Calculating the interest rate using the present value formula can at first seem impossible. However, with a little math and some common sense, anyone can quickly calculate an investment's interest ...

Perpetuities pay a fixed annual sum; interest rate calculated by dividing payment by price. Example: $5,000 annual perpetuity for $60,000 has an 8.33% interest rate. Validate investment value using ...

To find an investment's interest rate, substitute price, face value, and duration into a formula. For T-bills, subtract purchase price from face value, divide by face value, adjust for term. Online ...