Calculating employer contributions isn’t really complicated. View the 90-second video for a simple explanation of how to calculate 403(b) employer contribution limits using two figures from your W-2.
Your contribution limits are also subject to IRS maximum contribution limits as noted below according to your age as of the end of the calendar year.
Under age 50:
The total contribution limit (employee and employer) is $70,000.
The employee deferral portion is limited to $23,500.
Age 50-59 or over age 63:
The total contribution limit (employee and employer) is $77,500.
The employee deferral portion is limited to $31,000.
Age 60-63:
The total contribution limit (employee and employer) is $81,250.
The employee deferral portion is limited to $34,750.
*Remember, there must be $1 of Includible Compensation for every $1 of Employer Contribution.
Under age 50:
The total contribution limit (employee and employer) is $72,000.
The employee deferral portion is limited to $24,500.
Age 50-59 or over age 63:
The total contribution limit (employee and employer) is $80,000
The employee deferral portion is limited to $32,500**.
Age 60-63:
The total contribution limit (employee and employer) is $83,250
The employee deferral portion is limited to $35,750**.
*Remember, there must be $1 of Includible Compensation for every $1 of Employer Contribution.
**If FICA income in Box 3 on the 2025 W-2 is greater than $150,000, then the catch up contribution must be designated as Roth.