TSP Contribution Limits & Strategies for 2026
How Much Should You Contribute to TSP?
The short answer: at least 5% of your basic pay to get the full agency match. But optimal contributions depend on your age, income, and retirement goals.
2026 TSP Contribution Limits
| Contribution Type | 2026 Limit | 2025 Limit |
|---|---|---|
| Employee Deferral (under 50) | $23,500 | $23,000 |
| Catch-up (age 50+) | $7,500 | $7,500 |
| Total Employee + Agency | $70,000 | $69,000 |
| Age 60-63 Special Catch-up | $11,250 | $11,250 |
Sources: OPM.gov, IRS.gov (2026 limits)
Agency Matching Formula Explained
Your agency matches your contributions based on this formula:
- First 3% of pay: Dollar-for-dollar match (100%)
- Next 2% of pay (3%-5%): 50 cents per dollar (50% match)
- Above 5%: No agency match
- Agency match on first 3%: $60,000 × 3% = $1,800
- Agency match on next 2%: $60,000 × 2% × 50% = $600
- Total agency match: $2,400
Recommended Contribution by Age
Age 20-35: Start Strong
- Minimum: 5% to get full match
- Recommended: 10-15% of salary
- Why: Time is your biggest advantage. Compound growth over 30+ years can turn modest contributions into substantial wealth.
Age 35-50: Accelerate Savings
- Minimum: 10% of salary
- Recommended: 15-20% of salary
- Why: You're in peak earning years. Increase contributions with every raise or promotion.
Age 50+: Maximize Contributions
- Minimum: 15% of salary
- Recommended: Max out both regular and catch-up limits
- Why: Limited time to recover from market downturns. Aggressive saving is critical.
Catch-Up Contributions: Your Secret Weapon
If you're age 50 or older, you can make additional "catch-up" contributions beyond the standard limit.
Regular Catch-up (Age 50+)
Contribute an extra $7,500 per year on top of the $23,500 base limit, for a total of $31,000 in employee deferrals.
Special Catch-up (Age 60-63)
Under SECURE 2.0 Act, workers aged 60-63 can contribute the greater of $11,250 or 150% of the regular catch-up amount. This means up to $11,250 extra for those in this age window.
Traditional vs Roth TSP: Where to Contribute?
You can split your contributions between Traditional (pre-tax) and Roth (after-tax) TSP. Here's how to decide:
| Factor | Choose Traditional | Choose Roth |
|---|---|---|
| Current Tax Bracket | High (24%+) | Low (12% or below) |
| Expected Retirement Tax | Lower than now | Higher than now |
| Career Stage | Peak earnings | Early career |
| Best Strategy | Split contributions for tax diversification | |
Common Mistakes to Avoid
❌ Not Contributing Enough to Get Full Match
If you contribute less than 5%, you're leaving free money on the table. Even if you can't afford much, prioritize getting the full match before other financial goals.
❌ Forgetting About Annual Increases
Set a calendar reminder to increase your contribution rate by 1% every year or whenever you get a raise. Small increases compound significantly over time.
❌ Ignoring the Roth Option
Many federal employees stick with Traditional TSP out of habit. If you're in a low tax bracket now (early career, military deployment, etc.), Roth contributions may save you thousands in taxes later.
❌ Stopping Contributions During Market Downturns
Market declines are actually the best time to keep contributing—you're buying shares at discounted prices. Stay the course and maintain your contribution rate.
How to Change Your TSP Contribution
- Log in to your account at tsp.gov
- Click "Contributions" in the left menu
- Select "Change Amount"
- Enter your new contribution percentage or dollar amount
- Allocate between Traditional and Roth (if desired)
- Review and confirm your changes
Changes typically take effect within 1-2 pay periods, depending on your agency's payroll processing schedule.
Calculate Your Optimal TSP Contribution
Use our TSP calculators to model different contribution scenarios and see how small increases today can dramatically impact your retirement balance.