How Much Does a 61-Year-Old Federal Retiree Need in the TSP to Collect $8,000 a Month With a Pension?

A 61-year-old federal retiree with a $70,000 annual pension already covers most of an $8,000 monthly budget. The Thrift Savings Plan only has to fill the rest, and that reduces the required balance a lot.

Annualized, $8,000 per month comes to $96,000 a year. That is above the $81,905 the average U.S. household spent in 2025. Take away the pension and the TSP has to produce $26,000 a year. Divide that gap by your withdrawal rate and you get the balance you need.

Three Withdrawal Rates, Three Very Different Balances

Conservative: 3.5% Requires About $743,000

$26,000 divided by 0.035 equals roughly $743,000. Inside the TSP, this usually means a stock-heavy mix of the C, S and I Funds, with the G Fund as ballast. The draw stays below what a diversified portfolio has typically earned over long stretches, so the principal can keep growing and the withdrawal can rise with it. Safe money pays well right now too: the 10-year Treasury yields 5%. This level needs the most capital and carries the least risk of running dry.

Moderate: 6% Requires About $433,000

$26,000 divided by 0.06 equals roughly $433,000. No TSP fund yields 6%, so getting there means selling shares or rolling part of the balance into an IRA that holds REITs, preferred shares, covered call funds or high-dividend equity funds. The tradeoff: income growth stalls, covered call strategies cap your upside and the payout falls behind inflation over a 30-year retirement.

Aggressive: 10% Requires About $260,000

A 10% draw needs just $260,000 to produce $26,000 a year. Business development companies (BDCs), mortgage REITs, leveraged covered call funds and high-yield bond funds live here, all outside the TSP. Distribution cuts happen often, and principal tends to erode. In practice, you spend the asset down rather than living off its growth.

Your Pension Shrinks While Your Gap Grows

Your pension has an inflation problem. Under FERS, nondisabled retirees under the age of 62 do not receive COLAs, and those COLAs are limited if the rate of inflation is greater than 2.0%. Prices for older households keep rising. The BLS research index for Americans 62 and older went from 354.8 in November 2025 to 368.8 in October 2026.

So the TSP has to cover a growing gap, and that favors the low-withdrawal level. Assume, just for example, the 3.5% portfolio’s income grows 8% a year: $26,000 becomes about $52,000 in nine years. The 10% portfolio’s $26,000 stays flat or falls. Only the first can make up for a pension that loses ground. (We made the full case against the old 4% rule, and the income-first approach that replaces it, in a free guide here.)

Taxes Cut Your $8,000 Before It Arrives

The IRS treats FERS benefits and Thrift Savings Plan payouts as generally taxable ordinary income. The exception is the small part of your annuity that returns your own contributions. Roth TSP balances follow their own rules.

For tax year 2026, a married couple filing jointly deducts the $32,200 standard deduction and ends up with $63,800 of taxable income. The 22% rate only applies over $100,800, so they stay in the 12% bracket. Estimated federal tax comes to about $7,160, which leaves roughly $7,403 a month.

A single filer deducts $16,100, leaving $79,900 taxable, well into the 22% bracket, which starts over $50,400. Federal tax comes to about $12,290, which leaves roughly $6,976 a month before state tax. If you need $8,000 after tax, the gap and the balance both get bigger.

Health Coverage From 61 to 65

You can keep FEHB in retirement only if you have been enrolled in FEHB for the five years before retirement. Medicare starts at 65. The standard Part B premium is $202.90 a month in 2026. Income-based surcharges start above $109,000 for single filers and $218,000 for joint filers, so $96,000 stays under both lines.

3 Moves Before You Pick a Withdrawal Rate

1. Decide whether your monthly budget is gross or net: At the single-filer numbers above, you lose about $1,000 a month to federal tax. If $8,000 has to land in your checking account, rerun the gap with that tax added in.

2. Model your pension at 62, 67 and 75: You get no COLA until 62, and the COLA is capped after that. Estimate what $70,000 will buy in each decade, then size your TSP to cover the larger future gap instead of today’s $26,000.

3. Tie your withdrawal level to your Social Security taking age: Social Security comes later, and once it starts, the TSP gap reduces or disappears. A higher withdrawal for a few years before you claim is a different plan from a 10% draw for life. Map both on paper before you move money out of the TSP.

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