> For the complete documentation index, see [llms.txt](https://documentation.soulver.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.soulver.app/ja/rifarensu/money-and-finance/investments.md).

# 複利と投資

### 複利計算

```
$1,000 after 3 years at 7% | $1,225.04
```

デフォルトでは年複利が想定されますが、月次または四半期ごとの複利計算間隔を指定することもできます。

```
$1,000 for 3 years at 7% compounding monthly   | $1,232.93
$1,000 for 3 years at 7% compounding quarterly | $1,231.44
```

期間を通じて発生した利息のみを取得することもできます。

```
interest on $1,000 after 3 years @ 7%                      | $225.04
interest on $1,000 for 3 years at 7% compounding monthly   | $232.93
interest on $1,000 for 3 years at 7% compounding quarterly | $231.44
```

### 投資収益率 (ROI)

```
$500 invested $1,500 returned                                  | 2x
annual return on $1,000 invested $2,500 returned after 7 years | 13.99%
```

### 将来のお金の現在価値

```
present value of $1,000 after 20 years at 10% | $148.64
```