In: Finance
Lisa just won $2.5 million in the state lottery. She is given the option of receiving a lump sum $1.3 million now, or she can elect to recieve $100,000 at the end of each of the next 25 years. If Gabrielle can earn 5% annually on her investments, which option should she take? Please provide formula used to solve answer.
We will calculate the PV of annual payments of $100,000 for 25 years @5% and then we will compare this | |||||||
PV with lump sum payment today i.e. $ 1,300,000. | |||||||
PV of annuity | |||||||
P = PMT x (((1-(1 + r) ^- n)) / r) | |||||||
Where: | |||||||
P = the present value of an annuity stream | To be calculated | ||||||
PMT = the dollar amount of each annuity payment | $ 100,000 | ||||||
r = the effective interest rate (also known as the discount rate) | 5% | ||||||
n = the number of periods in which payments will be made | 25 | ||||||
PV of annuity | = PMT x (((1-(1 + r) ^- n)) / r) | ||||||
PV of annuity | = 100000*(((1-(1 + 5%) ^- 25)) / 5%) | ||||||
PV of annuity | $ 1,409,394.46 | ||||||
Options | Present value | ||||||
1 | $ 1,300,000.00 | ||||||
2 | $ 1,409,394.46 | ||||||
As we can see that the PV of 2nd options i.e. annual payment for 25 years is higher than lump sum payment so option 2 should be selected. | |||||||