谢谢，不过是不是得改改计算？

1. Formula
ROI = (return - cost) / cost.
Return = (monthly rent - monthly expense) x 60
Cost = 100,000 + (monthly expense x 60)

2. Assumption
Rent = 1430,
Expense = 30% x 1430 = 430
Income Tax rate = 28%
After Tax Profit = (1430-430) x (1-28%) = 720

3. ROI = (720) * 60 / (100,000 + 430 * 60) = 34%
应为720已经把430去掉了，所以ROI是不是应该如下：
ROI = (720) * 60 / (100,000) = 43.2%
简单的APR是 43.2%/5 = 8.64%


4. Compare to S&P 100, 2001-2015 double in value.


此外，Rent $1,430的房子应该价值25万左右，只要投资5万，那么计算会是这样的：

Rent = 1430,
Expense = 30% x 1430 = 430
Income Tax rate = 28%
After Tax Profit = (1430-430) x (1-28%) = 720
ROI = (720) * 60 / (50,000) = 86.4%
简单的APR是 43.2%/5 = 17.28%

所有跟帖： 

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