This calculator will estimate the annual growth of your income based on your anticipated annual cost of living (COL) increases.
It will then add up all of your forecasted annual incomes, giving you the grand total of all of the income you will earn from working between now and when you retire.
The purpose of this calculator is to make you aware of just how much money you (and your spouse/mate, if applicable) will have the opportunity to manage between now and when you retire.
And the point this calculator will attempt to make, is that if it turns out you end up broke at retirement age, it won't be because you didn't make enough money. It will be because you did not successfully manage the abundance of income (potential wealth) you worked so hard to earn.