TSP withdrawal strategies for federal retirees
The Thrift Savings Plan is the cornerstone of the federal retirement system, sitting alongside the FERS basic benefit (pension) and Social Security in what OPM calls the “three-legged stool.” How you withdraw from your TSP in retirement determines not just your monthly income, but your tax burden, portfolio longevity, and financial flexibility for decades.
The TSP offers three withdrawal options: monthly payments (fixed or based on life expectancy), a single lump-sum payment, or a TSP life annuity (purchased through MetLife). You can also combine these — for example, take a partial lump sum to cover immediate needs and set up monthly payments for ongoing income. Since September 2019, the TSP has allowed multiple partial withdrawals and changes to monthly payment amounts, giving retirees significantly more flexibility than the old system.
Choosing a sustainable withdrawal rate
The withdrawal rate you choose is the single most important decision in retirement income planning. The widely cited 4% rule (from the 1998 Trinity Study) suggests that withdrawing 4% of your portfolio in year one, then adjusting for inflation, gives you a very high probability of not running out of money over 30 years.
For federal retirees, the calculus is different from the general population because you have guaranteed income from FERS pension and Social Security. These two income streams cover a significant portion of your expenses, which means your TSP only needs to fill the gap. This often allows federal retirees to use a lower withdrawal rate (3-3.5%), extending portfolio life well beyond 30 years — or a slightly higher rate if the guaranteed income covers most needs.
This calculator models five standard withdrawal rates (3%, 3.5%, 4%, 4.5%, 5%) so you can see the trade-off between monthly income and portfolio longevity at each level.
TSP fund allocation in retirement
The TSP offers five individual funds and 11 lifecycle (L) funds:
- G Fund — Government securities. Unique to TSP: earns the long-term Treasury rate with zero risk of principal loss. No equivalent exists in the private market.
- F Fund — Fixed income (Bloomberg U.S. Aggregate Bond Index). Similar to Vanguard Total Bond Market (VBTLX).
- C Fund — Common stock (S&P 500 Index). The workhorse growth fund. Similar to Vanguard 500 (VFIAX).
- S Fund — Small/mid-cap stock (Dow Jones U.S. Completion Total Stock Market Index). Covers stocks not in the S&P 500.
- I Fund — International stock (MSCI ACWI IMI ex USA ex China ex Hong Kong Index). Developed and emerging markets outside the US, excluding China and Hong Kong.
- L Funds — Lifecycle funds: L Income, and L 2030 through L 2075 in five-year steps. Each shifts from stocks to bonds as its target date approaches, then rolls into L Income.
In retirement, most financial planners recommend gradually shifting toward a more conservative allocation — increasing G and F Fund holdings while reducing C, S, and I exposure. However, with a long retirement horizon (25-35 years for someone retiring at 60-62), maintaining a meaningful equity allocation (40-60%) is important to outpace inflation. The L Income Fund's target mix in October 2026 was about 72% in the G and F Funds and 28% in stock funds (tsp.gov), and it is moving to new targets through 2028. Many planners consider that too conservative for early retirees.
Required Minimum Distributions under SECURE 2.0
The SECURE 2.0 Act (signed into law December 29, 2022) changed the age at which RMDs begin. If you were born before 1960, your RMD age is 73. If you were born in 1960 or later, it is 75. TSP RMDs start once you have reached that age and left federal service, so they wait if you are still working.
RMDs apply to traditional (pre-tax) TSP only. Your RMD each year is calculated by dividing your traditional balance on December 31 of the previous year by the IRS Uniform Lifetime Table factor for your age. At 73, the factor is 26.5, meaning you must withdraw approximately 3.77% of your balance. This percentage increases each year as the factor decreases.
The penalty for missing an RMD was reduced by SECURE 2.0 from 50% to 25% (or 10% if corrected within 2 years), but it is still severe enough to make compliance essential. The TSP will automatically calculate and distribute your RMD if you do not withdraw enough during the year.
Roth TSP and RMDs: Since 2024, Roth money in your TSP account is not subject to RMDs (SECURE 2.0 Act, section 325). Only your traditional balance counts, and only withdrawals from it count toward your RMD. You no longer need to roll your Roth TSP into a Roth IRA to avoid RMDs.
Roth TSP vs. traditional TSP in retirement
The tax treatment difference between traditional and Roth TSP is significant in retirement. Traditional TSP withdrawals are taxed as ordinary income — every dollar you withdraw adds to your taxable income for the year. This includes both your original contributions and all investment gains, since both went in pre-tax.
Roth TSP withdrawals are completely tax-free (both contributions and earnings), provided the account has been open for at least 5 tax years and you are over 59.5. This makes Roth TSP withdrawals invisible to the tax code — they do not increase your taxable income, do not affect Social Security taxation thresholds, and do not push you into a higher Medicare premium bracket (IRMAA).
A common strategy is to use traditional TSP withdrawals to fill the lower tax brackets (the 10% and 12% brackets in 2026 cover $24,800 and $100,800 of taxable income for married filing jointly), then use Roth TSP for any additional income needs. This keeps your marginal tax rate low while providing the income you need.
The FERS three-legged stool
Federal employees under FERS have three retirement income sources that work together:
- FERS basic benefit (pension) — 1% (or 1.1% if retiring at 62+ with 20+ years) of your high-3 average salary times years of service. It is paid for life. Cost-of-living increases start at 62 for most FERS retirees, and trail inflation when it runs above 2%. For a GS-13 with 30 years, this is typically $2,500-$3,200/month.
- Social Security — Based on your 35 highest earning years. Full retirement age is 67 for those born in 1960 or later. The average benefit for a federal retiree is typically $1,800-$2,400/month, depending on career earnings and claiming age.
- TSP — The variable leg. Unlike the pension and Social Security, TSP income depends entirely on your balance, investment returns, and withdrawal strategy. This is where planning has the biggest impact.
Use our FERS Pension Calculator to estimate your pension benefit and Social Security Calculator to estimate your SS benefit, then enter both values here to see your complete federal retirement income picture.
TSP rollover considerations
After separating from federal service, you can keep your money in the TSP, roll it to an IRA, or roll it to a new employer's plan. Each option has trade-offs:
- Keep in TSP: Low fees (total expense ratios of 0.034% to 0.051% in 2025), G Fund access, Roth in-plan conversions, simplicity. Fewer investment choices: 5 individual funds and 11 L Funds, plus a mutual fund window with extra fees and eligibility rules.
- Roll to traditional IRA: Wider investment choice and estate planning flexibility. Fees depend on the custodian.
- Roll Roth TSP to Roth IRA: Keeps tax-free status with wider investment choice. It is no longer needed to avoid RMDs: Roth TSP money has had none since 2024.
You can do partial rollovers: for example, move part of your balance to an IRA for wider investment choice while keeping the rest in the TSP for the G Fund and low fees.
Frequently asked questions
What is the best TSP withdrawal strategy?
Most federal retirees benefit from a combination approach: monthly TSP payments at a sustainable withdrawal rate (3.5-4%), supplemented by FERS pension and Social Security. Avoid the full lump-sum option — it creates a massive one-year tax bill. The TSP monthly payment option keeps your money invested in low-cost funds while providing predictable income.
When do RMDs start for TSP?
Your RMD age is 73 if you were born before 1960, or 75 if born in 1960 or later. TSP RMDs start once you have reached that age and left federal service. They apply only to your traditional (pre-tax) balance: Roth TSP money has had no RMDs since 2024.
Is TSP withdrawal taxed?
Traditional TSP withdrawals are taxed as ordinary income at your marginal rate. Roth TSP withdrawals are completely tax-free (contributions and earnings) if the account is 5+ years old and you are over 59.5. Strategic use of both accounts can minimize your lifetime tax burden.
Should I keep money in TSP or roll to an IRA?
TSP costs are among the lowest available (total expense ratios of 0.034% to 0.051% in 2025), and only the TSP has the G Fund. An IRA offers more investment options and estate planning flexibility. Rolling Roth TSP money to a Roth IRA is no longer needed to avoid RMDs, since Roth TSP money has had none since 2024.
How much can I withdraw from TSP without running out?
At a 4% withdrawal rate with 5% growth, a $400,000 TSP balance provides roughly $1,333/month and lasts approximately 30+ years. Federal retirees often need less from TSP because FERS pension and Social Security cover a large portion of expenses. Use this calculator to model your specific numbers.