A second job or a midyear career change can make a retirement saver feel as though a fresh workplace plan brings a fresh contribution ceiling. Federal tax law treats the employee deferral limit as an individual cap across the covered plans. In 2026, that creates a $24,500 coordination problem for anyone moving among a 401(k), 403(b) and the federal Thrift Savings Plan.
The $24,500 ceiling follows the worker
The IRS’s official 2026 retirement-limit announcement sets the employee contribution limit at $24,500 for 401(k) plans, 403(b) plans and the federal TSP. These are elective salary deferrals: money the worker directs from pay into the plan, whether on a pre-tax basis or as designated Roth contributions.
The number is not multiplied by the number of employers. IRS guidance on participating in more than one retirement plan says the individual limit must be aggregated for 401(k) and 403(b) plans and other covered arrangements. A worker who puts $14,500 into a former employer’s 401(k) has only $10,000 of ordinary 2026 deferral room left for a new 403(b) or TSP, before any permitted catch-up amount.
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Payroll systems do not share a single dashboard
Each plan administrator generally knows what entered that plan, not what the participant deferred somewhere else. The new employer may therefore keep accepting payroll contributions even after combined deferrals cross the federal limit. Responsibility for tracking the total can fall on the worker, especially when unrelated employers and different recordkeepers are involved.
A practical ledger records every year-to-date pre-tax and Roth employee deferral from each pay statement. Employer matching and nonelective contributions belong in a different column because they are governed by separate annual-addition rules. Rollovers also do not consume the annual elective-deferral limit. Combining those categories into a single “contributions” number is a common way to either stop too early or exceed the wrong cap.
Catch-up room can sit above the ordinary limit
Workers age 50 or older generally have additional catch-up space if their plan permits it. The IRS set the general 2026 catch-up amount at $8,000 for most 401(k), 403(b) and TSP participants, with a higher $11,250 limit for eligible workers who are age 60 through 63 during the year. Eligibility, plan terms and the required tax treatment of some catch-up contributions can affect execution.
Catch-up capacity does not erase the need to coordinate plans. A saver eligible for an $8,000 catch-up should track the ordinary $24,500 layer and catch-up layer separately. The TSP’s own contribution-limit guidance emphasizes that participants with another employer plan must monitor combined contributions. A late-year change to payroll percentages may be necessary to capture a full match without overshooting the personal limit.
A 457(b) is the important exception
Governmental 457(b) plans generally have a separate deferral limit rather than sharing the 401(k)/403(b) individual ceiling. That can create substantial extra savings capacity for a public employee who has both a 403(b) and 457(b). The exception is one reason plan labels matter: “two workplace plans” does not answer whether the limits combine.
SIMPLE and SARSEP arrangements have their own dollar limits and coordination rules, while employer contributions may be tested under broader plan limits. A high saver with several plan types should have the administrator or a tax professional map each contribution to the applicable section before assuming every account has independent room.
Excess deferrals need an early correction
IRS guidance warns that an excess not distributed by the applicable correction deadline can face unfavorable tax treatment, including taxation when contributed and again when later distributed. The worker should notify plan administrators promptly, identify the amount and request a corrective distribution rather than waiting until a tax return is nearly due.
The cleaner strategy is preventive: total employee deferrals after every payroll cycle, leave a small margin for the final check, and adjust the last elections once exact compensation and match rules are known. The official $24,500 figure is generous, but it is one personal ceiling across these three plan families, not three separate invitations to defer $73,500.
Matching formulas create a final coordination wrinkle. Stopping contributions too early at one employer can forfeit a match that is calculated each pay period, while front-loading at a plan with a year-end true-up can work differently. A worker changing jobs should obtain both plans’ match formulas before deciding where the remaining deferral room belongs. The tax ceiling answers how much can be deferred, not which payroll produces the most employer money.
Year-end forms provide a check but arrive after payroll has closed. Box 12 codes on each W-2 identify several types of elective deferrals and can be totaled during tax preparation. That review is useful for detecting an excess, yet pay-statement tracking during the year preserves the better options: changing an election, capturing the last match and avoiding a corrective distribution altogether.
This article was researched and drafted with AI assistance and reviewed against the linked primary sources.
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Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
