Ariel Courage is an experienced editor, researcher, and former fact-checker. She has performed editing and fact-checking work for several leading finance publications, including The Motley Fool and ...

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 ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Dr. Melody Bell is a personal finance expert, entrepreneur, educator, and researcher. Melody ...

Net present value (NPV) represents the difference between the present value of cash inflows and outflows over a set time period. Knowing how to calculate net present value can be useful when choosing ...

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 ...

In the world of finance, an annuity is a contract between you and a life insurance company in which you give the company a lump sum or series of payments, and in return, the insurer promises to ...

After you retire, your income will mainly come from savings and Social Security. However, annuities provide an additional steady income stream to help you enjoy your golden years with greater ...

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 ...