CATIGA Calculator
Use this Compound Accumulation Through Interest & Goal Analysis calculator to estimate how your savings can grow over time and whether you are on track for a target amount.
Enter your numbers and click Calculate to see your CATIGA projection.
What Is a CATIGA Calculator?
A CATIGA calculator is a practical planning tool for long-term saving and investing. It combines five useful ideas in one place: your starting amount, regular contributions, compound growth, inflation adjustment, and optional goal tracking.
Instead of guessing, you can quickly estimate where your money may end up in 5, 10, or 20 years. This is especially helpful if you are building wealth from small recurring deposits, like the classic “skip one daily purchase and invest it” strategy.
How This Calculator Works
Inputs You Control
- Starting Amount: the balance you already have today.
- Monthly Contribution: what you plan to invest each month.
- Annual Return: your expected average yearly growth rate.
- Time Horizon: the number of years you leave your money invested.
- Inflation Rate: used to convert future dollars into today’s purchasing power.
- Target Goal: an optional amount used to check if your plan reaches a milestone.
Outputs You Get
- Projected future value (nominal dollars)
- Total amount personally contributed
- Estimated investment growth
- Inflation-adjusted value (real purchasing power)
- Goal status and monthly contribution needed (if goal is set)
Why CATIGA Is Useful
Most people underestimate how powerful consistency and time can be. A CATIGA-style calculation makes compounding visible. Even moderate returns can create large differences when you give your money enough time and continue contributing every month.
It also helps with better decisions. If your target is not reachable with your current numbers, you can adjust one variable at a time—monthly savings, expected return assumptions, or timeline—and immediately see the impact.
Quick Example
Suppose you begin with $1,000, invest $250 monthly, and earn an average 7% annual return for 20 years. You can use this page to estimate your ending balance and compare that against a goal like $150,000. If you are short, the calculator will estimate how much more you should contribute each month.
Tips for Better Projections
1) Be conservative with returns
Using a slightly lower return assumption can protect you from overconfidence. It is usually better to be pleasantly surprised than disappointed.
2) Increase contributions with income
A small annual increase in monthly investing can improve your final result dramatically, often more than trying to chase higher-risk returns.
3) Revisit assumptions regularly
Inflation, goals, and income change over time. Review your plan every 6 to 12 months so your trajectory stays aligned with reality.
Common Mistakes to Avoid
- Ignoring inflation and focusing only on nominal balances
- Using unrealistic return assumptions
- Contributing irregularly or stopping after market drops
- Setting goals without a specific timeline
Bottom Line
The CATIGA calculator is not just a number tool—it is a decision tool. Use it to test scenarios, spot shortfalls early, and build a realistic path to your savings goals. The earlier you start and the more consistently you contribute, the more powerful compounding becomes.