Finance

In the post Twins and Investing, we discussed how, with a hypothetical annual interest rate of close to 6%, starting contributions early with a smaller total amount can tie at retirement age with someone who starts later but contributes significantly more. This scenario assumes a 35-year investing career. But does such an investment exist?

想像一下你和你的雙胞胎兄弟姐妹，每人每年投資10,000美元，但開始的時間不同。 你投資10年後停止，而你的雙胞胎在你停止後才開始，並一直投資到退休年齡。到65歲時，誰的總資產更多？年利率如何影響結果？

Imagine you and a twin each start investing $10,000 annually, but at different times. You contribute for 10 years and then stop, while your twin starts after you stop and contributes until retirement age. Who ends up with more money at age 65? How does the annual interest rate affect the outcome?