Career Gap Cost Calculator
Estimate the total financial cost of a career break including lost salary, retirement contributions, and career trajectory.
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How to use this calculator
- 1
Enter your current annual salary and the planned duration of your career break in months.
- 2
Set your expected salary when you return to work.
- 3
Add your annual salary growth rate (what you would have received without the break) and retirement contribution percentage.
- 4
Review the total financial cost broken down into lost salary, retirement contributions, and career trajectory loss.
Frequently asked questions
What formula gives the total cost?
Total = lost salary + lost retirement contributions + career trajectory gap. Lost salary is current salary × gap months ÷ 12. Lost retirement contributions are that lost salary × the combined contribution rate. The trajectory gap is the projected no-gap salary minus your expected return salary, floored at zero. With the defaults that is $65,000 + $3,250 + $1,950 = $70,200.
How is the career trajectory gap calculated?
The tool grows your current salary at the annual growth rate for the length of the gap, as (1 + rate) raised to months ÷ 12. It subtracts your expected return salary. If the answer is positive, that single year’s difference counts as a cost; if you expect to return at or above the projected salary, the gap is zero. Only one year back at work is counted, not the rest of your career.
Why can the trajectory gap show zero?
Because it is floored at zero. In a 24-month gap with a $65,000 salary and 3% growth, the projected salary is $68,959. If you expect to return at $75,000 the gap is $0, and the tool gives no credit for the higher pay. The lost salary and retirement figures are unchanged.
What does the retirement rate represent?
It is the total retirement contribution rate, yours plus your employer’s, as a share of salary. The tool multiplies it by the lost salary during the gap, so at 5% a $65,000 lost salary produces $3,250. It does not add the investment growth those contributions would have earned, and it does not distinguish between your contributions and the employer’s.
Is taking time off treated as a pure loss?
Yes, in this arithmetic. It does not subtract costs you avoid by not working, such as commuting or childcare. It also ignores any income during the break, benefits, taxes and savings, and it does not value what the break is for. Treat the result as a gross income-based figure.
What happens when I enter zero?
Zero is taken literally. A gap of 0 months returns $0 across the board, and a growth rate or retirement rate of 0 removes that component. Clearing a box counts as 0 as well, so an emptied salary box gives $0 across the board, and an emptied return salary box counts the whole projected salary as the trajectory gap ($66,950 total on the other starting values).
Are salary and results in a particular currency?
The results show a dollar sign, but nothing in the formula depends on the currency. If you enter amounts in another currency, the numbers scale the same way, and no tax or exchange rates are applied.
Does salary growth apply to the lost salary itself?
No. Lost salary uses the current salary, held flat for the whole gap. The growth rate is used only to project what your salary would have become by the end of the gap, for the trajectory gap.
Career gap cost: lost pay, retirement contributions and the return-salary gap
The three components of the total
The tool adds three pieces. Lost salary is simply what you would have earned during the gap, current salary × months ÷ 12. Lost retirement contributions are a percentage of that salary. The career trajectory gap compares what your salary would have reached with continuous employment against the salary you expect when you return, and counts the shortfall for one year. The monthly cost shown is the total divided by the gap months.
Worked example: a 12-month gap on the defaults
With a $65,000 salary, a 12-month gap, a $65,000 return salary, 3% growth and a 5% retirement rate, lost salary is $65,000 and lost retirement contributions are $3,250. The projected salary without a gap is $66,950, so returning at $65,000 leaves a trajectory gap of $1,950. The total is $70,200, or $5,850.00 per month of the gap.
Four scenarios compared
The table shows how the total responds to the gap length, the return salary, the growth rate and the retirement rate. The first row is the default case, and each other row changes the inputs described in the first column. Check the third row in particular: a return salary above the projected salary makes the trajectory gap $0.
| Inputs | Lost salary | Lost retirement | Trajectory gap | Total |
|---|---|---|---|---|
| $65,000, 12 months, return $65,000, 3%, 5% | $65,000 | $3,250 | $1,950 | $70,200 |
| $90,000, 6 months, return $85,000, 4%, 8% | $45,000 | $3,600 | $6,782 | $55,382 |
| $65,000, 24 months, return $75,000, 3%, 5% | $130,000 | $6,500 | $0 | $136,500 |
| $65,000, 18 months, return $60,000, 0%, 0% | $97,500 | $0 | $5,000 | $102,500 |
Worked example: a shorter break with higher stakes
A $90,000 earner who takes 6 months off, expects to return at $85,000 and would have grown 4% a year, loses $45,000 in salary and $3,600 in retirement contributions at an 8% combined rate. The projected salary without a gap is $91,782, so the trajectory gap is $6,782. The total is $55,382, which is $9,230.39 per month of the gap.
How to use the result
The total is a measure of income forgone, not a verdict on whether the break is worthwhile. Change the return salary and the growth rate to see how sensitive the trajectory gap is, and keep in mind that expenses saved, benefits and tax effects are not part of the calculation. Comparing the monthly cost across different gap lengths also shows how the fixed return-salary gap spreads thinly over a long break and heavily over a short one.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →