When it's time for a new credit card or if you're financing a large purchase, you need to know your debt-to-income ratio.

When you borrow money, you’ll also pay interest on top of the amount you borrowed.. Interest is the money the lender gets for loaning you the money. Read Next: 5 Subtly Genius Moves All Wealthy People ...

The 80% rule gives retirees a rough idea of how much they'll need annually in retirement. The 4% rule can help you decide how much you'll need in total in retirement. Using resources such as ...

Debt can be scary. It’s not uncommon to have some form of debt in life, be it student loans, medical bills, personal loans, or credit card debt. Figuring out your debt-to-income ratio can help you see ...