Who it's for
Startup CFOs, founders and fractional CFOs reporting to a board.
What's in it
- Cash in the bank and months of runway
- Net burn (3-month average) and gross burn
- Burn multiple
- Cash and net burn over the last 12 months
The prompt
Works in Claude, ChatGPT, Gemini and Copilot. Fill in the [brackets], then paste your data under it.
Build a cash, burn and runway dashboard from the monthly numbers below. - Tiles: month-end cash, net burn this month, average net burn (last 3 months), months of runway (cash ÷ average net burn). - Chart: month-end cash and net burn for the last 12 months. - One sentence under the chart explaining what changed this month. My data: [paste month, ending cash, cash in, cash out for 12 months] Build it as ONE self-contained HTML file: - Put all the data inside the file. No API calls, no fetch, no external data. - Use plain HTML, CSS and JavaScript (inline SVG for charts is fine). If you need a chart library, load it from cdn.jsdelivr.net. - Add a "data as of" date under the title. - Make it readable on a laptop and print cleanly to one page if possible.
Data you need
- Month-end cash balances
- Monthly cash in and cash out (or net burn) for 12 months
Make it and share it
- Gather the numbersExport or copy: Month-end cash balances; Monthly cash in and cash out (or net burn) for 12 months.
- Paste the promptCopy the prompt into Claude, ChatGPT, Gemini or Copilot, fill in the brackets and paste your data under it.
- Check itTie the totals back to your source reports before anyone else sees it.
- Put it on the fridgeUpload the HTML file to Dashfridge, or connect your AI and say "put this on the fridge". Publish it and invite your team.
Keep it current
How often: Monthly, after the close. Add it to the board pack. Update the same dashboard each time instead of sending a new file, so your team keeps one link and every past version is kept. Your AI can do the refresh for you: see dashboards that update every week.
Common questions
How do you calculate runway?
Cash on hand divided by average monthly net burn (cash out minus cash in). Many teams use a 3-month average so one unusual month doesn't swing the number.