For many senior military officers, the first five years after service are the most important tax planning window of their lifetime.

This period often determines:

The risk is not a single bad investment decision.
The risk is structural tax compression.

What Is Tax Compression?

Tax compression occurs when multiple income streams begin simultaneously and push a retiree into higher marginal brackets — eliminating flexibility before it can be used.

For senior officers, compression often results from:

Military retired pay is fully taxable as ordinary income at the federal level. (IRS Publication 525) Without intentional sequencing, this layering can permanently increase lifetime tax exposure.

Why the First Five Years Matter

Before age 73, Required Minimum Distributions (RMDs) from traditional retirement accounts are not mandatory. (SECURE 2.0 Act; IRC §401(a)(9)) This creates a limited window where income can be strategically managed.

However, once pension begins, second-career income ramps, and investment income grows, the opportunity for strategic Roth conversion or bracket management may narrow significantly. For many officers, once second-career income is fully established, the Roth conversion window effectively closes.

Structure first. Optimization second.

The Pension Effect

Military retired pay begins immediately upon retirement (active duty) or at eligible age (reserve component). It is taxable at the federal level, subject to state taxation depending on residency, and adjusted annually for COLA. (DFAS; IRS Publication 525)

That guaranteed income floor is powerful. It is also bracket-filling. Every dollar of pension income consumes lower marginal tax space — reducing the room available for tax-efficient withdrawals, conversions, or other income management strategies.

Roth Conversions: Timing Matters

Roth conversions are taxed as ordinary income in the year converted. (IRS Publication 590-B) If performed before second-career income accelerates, during lower-income transition years, and prior to RMD age, they may reduce lifetime tax burden and future RMD exposure.

If delayed until full civilian income is layered in, conversions may become inefficient or entirely unavailable. The sequencing window is finite — and most officers underestimate how quickly it closes.

State Tax Relocation: Often Misunderstood

Some states fully exempt military retired pay. Others partially exempt it. Some tax it fully. State taxation varies — see individual state revenue departments for current exemption status.

Relocation decisions should consider pension taxation, civilian income taxation, property tax, estate tax laws, and total cost of living. Relocation for tax reasons alone often produces less savings than expected when modeled comprehensively. The relevant analysis is total post-tax income, not pension exemption status alone.

The TSP Factor

Traditional TSP balances are tax-deferred. Roth TSP balances are tax-free if qualified. (IRS Publication 590-B; Thrift Savings Plan regulations)

Without early planning, large traditional balances may generate substantial RMDs beginning at age 73, which can trigger Medicare Part B and D premium surcharges (IRMAA). (Social Security Administration; Medicare IRMAA guidelines) Tax compression compounds in later retirement if not addressed early.

Where This Fits in the ILS Decision Sequencing System™

Tax compression planning falls under Step 4 of the ILS framework — but it cannot be executed without completing the earlier steps first. Investment allocation is optimized only after tax sequencing is defined.

ILS Decision Sequencing System™

  1. Establish Income Floor
  2. Map Lifetime Benefit Streams
  3. Pressure-Test Irreversible Decisions
  4. Sequence Tax Buckets ← Tax compression addressed here
  5. Contain Fragility
  6. Optimize Return

The Structural Reality

For senior officers: pension fills lower brackets, civilian income compresses remaining space, large TSP balances create future RMD risk, and delay eliminates optionality.

The first five years after service are often the most powerful tax planning opportunity available. After that window closes, flexibility declines — not because of bad investments, but because income structure has become fixed.

Frequently Asked Questions

Statutory & Regulatory Sources

Written by Matt Samson, Founder & President of ILS Financial.

Former Marine aviator specializing in high-income and military transition planning.

Model Your Tax Compression Window

The variables that determine your Roth conversion opportunity are specific to your separation timing, pension level, and second-career income. A fit meeting is the right place to work through them.

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The information contained herein is for general informational purposes only and is not intended to provide specific tax, legal, or financial advice. No strategy discussed is guaranteed to produce any particular tax result. Federal and state tax laws are subject to change. Consult a qualified tax or legal advisor regarding your individual circumstances. Advisory services offered through ILS Financial, LLC, an Investment Advisor in the State of Nebraska.