intermediate 480 min

How to write a business plan with AI

Go from a rough idea to a lender-ready business plan in a weekend.

Mark Barclay
Guide curated and reviewed byMark Barclay

Before you start

  • A rough business idea
  • Realistic revenue and cost estimates

Tools you'll use

  • SynaBot
  • Google Sheets

Steps

  1. 1

    Write the idea in 3 sentences

    The problem, the customer, the offer. If you can't, you are not ready to write a plan yet.

  2. 2

    Ask for a plan outline

    Prompt: "Turn this idea into a business plan outline with sections for market, competition, offer, financials, go-to-market, milestones."

  3. 3

    Draft each section separately

    Feed the outline back. Ask for one section at a time — long sections written in one shot get generic.

  4. 4

    Run the financials by hand

    AI is not a spreadsheet. Build revenue, cost and cash-flow projections in Sheets or Excel yourself, then paste the assumptions back.

  5. 5

    Ask for the pushback

    Prompt: "You are a skeptical investor. List the 5 questions you would ask about this plan." Answer them in the plan.

What you'll have at the end

A structured, pressure-tested business plan you can share with lenders, investors or a co-founder.