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Enter a lump sum, your expected annual return, and a time period. We’ll show you exactly how much your investment will be worth — powered by compound interest.
See how compound interest grows a one-time investment over time.
Serrari provides educational tools — we are not financial advisors. Results are estimates based on the inputs you provide.
The future value formula calculates how much a lump sum will grow over time when invested at a compound annual return. You multiply the principal by the growth factor (1 + r)n, which accounts for interest earning interest each year.
The higher the return rate and the longer the time period, the larger your future value — because compound interest creates exponential growth. This is the flip side of present value, which discounts future money back to today. Together, they form the foundation of time value of money analysis.
Use these rates as your expected return when projecting future value.
| Product | Typical Rate | Risk Level | Liquidity |
|---|---|---|---|
| Money Market Funds | 8 – 12% | Low | Next-day |
| Unit Trusts (Balanced) | 10 – 15% | Medium | 3–5 days |
| Treasury Bills | 14 – 17% | Very low | 91–364 days |
| Treasury Bonds | 12 – 14% | Very low | 2–25 years |
| Fixed Deposits | 6 – 10% | Low | 3–12 months |
| SACCO Savings | 8 – 14% | Medium | Varies |
| Equity Fund (Unit Trust) | 12 – 18% | High | 3–5 days |
See how different amounts grow over time at various return rates.
| Lump Sum | Rate | Timeline | Future Value |
|---|---|---|---|
| KES 100,000 | 10% | 5 years | KES 161,051 |
| KES 500,000 | 10% | 5 years | KES 805,255 |
| KES 1,000,000 | 10% | 5 years | KES 1,610,510 |
| KES 1,000,000 | 15% | 5 years | KES 2,011,357 |
| KES 1,000,000 | 10% | 10 years | KES 2,593,742 |
| KES 1,000,000 | 12% | 20 years | KES 9,646,293 |
Want to see how fast your money doubles? Try the Rule of 72 Calculator
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