However, at tax time, it can be difficult to calculate your cost basis when you eventually decide to sell the shares you've accumulated over a lifetime of dividend reinvestment.

This can cause your score to dip — albeit temporarily — since being in the market for credit can be predictive for risk (as in, you might be in trouble and more likely to default on payments ...

Return on Investment (ROI) can help you determine how much you'll have for retirement. Here are key formulas and strategies to plan and maximize your financial future.