Simple & Compound Interest, NPV & IRR Calculator

Enter the starting investment, annual rate, term, and cash flows to compare simple versus compound growth together with discounted cash-flow metrics.

Diğer diller: ja | en | zh-CN | es | pt-BR | id | vi | ko | fr | de | it

Analyse simple and compound present/future values alongside net present value (NPV) and internal rate of return (IRR). Save scenarios with the shareable URL or keep them handy via the favourites button.

Inputs

Cash flows for NPV/IRR

Use a negative amount at period 0 for the initial outlay, then positive inflows or additional investments for later periods. Periods are annual by default.

Results

Results are provided for educational use only. Taxes, fees, and product-specific conditions are not considered—please verify decisions with a qualified adviser.

FAQ

What is the difference between simple and compound interest?

Simple interest applies the rate to the original principal only. Compound interest reinvests each period's interest so the balance accelerates over time. Reviewing both side by side helps you gauge the opportunity cost of not compounding.

Why can't the IRR be calculated?

IRR requires at least one negative and one positive cash flow. Some patterns produce multiple IRRs or none at all, so the solver may fail to converge. Adjust the cash flows or rely on the NPV table to compare scenarios.

İlgili hesaplayıcılar

Nasıl hesaplanır

  • Faiz: basit I = P·r·t; bileşik A = P(1 + r/n)^(n·t); sürekli A = P·e^(r·t).
  • NPV indirgenmiş nakit akışlarının toplamıdır; IRR, NPV=0 yapan orandır (sayısal).
  • Sonuçlar görüntü hassasiyetine yuvarlanır; URL parametreleri saklar.

How it's calculated