On The Money’s budget calculator makes it easy to determine how much you should be spending across the seven categories that make up any responsible budget. Regardless of income, tracking and limiting your overall spending is a foolproof strategy for keeping your accounts in the black. Though the percents will vary according to geography and personal situation, On The Money’s calculator gives you a quick glance at concrete spending targets that you can compare against your credit card bills and bank statements. Give it a try and tell us in the comments what other tools you use to control your spending.