ProToolBox

NPV and IRR Calculator Online

NPV and internal rate of return. Quick business math for margins, breakeven, or project cash flows-confirm in your books. Free, private, no account.

NPV and internal rate of return

Discount cash flows to NPV and IRR-capital budgeting sketches before a full model.

1 Paste or type cash flows · 2 Set discount rate · 3 Calculate NPV · 4 Build a fuller model offline

Result

Sketch-level NPV-assumes end-of-period flows; confirm methodology with finance.

Runs in this tab only-no server upload, no signup, no watermark.

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  • Works in your browser-runs on your device, not our servers
  • No upload required-your input stays in this tab
  • Free and instant
  • No account needed
  • Private by default-the same ProToolbox promise on every page

What this is for

NPV and IRR Calculator Online models scenarios privately: works in your browser, free and instant, no account needed. Loans, tips, VAT, interest-before the bank or accountant conversation.

  • Re-run when rates or assumptions change
  • Not financial advice-verify big decisions with professionals
  • Numbers stay in your tab until you copy
  • Stress-test best and worst case in one session

Scope: Exploration only-not a substitute for licensed guidance.

Bookmark for quick what-if checks-still confirm big decisions with professionals.

What Is This Tool?

Discount cash flows to NPV and IRR-capital budgeting sketches before a full model. Educational estimates-not financial, tax, or legal advice.

Why Use This Tool?

Model payments, growth, and margins before you open a spreadsheet or call a lender. You keep control of every assumption-then verify with official quotes, tax law, and licensed advisors.

When to Use It

Capital projects, equipment buys, or lease-vs-buy sketches before a full DCF model.

How It Works

  1. Enter revenue, costs, units, or cash-flow rows the tool requests.
  2. Calculate-margin %, breakeven units, NPV, IRR, or payback appears.
  3. Document assumptions (growth, discount rate) for stakeholders.
  4. Reconcile to accounting software before board decisions.

Features

  • Instant estimates after valid inputs
  • No bank linking required
  • No sign-up
  • Runs locally in your browser session
  • Copy-friendly numbers for spreadsheets
  • Free for personal and small-business what-if work

Understanding the Results

What it means: NPV discounts future cash flows; IRR is the rate that sets NPV to zero-both assume reinvestment logic your CFO may refine.

What to do next: Sensitivity-test discount rate and terminal growth; document cash-flow timing.

Best Practices

Next: compare loan payment, compound growth, and budget planning. Browse all tools.

Privacy: Dollar amounts you type stay in this browser. We do not receive your financial data on our servers for these calculators.

Disclaimer: This page provides general educational estimates. It is not financial, investment, tax, or legal advice. Consult licensed professionals before borrowing, investing, or filing taxes.

FAQ

  • Will my bank match this payment? Maybe-APR, fees, compounding, and day-count conventions differ; use official disclosures.
  • Do I need an account? No-free without registration.
  • Are tax results official? No-rates and brackets change; use IRS or local guidance and a CPA when it counts.
  • Investment guarantees? None-past performance does not predict future returns.
  • Mobile? Yes-plan on the go, then document on desktop.

Save this page-fast finance checks beat spreadsheet setup for quick what-ifs.

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