Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Westend61 / Getty Images The annualized income installment method calculates estimated tax ...

Marshall Hargrave is a stock analyst and writer with 10+ years of experience covering stocks and markets, as well as analyzing and valuing companies. Dr. JeFreda R. Brown is a financial consultant, ...

Companies use the percentage of sales method to turn a revenue forecast into a full forecast of business activity, helping them make decisions on such things as purchasing, hiring and capital ...

The Rule of 72 is a basic mathematical formula to determine the approximate doubling time of various items. We use this tool to find our desired portfolio yield as income investors. Core holdings and ...

Before 1985, Social Security benefits were not subject to federal taxes. Beneficiaries received their full amount without deductions. However, this changed, and now, for retirees with higher incomes, ...