active duty (with no cap set by law, though services set their own multipliers). As of 2026, continuation pay multipliers vary by service and occupation, with some high-demand specialties receiving 13 months or more of basic pay.
Continuation Pay is taxable income in the year received. A payment of $30,000 to $40,000 received in a year with regular military pay can significantly increase taxable income. Servicemembers who receive Continuation Pay in a combat zone may receive favorable tax treatment on a portion of the payment under existing combat zone exclusion rules. Consult your installation's financial readiness office or JAG before accepting large continuation pay awards to understand the tax implications in your specific situation.
Whether to accept Continuation Pay depends on whether you were already planning to stay through the required commitment period. If you intend to complete 20 years regardless, Continuation Pay is additional compensation for something you would have done anyway -- take it. If you are considering separating before the commitment period would end, Continuation Pay creates a financial penalty for early departure that can complicate the separation decision. Model the commitment period carefully before accepting.
VA disability compensation and military retirement pay: how they interact
VA disability compensation and military retirement pay are distinct benefits with different eligibility criteria and different tax treatment. Understanding the interaction is essential for any servicemember approaching retirement with a disability rating.
Military retirement pay is taxable income. VA disability compensation is not taxable. Historically, servicemembers could not receive both in full -- disability compensation reduced military retirement pay dollar for dollar under a provision called the offset. Two programs now allow simultaneous receipt under specific conditions.
Concurrent Retirement and Disability Pay (CRDP) is available to retirees with 20 or more years of service and a VA disability rating of 50% or higher. CRDP phases out the offset over time and is now fully restored for eligible retirees, meaning a retiree with a 70% VA rating who has 20 years of service receives both their full military retirement pay and their full VA compensation simultaneously. CRDP is taxable.
Combat-Related Special Compensation (CRSC) is available to retirees whose disability is directly linked to combat service, hazardous duty, or training for combat. CRSC allows retired pay to be replaced, up to the disability amount, with non-taxable compensation for combat-related disabilities. For retirees who qualify for both CRDP and CRSC, you must elect one or the other -- you cannot receive both simultaneously. For retirees with higher ratings and significant combat-related disabilities, CRSC may produce a higher after-tax income than CRDP because of the tax-free treatment.
Survivor Benefit Plan: the SBP vs. term life insurance comparison
The Survivor Benefit Plan provides a surviving spouse 55% of covered military retired pay as an inflation-adjusted annuity for life. The cost is 6.5% of covered base amount. The election is made at retirement and is irrevocable after a one-year window. A servicemember who declines SBP and later wants to add a surviving spouse's protection has no mechanism to do so outside of a limited remarriage provision.
The comparison most financial planners make: SBP versus buying private term or whole life insurance to provide the same survivor income. SBP's advantages are that it is COLA-adjusted (the annuity increases with inflation for the life of the survivor), it cannot be outlived by a long-lived surviving spouse, and it does not require medical underwriting. The military retiree who has been medically discharged or has health conditions that make individual insurance expensive or unavailable benefits significantly from SBP's guaranteed issue. SBP also has a premium that stops when the retiree dies -- unlike a whole life policy that continues building cash value the estate does not need.
SBP's disadvantages: if the spouse predeceases the retiree, all premiums paid are lost (there is no refund). If both spouses die early in retirement, neither the retiree's retirement pay nor the SBP premiums produce any value to heirs. Term life insurance, by contrast, pays out to any named beneficiary and generates a death benefit whether the insured is a veteran or not.
For most military retirees with healthy spouses who are likely to outlive them, SBP at 6.5% of covered pay is competitive with commercially purchased survivor annuities. The COLA feature in particular -- rare in commercial products -- adds meaningful long-term value for a surviving spouse living 20 to 30 years after the military retiree's death.
Guard and Reserve retirement: the 20-year letter and the pay calculation
Reserve Component retirement (Army National Guard, Army Reserve, Air National Guard, Air Force Reserve, Navy Reserve, Marine Corps Reserve, Coast Guard Reserve) works differently from active duty retirement in two fundamental ways: the qualifying service is measured in points rather than years of active service, and pay does not begin until age 60 (or earlier, with certain active duty reductions).
Reserve members earn retirement points through: drill weekends (48 points/year), annual training (1 point/day), active duty periods (1 point/day), and active membership (15 points/year). Each year of qualifying service requires a minimum of 50 points earned. Members who complete 20 qualifying years receive a Notice of Eligibility (NOE) -- sometimes called the "20-year letter" -- which is the authorization for eventual reserve retirement pay beginning at age 60.
The monthly retired pay calculation for Reserve Component retirement uses total points divided by 360 to produce a multiplier, then multiplied by the applicable high-36 average monthly base pay. A reservist with 3,500 points at retirement has a multiplier of 3,500/360 = 9.72 years equivalent. At a high-36 base pay equivalent of $8,000/month, the monthly reserve retirement pay at 60 is approximately 9.72 x 2.5% x $8,000 = $1,944/month. Active duty retirements are calculated differently (years x 2.5% for legacy, or years x 2.0% for BRS), which is why Reserve Component members who have both active and reserve service need to understand which computation method applies to their specific career history.
For reservists who performed significant active duty service -- deployment periods, extended active duty tours, AGR (Active Guard and Reserve) service -- the active duty periods earn 1 point per day and count both toward the point total and toward earlier pay eligibility. A reservist with 90 days of qualifying active duty service before age 60 can have their pay start date moved up by 90 days. Extensive active duty service can bring pay eligibility well below 60.
Disability retirement: PDRL, TDRL, and the intersection with VA ratings
Military disability retirement provides an alternative retirement path for servicemembers who are separated due to a physical or mental condition that is permanent, stable, and rated at 30% or higher by a Medical Evaluation Board (MEB) and Physical Evaluation Board (PEB). The disability retirement formula is separate from the length-of-service formula and can provide substantially higher benefits for servicemembers who are separated early with significant conditions.
Permanent Disability Retired List (PDRL) placement requires a PEB finding that the condition is permanent and the rating is 30% or higher. The disability retirement benefit is the higher of: (a) years of service x 2.5% x high-3 average base pay (the standard retirement formula), or (b) 2.5% x disability rating percentage x high-3 average base pay. A servicemember with 8 years of service and a 60% disability rating receives 2.5% x 60 x high-3, which equals 150% of monthly pay -- an effective benefit floor much higher than 8 years of service would produce under the standard formula, subject to a cap at 75% of base pay.
Temporary Disability Retired List (TDRL) placement occurs when a condition is potentially disabling but not yet stable. TDRL placement provides retirement pay at 50% of base pay minimum for up to 5 years while the condition is periodically re-evaluated. At re-evaluation, the PEB may remove you from the TDRL (return to duty or separate without benefits if the condition has resolved), place you on the PDRL (if the condition is now permanent and rated 30%+), or extend the TDRL period.
Using the pension math tools for military retirement planning
Military retirement calculations require the same present value framework as any other pension -- the difference is that the benefit is COLA-adjusted from day one, which substantially increases the lump sum equivalent value. A $3,500/month military retirement benefit for a 45-year-old retiree in 2026, COLA-adjusted over a 40-year expected retirement horizon, has a present value that exceeds most civilian pension calculations for the same monthly benefit amount.
For military members deciding between legacy retirement and BRS at the election window, or modeling the financial impact of continuing to serve versus separating at 16 or 18 years, the calculator at the present value calculator works with any defined monthly benefit. Enter the post-retirement monthly income, your current age, and the expected start date to see the present value comparison. Pair this with a TSP balance projection for the BRS match calculation to get a complete comparison of the two systems for your specific years-of-service and base pay scenario.
The SBP decision also benefits from present value analysis. The cost of full SBP at 6.5% of covered pay on a $3,500/month retirement is $227.50/month. That premium buys a $1,925/month (55% of $3,500) inflation-adjusted survivor annuity. If the retiree dies at 65 (20 years into retirement) and the spouse lives to 85, the survivor collects approximately 20 years of $1,925/month plus COLA increases -- easily exceeding the present value of premiums paid. Run the SBP break-even in the same calculator by treating the survivor annuity as the benefit and the premium cost as the annual fee.
The 20-year separation cliff: financial planning for servicemembers near the line
The legacy retirement system's 20-year cliff creates a stark financial discontinuity: a servicemember who separates at 19 years and 11 months receives nothing in retirement pay. One who reaches 20 years receives a pension for life. The present value difference between separating at 19 years and 20 years for a servicemember with a high-3 base pay of $80,000 is approximately $400,000 to $600,000 in present value terms -- one of the largest single-year financial decisions in any military career.
BRS softened this cliff by providing a TSP with government match and a pension at 20 years rather than zero at 19, but the vesting cliff still applies to the pension portion. Servicemembers under BRS who separate at 17 or 18 years leave without the pension. The TSP is fully theirs -- they take the vested balance with them -- but the lifetime monthly annuity requires completing 20 years. For members within 3 years of the 20-year mark who are considering separation, running the financial comparison between separating early (taking the TSP, losing the pension) and completing the commitment (earning both the pension and a larger TSP) almost always favors completing.
One nuance: servicemembers with combat-related injuries or conditions that qualify for disability retirement may be better served by a medical separation and disability retirement before 20 years than by continuing service to 20. The disability retirement formula (2.5% x disability rating x base pay) can produce more retirement income than the 20-year service formula for members with high ratings, particularly if the condition is service-connected and combat-related, enabling CRSC's non-taxable benefit. Before deciding between continuing to 20 and accepting a medical discharge, model both outcomes explicitly.
Federal tax treatment of military retirement pay
Military retirement pay is taxable as ordinary income at the federal level. There is no special federal tax exclusion for military retirement pay beyond the standard deduction and senior deduction amounts available to all retirees. CRDP (Concurrent Retirement and Disability Pay) received through DoD is also taxable. Only VA disability compensation and CRSC are non-taxable at the federal level.
For TSP withdrawals during retirement, the same rules apply as for any federal employee: traditional TSP distributions are taxable as ordinary income; Roth TSP qualified distributions are tax-free. Military members who contributed to Roth TSP during service -- particularly during tax-free combat zone deployments, when Roth contributions could be made without any federal income tax on the converted amount -- receive especially favorable treatment on those balances in retirement. The combat zone Roth contribution is one of the military's strongest tax advantages and one that servicemembers should consistently maximize during deployable years.
Planning your military retirement income with this calculator
Military retirement pay is a fixed monthly annuity denominated in today's dollars and COLA-adjusted for life, which makes it one of the most valuable retirement assets available to any American worker. The present value calculation makes this concrete: a 45-year-old O-5 (Lieutenant Colonel) retiring with $4,200/month in military retirement pay and expected to live to 82 has a lump sum equivalent value of approximately $760,000 to $820,000 depending on the discount rate used. Most servicemembers significantly underestimate this value when making career continuation or separation decisions.
Use the PensionMath calculator at the present value calculator to model the present value of your military retirement benefit alongside your TSP balance. Enter your projected monthly retirement pay at your planned separation date, your current age, and the expected retirement start date. For BRS servicemembers, run the calculator twice -- once for the pension-only scenario and once including a TSP distribution amount -- to see the full combined retirement picture. The results consistently show that completing 20 years, even at meaningful personal cost during the final years of service, is one of the highest-return financial decisions available to military members who are close to the threshold. For members considering separation at 14 to 18 years, the present value of the pension they are giving up consistently exceeds $300,000 to $500,000. That number, made concrete before a separation decision rather than in retrospect, changes the calculus for most servicemembers who see it clearly. The pension math is the starting point for every military career decision that involves leaving before 20 years. State income tax treatment of military retirement pay -- now fully exempt in the large majority of states -- adds additional value to the pension that the federal-only calculation understates. For servicemembers in states that tax military retirement pay, the state tax differential between staying (higher pension, same state tax) and separating early (no pension, no state tax issue) is a secondary factor worth including in the complete comparison. Use the military retirement calculator to model both the Legacy and BRS outcomes with your specific years of service and projected pay grade -- the calculator handles the BRS matching contribution value and the pension reduction side by side for direct comparison.