IRR計算機
ニュートン・ラフソン法による内部収益率(IRR)を計算します。
返済スケジュール
| # | 支払い | 元金 | 利息 | 残高 |
|---|---|---|---|---|
最初の12件を表示中（全 ヶ月。
時間経過による成長
| 年 | 投資額 | 値 |
|---|---|---|
はじめに
IRR Calculator — Internal Rate of Return via Newton-Raphson. Enter Cash flows (comma separated, t=0 first) to get an instant, accurate result.
計算式
IRR is the discount rate r that makes NPV = 0, solved iteratively using Newton-Raphson.
ステップごとの説明
- Enter the Cash flows (comma separated, t=0 first).
- Click Calculate to see your result instantly.
実例
Example: With Cash flows (comma separated, t=0 first) = -10000, 3000, 4200, 6800, the IRR Calculator gives IRR Pct: 16.3406.
よくある質問
How is IRR different from ROI?
IRR accounts for the timing of cash flows and is expressed as an annualized rate, while simple ROI doesn't account for when money moves.
What if the calculator can't find a solution?
This can happen with unusual cash-flow patterns (e.g. no sign change); try adjusting the cash flow sequence.
What inputs does the IRR Calculator need?
You'll need to provide: Cash flows (comma separated, t=0 first). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the IRR Calculator?
The IRR Calculator applies the formula exactly as calculated — IRR is the discount rate r that makes NPV = 0, solved iteratively using Newton-Raphson. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Are these results guaranteed?
No. The IRR Calculator gives an estimate based on the numbers you enter and standard financial formulas — actual rates, fees, taxes, and terms vary by lender, institution, and jurisdiction, and can change over time. This is not financial advice; consult a qualified financial professional for decisions specific to your situation.
Is the IRR Calculator free to use?
Yes, the IRR Calculator is completely free, requires no signup, and runs instantly in your browser.
IRR計算機について
The IRR Calculator uses a real, verifiable formula — IRR is the discount rate r that makes NPV = 0, solved iteratively using Newton-Raphson. — so results are accurate every time, not an approximation.