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5 Money Making Formulas

1. Compound Interest Formula:
A = P(1 + r/n)^(nt)

• Where:
  • A = Final amount
  • P = Initial principal
  • r = Annual interest rate (decimal)
  • n = Number of times interest is compounded per year
  • t = Time (in years)
• Application: Grow savings and investments exponentially over time.

2. Return on Investment (ROI):
ROI = (Net Profit / Cost of Investment) × 100

• Where:
  • Net Profit = Earnings from the investment minus the cost
• Application: Measure the efficiency and profitability of an investment.

3. Savings Growth (Future Value of Savings):
FV = P × [(1 + r)^t − 1] / r

• Where:
  • FV = Future value
  • P = Regular savings amount
  • r = Interest rate per period
  • t = Number of periods
• Application: Understand the growth potential of regular contributions to savings.

4. Debt-to-Income Ratio (DTI):
DTI = (Total Monthly Debt Payments / Monthly Gross Income) × 100

• Application: Ensure manageable debt levels and assess creditworthiness.

5. Break-Even Analysis:
Break-Even Point = Fixed Costs / (Price per Unit − Variable Cost per Unit)

• Application: Determine how many units of a product or service must be sold to cover costs and start generating profit.