A GS-13 with 25 years of service, a solid TSP balance, and retirement eligibility in 18 months should have a straightforward path forward. In practice, the decisions stack up fast: survivor benefit elections that lock in at retirement, Roth versus traditional TSP contributions that shift with each year’s tax bracket, FEHB enrollment continuity rules that hinge on a five-year lookback, and Social Security claiming choices that interact with everything else. Getting any one of these right in isolation is manageable. Getting them right together, in the correct sequence, is where federal retirement planning earns its reputation for complexity.
This guide covers what federal employees need to know heading into 2026, including updated TSP contribution limits, key benefit coordination points, and the questions worth asking before you finalize anything.
What Is Federal Employee Retirement Planning?
The Federal Employees Retirement System (FERS) provides benefits from three sources: the Basic Benefit Plan (your pension annuity), Social Security, and the Thrift Savings Plan. OPM frames these as a coordinated package, though in practice, many federal employees plan each piece separately and miss the interactions between them.
Effective federal employee retirement planning means treating all three legs of FERS as one income system. That includes modeling how your annuity start date affects TSP withdrawal timing, how Social Security claiming age changes your tax bracket in early retirement, and how FEHB premiums factor into your net cash flow. It also means accounting for decisions that are difficult or impossible to reverse after retirement, like survivor benefit elections.
Common Planning Areas
Federal retirement planning typically touches these topics, each of which interacts with the others:
Retirement timing and eligibility tradeoffs. MRA+10, early optional, and deferred retirement each carry different annuity reduction rules and FEHB eligibility implications.
Survivor benefit elections. Choosing between full, partial, or no survivor annuity affects your monthly pension amount and your spouse’s long-term income security.
TSP contribution and investment strategy. Choosing between Lifecycle (L) Funds and individual fund allocations (G, F, C, S, I), and deciding how much goes to Roth versus traditional.
Withdrawal sequencing. Determining which accounts to draw from first (pension, TSP, taxable, Roth) to manage taxes across a 25-to-30-year retirement.
Tax bracket management. Coordinating Roth conversions, Social Security timing, and pension income to reduce lifetime tax liability.
FEHB and Medicare coordination. Understanding how Medicare Part B enrollment timing interacts with your federal health benefits in retirement.
2026 TSP Contribution Limits
The IRS adjusts TSP contribution limits annually. For 2026, the numbers federal employees need to plan around are:| Limit Type | 2026 Amount | IRC Reference | Notes |
|---|---|---|---|
| Elective deferral limit | $24,500 | IRC 402(g) | Combined traditional + Roth |
| Catch-up (ages 50–59 and 64+) | $8,000 | IRC 414(v) | After reaching deferral limit |
| Catch-up (ages 60–63) | $11,250 | SECURE 2.0 | Max total: $35,750 |
| Annual additions limit | $72,000 | IRC 415(c) | All contributions combined |
Source: TSP Bulletin 25-3
The elective deferral limit of $24,500 applies to your combined traditional and Roth TSP contributions. Catch-up contributions are available in the year you turn 50 or older, but only after you reach the elective deferral limit.
The enhanced catch-up for ages 60 to 63 ($11,250) is a SECURE 2.0 provision. If you turn 60, 61, 62, or 63 during 2026, you can contribute up to $35,750 total. TSP contributions are reported based on pay date, not the date they post to your account — adjust your elections early enough to account for pay period timing.
The Pay-Date Nuance
TSP contributions count toward IRS limits based on your pay date, not the date the contribution posts to your account. For employees trying to max out contributions at year-end, a December paycheck with a January pay date could push those dollars into the following year’s limit. TSP Bulletin 25-3 explicitly flags this distinction, and it catches people off guard during the final pay periods of the year.
Matching Contributions and the Annual Additions Limit
Your agency’s matching contributions (up to 5% of basic pay for FERS employees) do not count against the $24,500 elective deferral limit. They do, however, count toward the $72,000 annual additions limit. For most federal employees, the annual additions cap is not a binding constraint, but it becomes relevant if you contribute to multiple defined contribution plans in the same calendar year (for example, if you change jobs mid-year).
TSP Investment Basics
The Thrift Savings Plan offers five individual funds and a series of Lifecycle (L) Funds. The individual funds are the G Fund (government securities), F Fund (bonds), C Fund (large-cap equities tracking the S&P 500), S Fund (small- and mid-cap equities), and I Fund (international equities).
L Funds are diversified mixes of all five individual funds, with target allocations that shift quarterly to become more conservative as the target date approaches. L Funds also rebalance daily back to their target allocations. Choosing between L Funds and a custom mix of individual funds is one of the more common questions federal employees bring to an advisor, and the right answer depends on your other accounts, risk tolerance, and how actively you want to manage allocations across your full portfolio.
For households where one spouse has a TSP and the other has a 401(k) or IRA, the asset allocation decision is not just about what is inside the TSP. Tax location (which types of investments sit in which accounts) can meaningfully affect after-tax returns over a long time horizon. A bond-heavy TSP paired with an equity-heavy Roth IRA, for example, produces a different tax outcome than the reverse.
FERS Annuity and Retirement Timing
Your FERS basic annuity is calculated using your high-three average salary, years of creditable service, and a multiplier (1% per year, or 1.1% if you retire at age 62 or older with at least 20 years of service). The interaction between retirement age and annuity formula creates real tradeoffs.
Retiring under MRA+10 (minimum retirement age with at least 10 years of service) triggers a 5% annuity reduction for each year you are under age 62 at retirement. That reduction is permanent unless you postpone the annuity start date. The difference between retiring at 57 under MRA+10 versus waiting until 60 under the standard voluntary retirement rules can be tens of thousands of dollars annually, compounded over a multi-decade retirement.
Special Category Employees
Law enforcement officers, firefighters, air traffic controllers, and certain other positions are subject to special retirement provisions with earlier eligibility ages and enhanced annuity calculations. If you are in a covered position, your retirement math differs substantially from the standard FERS formula, and the rules for transitioning between covered and non-covered positions during a career add additional complexity. Verify your coverage category and eligibility through your agency’s HR office or directly with OPM.
Survivor Benefit Elections
The survivor benefit election is one of the most consequential and least reversible decisions in federal retirement. Under FERS, you can elect a full survivor annuity (50% of your unreduced annual benefit to your surviving spouse), a partial survivor annuity (25%), or no survivor annuity. Choosing a survivor annuity reduces your monthly pension by a set percentage for as long as you live.
OPM’s survivor benefit resources explain the mechanics and eligibility rules. Once you retire, changing or canceling a survivor benefit election requires specific forms and is subject to strict conditions. In most cases, the election is effectively permanent. Comparing the cost of the annuity reduction against alternatives (like term life insurance) is a standard part of retirement planning for federal employees, and the analysis depends on your spouse’s age, health, other income sources, and FEHB eligibility.
Military Buyback
Federal employees with prior military service can “buy back” that time and have it credited toward their FERS annuity. The cost is 3% of military base pay for the periods being bought back (with interest accruing if the deposit is not completed before retirement). Military buyback can increase your annuity meaningfully, but it also interacts with Social Security: if you receive a military pension and buy back the same period for FERS credit, the rules require careful coordination. Start the process well before your planned retirement date, because obtaining earnings records and completing the deposit takes time.
FEHB Five-Year Rule and Medicare Part B Coordination
To carry Federal Employees Health Benefits (FEHB) coverage into retirement, you generally must have been continuously enrolled in FEHB (or covered as a family member under another enrollee’s FEHB) for the five years immediately preceding retirement. Gaps in coverage can disqualify you, and the consequences are significant: FEHB is often the most valuable non-pension benefit in federal retirement.
Medicare Part B Timing
When you turn 65 (or become eligible for Medicare due to disability), you face a decision about enrolling in Medicare Part B alongside FEHB. FEHB plans continue to cover retirees regardless of Medicare enrollment, but most FEHB plans reduce out-of-pocket costs for enrollees who also carry Part B. The tradeoff is paying the Part B premium (which is income-tested) in exchange for lower cost-sharing on medical claims.
Delaying Part B enrollment beyond your initial eligibility window triggers a late-enrollment penalty (10% per 12-month period you could have had Part B but did not), which lasts as long as you carry Part B coverage. Federal retirees do not qualify for the same Special Enrollment Period that private-sector retirees with employer coverage receive, so the timing decision requires careful analysis of your expected healthcare costs, FEHB plan design, and Part B premiums.
CSRS vs. FERS: Key Differences
| Feature | FERS | CSRS |
|---|---|---|
| Social Security Coverage | Yes | Generally no |
| TSP Agency Match | Up to 5% | No match |
| Annuity multiplier | 1% (1.1% at age 62+ with 20 years) | 1.5% to 2% depending on years |
| Survivor annuity maximum | 50% of unreduced annuity | 55% of unreduced annuity |
WEP/GPO Update for 2026
The Windfall Elimination Provision (WEP) and Government Pension Offset (GPO) are no longer in effect. The Social Security Fairness Act, signed January 5, 2025, eliminated both provisions. WEP previously reduced Social Security retirement benefits for individuals who also received a pension from non-covered employment (like CSRS). GPO reduced spousal or survivor Social Security benefits for the same group.
SSA reports that as of July 2025, over 3.1 million payments totaling $17 billion have been processed, including retroactive adjustments back to January 2024. If you are a CSRS retiree, CSRS Offset employee, or have a mixed-service history with periods of non-covered employment, your Social Security benefits may have increased or become newly available. Confirm your updated benefit amount through your My Social Security account, because the repeal changes retirement income projections for affected households.
For FERS employees who have always been covered by Social Security, the WEP/GPO repeal generally does not change your benefit calculation. The repeal primarily affects CSRS retirees and those with split service between covered and non-covered positions.
Roth Conversions: Mechanics and Considerations
Roth conversions involve moving money from a traditional (pre-tax) account to a Roth (after-tax) account, paying income tax on the converted amount in the year of conversion. For federal employees, the most common conversion scenarios involve traditional TSP or traditional IRA balances.
The strategic logic is straightforward: if you expect to be in a higher tax bracket later (due to Required Minimum Distributions, Social Security income, or pension payments stacking up), converting in a lower-bracket year can reduce your lifetime tax bill. The tricky part is identifying the right years and amounts.
When Conversions Tend to Make Sense
The window between retirement and age 73 (when RMDs begin for most retirees under current law) is often favorable for Roth conversions. During those years, your taxable income may drop before pension and Social Security payments are added together. Converting enough to “fill up” a lower tax bracket without pushing into a higher one is a common approach, though the calculation requires projecting income, deductions, and Medicare IRMAA thresholds for each year.
Important: the TSP does not allow direct Roth conversions of traditional TSP balances within the plan. To convert traditional TSP money to a Roth, you would typically need to roll the traditional TSP balance into a traditional IRA first, then convert it to a Roth IRA. This is a taxable event, and the mechanics matter for avoiding unintended tax consequences. Coordinate with a CPA or tax advisor before executing any conversion.
Withdrawal Sequencing and RMDs
The order in which you draw down accounts in retirement affects your tax bill every year of retirement, not just the first. A common (though not universal) approach is to draw from taxable accounts first, then traditional tax-deferred accounts, and preserve Roth accounts for last, since Roth withdrawals are tax-free and Roth accounts are not subject to RMDs during the original owner’s lifetime.
In practice, the “right” sequence depends on your pension income, Social Security timing, Roth conversion strategy, and state tax rules. A federal retiree with a FERS annuity and Social Security is already receiving two streams of taxable income, which means traditional TSP withdrawals stack on top and can push you into higher brackets faster than you might expect.
Required Minimum Distributions
Under current law, RMDs from traditional TSP and traditional IRA accounts begin at age 73 (for those born between 1951 and 1959) or age 75 (for those born in 1960 or later). RMDs are calculated based on your account balance and an IRS life expectancy factor, and they are taxed as ordinary income. If you have a large traditional TSP balance and have not done Roth conversions, RMDs can generate significant taxable income in your 70s and beyond, potentially increasing Medicare premiums through IRMAA surcharges and increasing the taxable portion of Social Security benefits.
Key Deadlines and Decision Windows
| Decision | When To Act | Consequence of Delay/Error | Reversible? |
|---|---|---|---|
| Survivor benefit election | Before retirement paperwork | Permanent annuity reduction; narrow reversal window | Very limited |
| FEHB enrollment continuity | 5 consecutive years before retirement | Loss of government-subsidized retiree coverage | No |
| Military buyback deposit | Before retirement; interest accrues | Interest compounds; higher cost the longer you wait | No |
| Medicare Part B enrollment | At age 65 or Special Enrollment Period | Permanent late enrollment penalty | No |
| TSP Roth vs. traditional | Mid-career is optimal window | Missed tax diversification in retirement | Partially |
| Social Security claiming age | 62–70 decision window | Up to 32% permanent reduction if claimed early | No |
| Roth conversions | Low-income years post-retirement | Higher RMDs and tax bracket in later years | No |
Questions to Ask Any Advisor About Federal Benefits
If you are evaluating whether to work with a financial advisor for federal retirement planning, these questions can help you gauge their familiarity with your benefits:
- Are you an investment adviser representative of a registered investment adviser? Where can I review your Form ADV?
- How is your compensation structured – fee-only, fee-based, or commission-based?
- Which federal benefits do you work with routinely: FERS, CSRS, mixed service, military buyback, survivor elections, FEHB?
- How do you integrate TSP with outside accounts for asset allocation and tax location?
- How do you coordinate Roth vs. traditional decisions with a CPA?
- What is the ongoing service cadence, and what triggers an interim review?
An advisor who cannot speak specifically to FERS annuity calculations, TSP fund mechanics, or FEHB continuation rules may not be the right fit for your situation, regardless of their general financial planning credentials.
Interested in Comprehensive Financial Planning With District Capital?
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Frequently Asked Questions
The 2026 elective deferral limit is $24,500 for traditional and Roth TSP contributions combined. Catch-up contributions add $8,000 if you are ages 50 to 59 or 64 and older, or $11,250 if you are ages 60 to 63. These limits come from TSP Bulletin 25-3 and reflect IRS annual adjustments.
No. The TSP does not currently allow you to convert traditional TSP balances to Roth within the plan. To execute a Roth conversion, you would roll traditional TSP funds to a traditional IRA first, then convert to a Roth IRA. The conversion is a taxable event, so coordinate with a tax professional.
The enhanced catch-up ($11,250 in 2026) applies in the calendar year you turn 60 through the year you turn 63. If you turn 64 in 2026, you revert to the standard catch-up limit of $8,000. Your HR/payroll system should apply the correct limit based on your date of birth, but it is worth confirming.
The Social Security Fairness Act signed in January 2025 permanently repealed both WEP and GPO. SSA has processed retroactive payments back to January 2024. If you have non-covered service (such as under CSRS), check your updated Social Security benefit statement.
You can keep FEHB without Part B, but most FEHB plans coordinate benefits with Medicare, meaning your out-of-pocket costs may be higher without Part B. Delaying Part B past your initial enrollment window also triggers a permanent late-enrollment penalty of 10% for each 12-month period you were eligible but not enrolled.
L Funds provide a diversified, automatically rebalancing mix of all five TSP funds based on a target retirement date. Individual fund selection gives you more control but requires you to rebalance manually and make allocation decisions. The choice depends on your comfort with managing your own allocation, your other investment accounts, and whether you want to coordinate tax location across multiple account types.
Not necessarily, but your advisor should demonstrate working knowledge of FERS (or CSRS), TSP mechanics, FEHB continuation rules, and survivor benefit elections. A generalist advisor who does not routinely handle these topics may miss interactions between your federal benefits and your broader financial plan. Ask directly about their experience with federal retirement cases before engaging.
Alvin Carlos, CFP®, CFA is a fee-only financial planner, in Washington, D.C. He has a Master’s degree in International Relations from SAIS-Johns Hopkins. Alvin is the founder of District Capital, a financial planning firm designed to help professionals in their 30s and 40s maximize their money and retire by 55, through holistic financial planning and research-driven investing. Schedule a free discovery call today.
