Finance & Money
401(k) Annual Limit Calculator
Cap the planned salary-based employee contribution at the entered employee limit, subtract year-to-date deferrals, and compare employee-plus-employer funding with the entered combined limit.
Planned full-year employee contribution-
Employee contribution after entered limit-
Remaining employee contribution capacity-
Contribution per remaining paycheck-
Employee plus employer contribution-
Remaining entered combined-limit headroom-
Permitted employee contribution as salary share-
Decision view
Annual 401(k) contribution-limit controls
Annual 401(k) contribution-limit controlsPlanned, permitted, year-to-date, remaining, and combined amounts are explicitly compared.
Exact scenario comparisonPlanned employee deferral (%) changes while all other entered assumptions remain constant.
| Planned employee deferral (%) | Planned full-year employee contribution | Employee contribution after entered limit | Remaining employee contribution capacity | Contribution per remaining paycheck | Employee plus employer contribution | Remaining entered combined-limit headroom | Permitted employee contribution as salary share |
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How to use 401(k) Annual Limit Calculator
- Enter limits for the correct tax year and participant.
- Reconcile year-to-date employee contributions across applicable plans.
- Confirm remaining payroll periods and employer funding.
Calculator guide
Understanding 401(k) Annual Limit Calculator
Annual contribution planning requires separate employee-deferral and combined-plan limits, year-to-date contributions, and remaining payroll opportunities.
Calculation method
How the calculation works
Apply entered employee and combined plan limits to the planned salary-based contribution and show remaining payroll capacity. Calculate planned salary deferral, limit it to the entered employee ceiling, derive remaining capacity and per-paycheck need, then test combined funding against its separate ceiling.
Limit controls
Reconcile the year before setting payroll
Use the annual limit as a control total across completed and remaining pay periods.
Worked situations
Practical examples
- A high deferral percentage may be capped by the employee limit.
- Reaching the employee limit too early can affect match timing in plans without a true-up.
- The combined limit includes more than employee deferrals.
Better inputs
Useful tips
- Verify catch-up treatment separately.
- Check whether bonuses are eligible compensation.
- Avoid front-loading before understanding the match true-up.
Before relying on the result
Limitations and common mistakes
- Current-law eligibility, catch-up rules, compensation ceilings, ownership, corrections, and multiple-plan aggregation are excluded.
- Entered limits are not validated.
- Payroll systems may cap contributions differently.
Reference
Key terms
- Employee limit
- Entered annual ceiling applied to employee elective deferrals.
- Combined limit
- Entered ceiling for employee and employer plan additions represented here.
- Headroom
- Unused capacity below an entered limit.
- True-up
- Plan feature that may restore match missed because of uneven contribution timing.
Important note
Calculated from the entered values and stated financial terms. It is not a product quote, lending decision, tax filing, or investment recommendation.
Frequently asked questions
Are annual limits built into the calculator?
No, they are entered so the page can be used for the relevant year.
Does the combined limit include employer money?
Yes, in this model.
Does it include catch-up contributions?
Only if the entered limits are prepared accordingly; use the catch-up calculator for a separate view.
Why show effective deferral rate?
It reveals the permitted contribution as a share of salary after the cap.