Your Financial Timeline
Choose a financial goal, run the numbers forward and backward, and write a reflection on what the formula changes about how you think about money.
Using what you've learned, build a personal financial timeline. You don't need to use real numbers from your life — choose amounts that feel plausible.
Step 1: Choose a financial goal
Pick something realistic and specific.
- •Save enough to buy a used car outright by age 25 ($8,000–$15,000)
- •Build a down payment for a house by age 35 ($40,000–$80,000)
- •Retire by 65 with enough to live on ($500,000+)
Step 2: Pick your numbers
Choose a target amount (A), a realistic annual return rate (r), and the number of years until your goal (t). For reference: 6–8% is typical for long-term index fund investing over time; 0.5% or less is typical for a regular bank savings account.
Step 3: Run the numbers
Use P = A ÷ (1 + r)^t to find how much you'd need to invest today as a single lump sum. If that seems out of reach, adjust t — give yourself more time — and watch how dramatically the required lump sum changes.
Step 4: Reflect
Write a short reflection (one page or so): What surprised you most about running these numbers? Did the formula change how you think about any financial decision? What would you tell your 12-year-old self, if you could?
There's no single right goal or right answer. The exercise is in running the numbers and sitting with what they tell you.