2026 TSP Contributions: Keep Your Year-End Match

As the final months of 2026 approach, a quick review of your Thrift Savings Plan payroll election can help you avoid reaching your contribution limit before your last paycheck. For eligible FERS employees and Blended Retirement System participants, matching contributions depend on what you contribute in each pay period.

The goal is to pace contributions around your applicable limit, remaining pay dates, and household budget. Year-end TSP contribution planning is about keeping the match available to you while saving an amount you can afford, not assuming everyone needs to contribute the annual maximum.

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Understand the government's 5 percent contribution

For participants eligible for the full contribution structure, the government provides an automatic contribution equal to 1 percent of basic pay. Matching adds dollar-for-dollar contributions on the first 3 percent you contribute and 50 cents per dollar on the next 2 percent. Contributing 5 percent therefore earns a 4 percent match, plus the automatic 1 percent.

That total is a contribution measured against basic pay, not a guaranteed 5 percent investment return. Eligibility and service requirements apply, particularly under BRS. CSRS employees do not receive the FERS agency match.

USDA's National Finance Center guidance emphasizes contributing throughout the year to receive the maximum match. If you reach your applicable limit early and employee contributions stop, the match stops for those remaining pay periods. The automatic 1 percent generally continues for eligible participants. Do not rely on an annual true-up to replace missed matching contributions.

Check which 2026 limit applies to you

The IRS published these 2026 elective deferral and catch-up amounts:

Under age 50: $24,500 in regular elective deferrals.
Age 50 or older, outside the higher catch-up ages: an additional $8,000, for a combined $32,500.
Turning 60, 61, 62, or 63 during 2026: a higher catch-up allowance of $11,250 instead of $8,000, for a combined $35,750.

Traditional and Roth employee deferrals share the applicable limit. Agency contributions do not use up your employee elective deferral limit. Other annual limits can matter in special circumstances, including some uniformed-services contributions.

For catch-up-eligible participants, reaching $24,500 does not necessarily stop deductions. TSP's spillover process can treat further contributions as catch-up contributions, subject to eligibility and the combined limit. Review contributions to other employer plans too; payroll may not know everything you contributed elsewhere.

Review the Roth catch-up requirement

TSP's 2026 participant education explains that some higher earners must make catch-up contributions as Roth. The relevant 2025 wage threshold for the 2026 requirement is more than $150,000. Confirm the applicable wage measure and payroll treatment rather than using your current salary or total household income as a substitute.

This requirement concerns catch-up contributions, not an automatic conversion of your existing traditional balance. Check your election and take-home-pay expectations with payroll before the regular limit is reached, especially if you have been directing contributions entirely to traditional TSP.

Use actual pay dates to calculate the remaining room

Start with a recent earnings statement and confirm when a new election will take effect. Ask payroll which remaining paychecks count toward 2026; the dates on a pay-period calendar alone may not answer that question.

A useful starting calculation is your applicable annual limit minus employee contributions already credited and any deductions that will occur before the new election takes effect. Divide the remaining room by the paychecks that the new election will affect. Then check whether the result preserves at least a 5 percent contribution in each eligible pay period.

For example, someone with a $24,500 limit, $20,000 already counted, and six remaining affected paychecks would have $4,500 of room, or $750 per paycheck. This assumes no additional pending deductions or shared-limit contributions elsewhere. Whether $750 preserves the full match depends on that person's basic pay.

If the calculation leaves too little room to contribute 5 percent in every remaining period, contact payroll promptly to understand what can still be changed. Avoid assuming a later election can undo matching already missed.

Confirm the change after payroll processes it

Save your election confirmation and review the next earnings statement. Check the employee deduction, traditional/Roth treatment, year-to-date total, and government contributions. Recalculate if pay changes or a deduction differs from what you expected.

Keep near-term expenses and emergency savings in the decision. An annual maximum is a limit, not a requirement. The right contribution level must work alongside insurance costs, debt payments, and your retirement timeline.

Connect this year's saving to your retirement plan

Internal Benefit Advisors helps federal employees review TSP considerations, retirement eligibility, benefit estimates, and insurance decisions. An IBA TSP guidance session can help organize the questions to discuss with payroll and place savings decisions alongside your projected annuity and household spending.

Bring a recent pay statement, contribution history, and proposed retirement date to a retirement benefit review. Clear records make it easier to compare realistic options before the last paychecks of the year.