As a finance and investment expert, I often analyze retirement plans to help individuals make informed decisions. The U.S. Army’s old retirement plan, officially known as the High-3 Retirement System, was the standard before the Blended Retirement System (BRS) took effect in 2018. Many service members who enlisted before 2018 still fall under this plan, and understanding its mechanics is crucial for long-term financial planning.
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How the Army Old Retirement Plan Works
The High-3 system calculates retirement pay based on three key factors:
- Years of Service – The total number of years served in the military.
- Rank at Retirement – The pay grade at the time of retirement.
- Average of Highest 36 Months of Basic Pay – The “High-3” refers to the average of the highest 36 months of basic pay, typically the last three years of service.
The formula for calculating retirement pay under the High-3 system is:
Retirement\ Pay = (Years\ of\ Service \times 2.5\%) \times Average\ of\ Highest\ 36\ Months\ of\ Basic\ PayFor example, a Sergeant Major (E-9) retiring after 20 years with an average High-3 pay of $6,000/month would receive:
Retirement\ Pay = (20 \times 0.025) \times \$6,000 = 0.50 \times \$6,000 = \$3,000/monthKey Features of the High-3 Plan
- Immediate Annuity – Unlike civilian 401(k) plans, the High-3 system provides a guaranteed monthly pension immediately upon retirement.
- Cost-of-Living Adjustments (COLA) – Retirement pay increases annually based on inflation.
- Survivor Benefit Plan (SBP) – Optional coverage that provides a portion of retirement pay to a surviving spouse.
Comparison: High-3 vs. Blended Retirement System (BRS)
The Blended Retirement System (BRS), introduced in 2018, combines a reduced pension with a Thrift Savings Plan (TSP) and government matching. Here’s a comparison:
| Feature | High-3 Retirement Plan | Blended Retirement System (BRS) |
|---|---|---|
| Pension Multiplier | 2.5% per year of service | 2.0% per year of service |
| TSP Matching | No automatic matching | Up to 5% government match |
| Lump-Sum Buyout | Not available | Optional mid-career lump sum |
| Eligibility | Pre-2018 enlistees | Post-2018 enlistees (opt-in available for some) |
Which One is Better?
The answer depends on individual circumstances:
- High-3 is better for those who serve 20+ years due to the higher pension.
- BRS is better for those who may not complete 20 years due to TSP benefits.
Calculating Retirement Pay: A Deeper Look
Let’s break down the High-3 calculation further. Assume a Lieutenant Colonel (O-5) retires after 24 years with a High-3 average of $8,500/month.
Retirement\ Pay = (24 \times 0.025) \times \$8,500 = 0.60 \times \$8,500 = \$5,100/monthIf the same officer served 30 years, the calculation would be:
Retirement\ Pay = (30 \times 0.025) \times \$8,500 = 0.75 \times \$8,500 = \$6,375/monthEarly Retirement (Reserve/Guard Considerations)
Reserve and National Guard members can retire earlier but with reduced benefits until age 60 (or earlier if deployed). The formula adjusts as:
Reduced\ Retirement\ Pay = (Years\ of\ Service \times 2.5\%) \times High-3\ Average \times (1 - Early\ Retirement\ Penalty)Tax Implications of Military Retirement Pay
Military retirement pay is federally taxable but may be state-tax-free depending on residency. For example:
- Texas, Florida, and Nevada do not tax military pensions.
- California and Virginia tax military retirement income.
Example: Tax Impact on a $3,000 Monthly Pension
If a retiree lives in California (9.3% state tax), they would pay:
Annual\ State\ Tax = \$3,000 \times 12 \times 0.093 = \$3,348/yearIn contrast, a retiree in Texas pays $0 in state taxes on the same pension.
Survivor Benefits and Life Insurance
The Survivor Benefit Plan (SBP) allows retirees to allocate a portion of their pension to a surviving spouse. The cost is 6.5% of the chosen base amount.
For a retiree with $3,000/month pension electing full coverage:
SBP\ Cost = \$3,000 \times 0.065 = \$195/monthThe surviving spouse would then receive 55% of the pension:
Survivor\ Benefit = \$3,000 \times 0.55 = \$1,650/monthInvestment Strategies to Supplement Military Retirement
While the High-3 pension is stable, inflation can erode purchasing power over time. I recommend:
- Maximizing TSP Contributions – Even under High-3, TSP offers tax-deferred growth.
- Roth IRA Conversions – Tax-free withdrawals in retirement.
- Real Estate Investments – Passive income through rental properties.
Example: TSP Growth Over 20 Years
Assume a service member contributes $500/month to TSP with a 7% annual return:
Future\ Value = \$500 \times \frac{(1 + 0.07)^{240} - 1}{0.07} \approx \$260,000Combined with a $3,000/month pension, this creates a robust retirement.
Final Thoughts
The Army’s old retirement plan remains one of the most secure pension systems available. However, smart financial planning—such as tax optimization, SBP decisions, and supplemental investments—can enhance long-term stability. If you’re under the High-3 system, maximize its benefits while diversifying with other retirement vehicles.




