What regular payments add up to by a future date
Enter payment per period, return rate per period, number of periods and payment growth per period to work out the what regular payments add up to by a future date.
Put the same amount away each period and this is what you finish with. The first payment compounds for the whole term. The last one earns nothing at all. Stack those up and the total lands well above the sum of what you paid in.
Keep the rate on the same footing as the period. Paying in monthly means a monthly rate, near enough 0.5% a month for 6% a year.
Growth starts at zero, which is the plain annuity. Raise it and every payment is a little larger than the one before, as a contribution tied to a salary would be. Payments are taken at the end of each period and the rate is held flat.