Government workers can spend decades earning federal retirement benefits. So why do so many federal retirees end up paying more in taxes than they expected?
It often comes down to how the pieces were put together — or whether they were put together at all. The Federal Employees Retirement System (FERS) is a three-part system:
- Basic Benefit Plan (the pension)
- Thrift Savings Plan (TSP)
- Social Security
Each component has its own tax treatment, its own timing considerations, and its own effect on the others. When coordinated as a system, these three sources can work efficiently together. When they are not, gaps may form — and those gaps can be expensive come tax time.
How FERS Pension, TSP, and Social Security Are Taxed
Understanding the tax treatment of each income source is often the starting point for meaningful retirement income planning. Here are some important things to know:
FERS Pension
Your FERS pension is considered ordinary income at both the federal and Virginia state levels. The amount is predictable, which makes budgeting straightforward. However, once distribution begins, you can not adjust the amount received in a given year. Additionally, whatever your annuity pays is taxed as income and counts toward your total income for the year.
Traditional and Roth TSP
TSP withdrawals work differently depending on which portion of your account you are drawing from. Traditional TSP distributions are taxed as ordinary income at the federal and state levels.
However, Roth TSP withdrawals can be tax-free if the account has been open for at least five years and you are age 59½ or meet another qualifying condition.
One detail that surprises many federal employees is that every agency match goes into the traditional side of the TSP, regardless of how you have directed your own contributions. That means most federal retirees carry a taxable TSP balance into retirement, whether they intended to or not.
Social Security
Social Security has a more favorable treatment in Virginia, specifically. The state does not tax Social Security benefits, which is a meaningful advantage that creates real planning opportunities when you think about how to sequence other income sources around it. At the federal level, up to 85% of your benefit can become taxable depending on your provisional income, which includes pension income and traditional TSP withdrawals.
Three income sources, three different tax profiles, and potential room for coordination if the decisions are made together rather than separately.
Common Tax Mistakes Federal Retirees Make
Retirement income planning typically doesn’t break down because people are careless; instead, it often happens because decisions made without considering the full financial picture can be difficult to reverse later. Some common retirement income planning mistakes for federal employees include:
Assuming Retirement Brings a Lower Tax Bracket
One of the most common errors is assuming that retirement will automatically put you in a lower tax bracket. For federal employees, that assumption is often wrong. A FERS pension, Social Security, and TSP withdrawals frequently overlap in retirement in ways that push retirees into the same bracket they were in during their working years, and sometimes a higher one. The pension alone may cover basic expenses, but once TSP distributions and Social Security are layered on top, total taxable income can be higher than expected.
Not Considering Total Provisional Income
Another common mistake is failing to account for how traditional TSP distributions affect Social Security taxation. Every dollar drawn from a traditional TSP increases provisional income, which determines how much of your Social Security is subject to federal tax. A retiree who does not plan for this interaction may find that pulling from the TSP to cover a large expense pushes more of their Social Security into taxable territory, increasing their effective tax rate even if total spending has not changed.
Missing Required Minimum Distribution Calculations
Required minimum distributions (RMDs) create a third pressure point that is easy to underestimate. Under current law, traditional TSP balances are subject to RMDs beginning at age 73, with that age scheduled to increase to 75 in 2033. Once RMDs begin, the IRS determines how much taxable income must come out each year based on your account balance and life expectancy.
That required income can push you into higher tax brackets and increase how much of your Social Security is taxable. For those enrolled in Medicare Parts B and D, it can also trigger IRMAA surcharges that raise premium costs, though some federal retirees limit that exposure depending on how they coordinate Medicare with FEHB. The challenge is that by the time RMDs arrive, the window for proactive planning has often already closed.
Not Having a Cohesive Strategy
Treating TSP accounts, Roth assets, and any taxable brokerage accounts as three separate decisions rather than one coordinated plan is a common source of avoidable tax exposure. These vehicles interact whether you account for that interaction or not, and a withdrawal strategy that considers each account independently may perform worse over time than one that considers all three together.
Strategies to Reduce Lifetime Taxes
The objective of a tax-efficient withdrawal strategy is not to eliminate taxes but to control when income is recognized, keep that income at the lowest marginal rate reasonably achievable, and preserve enough flexibility to make adjustments as circumstances change.
Withdrawal sequencing is the foundation of that strategy. Because the FERS pension and Social Security provide income that you have limited ability to adjust, they form the baseline of your retirement income picture. TSP and Roth assets are where flexibility lives. A sequencing approach that strategically draws on a traditional TSP can help reduce lifetime taxes over a long retirement.
Strategic Roth usage matters more as retirement progresses. Roth balances do not count toward provisional income, do not affect Social Security taxation, and under current law are not subject to required minimum distributions. That makes Roth dollars particularly useful in years when other income is already elevated, or when legacy planning is a consideration. The practical goal is not to avoid the traditional TSP but to build enough Roth flexibility that you have options in the years when income control matters most.
Roth conversions in the early retirement window are one of the most underused strategies in federal retirement tax strategy. The years between retirement and age 73, when RMDs begin, often represent the best opportunity to convert portions of traditional TSP assets to Roth at a lower marginal rate. Beginning January 28, 2026, in-plan Roth conversions are available to all TSP participants, which means federal employees can restructure some of their tax exposure without moving assets out of the plan.
Tax bracket management is the ongoing discipline that ties the strategy together. Each year presents an opportunity to intentionally realize income up to a specific threshold rather than have distributions required at whatever rate applies. A multi-year strategy with year-by-year implementation gives retirees a degree of control over their lifetime tax bill that a purely reactive approach cannot provide.
When to Get Professional Help
The decisions that carry the most weight in federal retirement tend to be ones that are difficult or impossible to reverse. Social Security filing ages, survivor benefit elections, TSP withdrawal structure, and Roth conversion timing all fall into that category. Getting them right requires looking at each decision in the context of the others, which is harder to do accurately when benefits are evaluated one at a time.
A financial advisor who understands federal benefits and Virginia retirement income planning can help model how FERS, TSP, and Social Security can be coordinated for tax efficiency. These strategies are most valuable before retirement arrives — when contributions can still be adjusted, conversions considered, and withdrawals structured to reduce lifetime tax exposure rather than just manage it after the fact.
Contact Good Life Financial Advisors of NOVA
Every federal retirement looks different on paper, and the tax picture is rarely straightforward. If you’re ready to build a personalized, tax-efficient income plan around your specific FERS pension, TSP balance, and Social Security timing, schedule a free consultation with Good Life Financial Advisors of NOVA today!
Traditional IRA account owners have considerations to make before performing a Roth IRA conversion. These primarily include income tax consequences on the converted amount in the year of conversion, withdrawal limitations from a Roth IRA, and income limitations for future contributions to a Roth IRA. In addition, if you are required to take a required minimum distribution (RMD) in the year you convert, you must do so before converting to a Roth IRA.
This information is not intended to be a substitute for specific individualized tax advice. We suggest that you discuss your specific tax issues with a qualified tax advisor.
