11 Needs vs Wants Budget Worksheets (And Teaching Help) - Money Prodigy CFPB's Analyzing Budgets Worksheet Suggested Age: 13-19 years Students learn about the 50%/30%/20% (needs/wants/financial goals) rule of budgeting (one of many rules), and then are asked to figure out what sort of costs in a budget are needs, which are wants, and which are financial goals.