Concept explainers
Tax-deferred annuities work like this: If, for example, you plan to set aside $400 per month for your retirement in 30 years in a tax-deferred plan, the $400 is not taxed now, so all of the $400 is invested each month. In a non deferred plan, the $400 is first taxed and then the remainder is invested. So, if your tax bracket is 25%, after you pay taxes, you would have only 75% of the $400 to invest each month. However, in the tax-deferred plan, all of your money is taxed when you withdraw the money. In the non deferred plan, only the interest that you have earned is taxed.
In Exercises 49-54, we give the amount you are setting aside in an ordinary annuity each month, your current tax rate, the number of years you will contribute to the annuity, and your tax rate when you begin withdrawing from the annuity. Answer the following questions for each situation:
a. Find the value of the tax-deferred and the non deferred accounts.
b. Calculate the interest that was earned in both accounts. This will be the value of the account minus the payments you made.
c. If you withdraw all money from each account and pay the relevant taxes, which account is better and by how much?
Monthly Payment | Number of Years | Annual Interest Rate | Current Tax Rate | Future Tax Rate |
$300 | 30 | 6% | 25% | 18% |
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Chapter 8 Solutions
Mathematics All Around-Workbook
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- 1. Iodine-131 is tone of the most commonly used radioactive isotopes of iodine. It is used to treat hyper- thyroidism and some kinds of thyroid cancer. (a) Iodine-131 has a half-life of about 8 days. Find an expression for I(t), the mass of Iodine-131 remaining after t days, in terms of t and Io, the initial mass of Iodine-131 present at time t = 0. (b) If a dose of 0.9 mg of Iodine-131 is administered, how much is still present after 24 hours? (c) How much Iodine-131 is present after one week? Does your answer make sense?arrow_forwardQuestion 2: When John started his first job, his first end-of-year salary was $82,500. In the following years, he received salary raises as shown in the following table. Fill the Table: Fill the following table showing his end-of-year salary for each year. I have already provided the end-of-year salaries for the first three years. Calculate the end-of-year salaries for the remaining years using Excel. (If you Excel answer for the top 3 cells is not the same as the one in the following table, your formula / approach is incorrect) (2 points) Geometric Mean of Salary Raises: Calculate the geometric mean of the salary raises using the percentage figures provided in the second column named “% Raise”. (The geometric mean for this calculation should be nearly identical to the arithmetic mean. If your answer deviates significantly from the mean, it's likely incorrect. 2 points) Starting salary % Raise Raise Salary after raise 75000 10% 7500 82500 82500 4% 3300…arrow_forwardd₁ ≥ ≥ dn ≥ 0 with di even. di≤k(k − 1) + + min{k, di} vi=k+1 T2.5: Let d1, d2,...,d be integers such that n - 1 Prove the equivalence of the Erdos-Gallai conditions: for each k = 1, 2, ………, n and the Edge-Count Criterion: Σier di + Σjeл(n − 1 − d;) ≥ |I||J| for all I, JC [n] with In J = 0.arrow_forward
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