TSP Calculator (Thrift Savings Plan)

2026

Calculate TSP contributions, agency match, and projected balance for federal employees and military.
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Contribution Type
TSP Type
FERS Agency Match

Projected Balance

$790,050.63

Your Annual Contribution

$8,500.00

Agency Match / Year

$5,100.00

Contribution Summary

Your Annual Contribution$8,500.00
Agency Match (Annual)$5,100.00
Total Annual$13,600.00
Total Contributions (20 yrs)$220,000.00
Total Agency Match (20 yrs)$102,000.00
Investment Growth$468,050.63

TSP Fund Comparison

C Fund (S&P 500) (10.5% avg)$1,279,471.52
S Fund (Small Cap) (10.8% avg)$1,334,359.87
I Fund (International) (7.5% avg)$845,507.00
G Fund (Government) (3.5% avg)$497,554.24
F Fund (Fixed Income) (4.5% avg)$566,436.36
L Fund (Lifecycle) (8.0% avg)$905,199.59

Use the TSP Calculator (Thrift Savings Plan) above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Our TSP Calculator helps federal employees and military personnel estimate their Thrift Savings Plan (TSP) contributions, agency matching funds, and projected retirement balance. Understanding these figures is crucial for effective retirement planning, allowing you to visualize your financial future and make informed decisions about your savings strategy. With 2026 contribution limits and agency matching rules integrated, you can get a realistic projection of your TSP growth.

This calculator uses your input for salary, contribution percentage, and investment growth rate to project your TSP balance. It incorporates the 2026 elective deferral limit of $23,000 for regular contributions and the catch-up contribution limit of $7,500 for those aged 50 and over. The agency match calculation follows the standard 1% automatic contribution plus a dollar-for-dollar match on the first 3% contributed, and 50 cents on the dollar for the next 2% contributed (up to 5% total personal contribution).

Remember that investment growth rates are estimates; actual returns can vary significantly. Don't forget to factor in inflation when considering the future purchasing power of your projected balance. A common mistake is not contributing at least 5% to receive the full agency match, leaving free money on the table.

Example: John Doe's TSP Projection

  1. 1 John, a 35-year-old federal employee, earns a base salary of $75,000 annually. He contributes 10% of his salary to his TSP and expects an average annual investment return of 6%. He plans to retire at age 62.
  2. 2 The calculator will first determine John's annual personal contribution ($75,000 * 10% = $7,500). It will then calculate the agency match ($75,000 * 5% = $3,750, assuming he contributes at least 5%). His total annual contribution will be $11,250. This amount, combined with his current balance and the 6% annual growth, will be projected forward to his retirement age of 62 (27 years).
  3. 3 Based on these inputs, John's projected TSP balance at age 62 is approximately $1,150,000.
  4. 4 This projection demonstrates the power of consistent contributions and the agency match over a long investment horizon. John's diligent saving habits and leveraging the full agency match significantly contribute to his substantial retirement nest egg.

Source: IRS · Last updated: April 2026

Frequently Asked Questions

How much can I contribute to the TSP in 2026?
The 2026 TSP elective deferral limit is $24,500, with an additional $7,500 catch-up for those aged 50 and older. The total annual addition limit (including agency contributions) is $72,000. FERS employees receive a 1% automatic agency contribution plus up to 4% match.
What TSP funds should I invest in?
The TSP offers five core funds: G (government securities), F (bonds), C (S&P 500), S (small/mid-cap stocks), and I (international stocks). The Lifecycle (L) funds automatically rebalance based on your target retirement date. Many advisors recommend a mix of C, S, and I funds for long-term growth.
Should I choose Roth TSP or Traditional TSP?
Choose Roth TSP if you are early in your career or expect higher taxes in retirement. Choose Traditional TSP if you are in a high bracket now and expect lower income in retirement. The agency match always goes into the Traditional TSP regardless of your election.

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