Final answer:
You will need to contribute approximately $2,615.97 each year to your college fund to achieve your goal of $50,000 in 13 years, starting with $5,000 and earning 2% interest compounded annually.
Step-by-step explanation:
To calculate how much you need to contribute every year to have $50,000 in a college fund for your daughter in 13 years with an existing $5,000 at a 2% annual interest rate, we need to use the future value of an annuity formula:
The future value of an annuity formula is FV = P × {[(1 + r)^n - 1] / r}, where:
- FV is the future value of the annuity (the amount we want to have in the future, which is $50,000).
- P is the annual payment (the amount you will contribute every year).
- r is the annual interest rate (which is 2%, or 0.02).
- n is the number of years the money is deposited (13 years).
Since you already have $5,000, we first need to find out how much this amount will grow to in 13 years at an annual interest rate of 2%. That's calculated using the compound interest formula:$5,000(1 + 0.02)^{13} = $6,727.09
Now, subtract this future value of your initial savings from the goal:$50,000 - $6,727.09 = $43,272.91
This is the amount that needs to be reached with the annual contributions. Plugging this back into the future value of an annuity formula, we solve for P:$43,272.91 = P × {[(1 + 0.02)^{13} - 1] / 0.02}We can now solve for P, which is the annual contribution required:P = $43,272.91 / {[(1 + 0.02)^{13} - 1] / 0.02} = $2,615.97
Therefore, you'd need to contribute approximately $2,615.97 each year to reach your $50,000 college fund goal in 13 years, assuming a 2% annual rate.