A cumulative cost and benefit chart with the month the two lines cross marked as payback
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Proposal ROI calculator

Build a return the CFO can check, using the buyer's own numbers. No borrowed benchmarks, and every assumption on the page.

Free calculator · Saves in your browser · No sign-up

Everything you type stays in this browser. Nothing is sent to Closewell.

Made with the free Proposal ROI Calculator from Closewell Studio · closewellstudio.com/resources

How to use it

  1. Enter the full cost, including anything the buyer pays on their side.
  2. Add each benefit with the buyer's own numbers, and note where each one came from.
  3. Set a confidence level you could defend to their finance team.
  4. Check the conservative case. That's the one most CFOs read first.
  5. Print the CFO page and put it in your proposal.

Questions

What confidence level should we use?

Whatever you could defend line by line. If a benefit depends on behavior change, lower it.

Should we show the conservative case to the buyer?

Yes. A modest return the CFO can check is more persuasive than a big one they can't.

Can the buyer change the numbers?

In a live web proposal, yes. That's one of the add-ons we build for clients.