If you invest $300 every month for the next 30 years at 1% return per month. What would your end portfolio value be? monthly return is 1% or annual return r= 12% monthly payment is $300 = PMT t= 30 years find how many monthly periods per year= n find how many total periods = nt Using your data above, find the solution to the Formula for Future Value of a Series = PMT *{[(1+r/n)(nt)-1]/(r/n)}