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401(k) Calculator Examples With Solutions

Review three checked 401(k) examples for employer matching, a zero-growth reconciliation, age-based catch-up limits, and long-term growth.

How should you use these 401(k) Calculator examples?

These examples turn the 401(k) Calculator inputs into complete scenarios with stated values, calculation steps, and interpreted results. Use them to check how the calculator behaves, compare your own situation with realistic cases, and identify which inputs have the greatest effect before relying on an estimate.

Four 401(k) Calculator Examples

These scenarios use the same engine as the 401(k) Calculator. They demonstrate a basic match, an arithmetic reconciliation, age-based catch-up limits, and a long-term projection.

Example 1: Employee Contribution and Employer Match

With a $100,000 salary, a 10% employee rate, and a 50% match up to 6% of eligible salary, the employee contributes $10,000 and the illustrative employer match is $3,000.

D=100,000(0.10)=10,000D=100{,}000(0.10)=10{,}000
M=0.50min⁡(10,000,100,000(0.06))=3,000M=0.50\min(10{,}000,100{,}000(0.06))=3{,}000

This assumes the entered compensation and annual-additions limits do not reduce either amount.

Example 2: Zero-Growth Reconciliation

Start with $10,000 and repeat the Example 1 deposits for two years. Set salary growth, return, fee, and inflation to zero.

10,000+2(10,000+3,000)=36,00010{,}000+2(10{,}000+3{,}000)=36{,}000
Ending balance$36,000.00
Employee contributions$20,000.00
Employer match$6,000.00
Investment growth-$0.00

This is an independent arithmetic check for deposit reconciliation.

Example 3: Editable 2026 Catch-Up Limits

With catch-up modeling enabled, the default employee limits vary by age.

Age 49$24,500.00
Age 50$32,500.00
Age 60 through 63$35,750.00
Age 64$32,500.00
24,500+8,000=32,50024{,}500+8{,}000=32{,}500
24,500+11,250=35,75024{,}500+11{,}250=35{,}750

Catch-up contributions must be permitted by the plan. The projection does not determine Roth catch-up treatment.

Example 4: Long-Term 401(k) Projection

The default starts at age 35 with $75,000, a $100,000 salary, a 10% contribution, a 50%-up-to-6% match, 3% salary growth, 7% return, a 0.25% fee, and retirement at 65.

Projected balance$2,192,925.06
Employee contributions$475,754.16
Employer match$142,726.25
Investment growth$1,499,444.65
Fees deducted$57,767.89
Fee drag$116,520.60
Today's-dollar balance$1,045,460.98
Illustrative monthly income$7,309.75

Actual returns, fees, salary, plan limits, employer deposits, and tax treatment can change.

Compare the 401(k) Examples

ExampleQuestionKey result
Employer matchHow are first-year deposits calculated?$10,000 employee + $3,000 employer
Zero growthDo deposits reconcile?$36,000.00
Catch-up limitsHow does age affect the entered cap?$35,750.00 maximum shown
Long-term projectionHow might deposits and returns combine?$2,192,925.06

Reproduce the Results

  1. Open the 401(k) Calculator and select Reset.
  2. For Examples 1 and 2, use a $100,000 salary, 10% employee contribution, and 50% match up to 6%.
  3. For Example 2, use ages 35 and 37, $10,000 current balance, and set growth, return, fee, and inflation to zero.
  4. For Example 3, keep catch-up enabled and compare ages 49, 50, 60, and 64.
  5. For Example 4, reset and calculate with the shared defaults.

References

These references support the calculation method, assumptions, or current program guidance.

Corrections and Review

Report an issue or error in the calculator using the Contact Us page.

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