# Return on Investment

> YogoQ Core AI-readable term handoff. Preview, read-only, Reviewed/Verified only.

- Canonical URL: https://core.yogoq.com/en-US/core/roi
- Locale: en-US
- Quality: reviewed
- Publication status: published_reviewed
- Schema version: core-reviewed-term-ai-handoff-v1
- Trust policy: core-trust-policy-v1-2026-06-22

## Short Definition

ROI measures investment efficiency by comparing return with the cost invested.

## 一言でいうと

ROI measures investment efficiency by comparing return with the cost invested.

## 計算方法

- Basic formula | ROI = (gain from investment - investment cost) / investment cost | Measures investment efficiency

## 含めるもの / 含めないもの

- Include | Investment cost, direct gain, period, required operating cost | They define efficiency
- Exclude | Unsupported future benefits, other initiatives' gains, unrecoverable assumptions | They overstate return

## 意味

ROI compares initiatives or investments on a shared basis. Period, cost scope, return definition, and risk must be aligned.

## 役立つ場面

- Use it to compare ads, hiring, systems, or improvement initiatives.

## 使い方のポイント

- Compare alternatives with the same period, cost scope, and return definition.

## 変動要因 / ドライバー

- Profit gain / cost reduction | Increases numerator | Raises ROI
- Investment cost / payback period | Denominator and time risk | Drives decision quality

## 判断するときの注意点

- High ROI still needs checks for scale, payback timing, and risk.

## よくある誤解 / 落とし穴

- Using only easy short-term gains can miss long-term risk and quality loss.

## 最小例

Example: investing 1 million yen and gaining 1.3 million yen gives 30% ROI.

## 似ている言葉との違い

- CAC | Customer acquisition cost | ROI measures broader investment efficiency
- Cash Flow | Cash movement | ROI is an efficiency ratio

## FAQ

### Can ROI alone decide an investment?

No. Also check payback, risk, cash flow, and strategic importance.

## Sources

- YogoQ Core business foundation editorial baseline

## Limitations

This page is reference information for research and learning. For accounting, legal, finance, health, security, or other individual decisions, confirm against primary sources or qualified professionals.

- Public pages support general understanding and practical context; they are not professional advice for individual cases.
- Fast-changing information such as regulations, accounting standards, prices, product specs, and legal requirements should be checked against primary sources before final decisions.
- Even when AI-assisted drafting or audit is used, publication relies on quality gates and human-readable evidence.