How to Write a Business Plan with AI in Nigeria: Free Beginner Guide (No Consultant, No Blank Page)

A blank page is why your business plan is still not written.

You need a plan for a loan, for BOI, for AGSMEIS, for LSETF, or for an investor who asked for one, and every template you opened gave you headings with no help on what to actually write. And the quotes you got from consultants start at ₦50,000 and climb to ₦500,000, so you keep saving free PDFs you never finish.

If that is where you are, this guide is for you. You have not written a full plan before. You have not typed a business plan prompt into ChatGPT. You do not know what executive summary, market analysis, or financial projection means in practice yet. You want plain steps on your phone that end with a draft you can edit with your own numbers today.

By the end, you will know exactly how to turn one sentence about your business into section drafts, fix the parts where AI invents numbers, and export a clean plan a lender can read without paying first.

What a business plan actually is

CORE IDEA: A plan is proof you can explain the business in numbers a lender trusts.

It answers five questions in order: what you sell, who buys it, how you reach them, what it costs to run, and how the money comes back. You give ChatGPT your real details, it gives you a draft for each section, you replace its guesses with your prices, supplier quotes, and CAC. That edit is what makes it bankable.

You are not asking AI to invent your business. You are asking it to turn your notes into clear pages, then you make those pages true.

Words you will see in this guide

Know these once, the prompts read clean.

• Executive summary is the one page at the front that summarises the whole plan. A lender reads this first.
• Market analysis is who your customer is, how many of them you can reach in your location, and who already serves them.
• Financial projection is your estimate of sales, costs, and cash over 12 months. It is a guess you must base on real numbers.
• CAC (cost to acquire a customer) is how much you spend to get one paying customer.
• CAC, BOI, AGSMEIS, LSETF are funding sources in Nigeria that often ask for CAC registration, TIN, and bank statements with the plan.

What you need before you start

You already have most of it.

• A phone with internet and a free ChatGPT account (chat.openai.com or the ChatGPT app). No card needed.
• One sentence about your business: what you sell, who buys, where you sell it. Example: thrift gowns in Benin for students and young workers, sold on WhatsApp and Jiji.
• Rough real numbers: your price, your cost per unit, monthly rent or data costs, transport, and how you find customers today. If you do not know CAC, write how you find one customer now.
• Your CAC documents ready to attach later if you will apply to a bank: CAC certificate, TIN, and recent bank statements. You do not need them to draft, you need them to apply.

Remember THE ONE-PAGE RULE: you never write the whole plan in one prompt. You write ONE section at a time, fix it, then move to the next. That is how you stop AI from spreading one bad guess through every page.

Step-by-step: Write your plan on your phone in one sitting

This is the phone-first workflow. Work section by section. Copy each prompt, change only the bracketed parts, paste into ChatGPT, and edit the result before the next step.

Step 1 - Set the context once

Open a new chat in ChatGPT. Paste this to give it memory for the whole session:

I am writing a business plan for [food delivery in Kubwa Abuja, home cooked lunch for office workers, WhatsApp orders, 1 rider]. My customer is [office workers 25 to 40 in Kubwa, buy lunch 3 times per week, pay 2,500 Naira per plate]. My price is [2,500 per plate], cost per plate is [1,400], monthly fixed costs are [rent 20k, gas 15k, data 5k]. Competitors are [mama put stalls, Chicken Republic, Jumia Food]. Keep context for the next prompts and ask before you invent any number.

This one message prevents generic answers later. ChatGPT will now remember your price, cost, and location for each section.

Step 2 - Draft the company and product section

Paste this:

Write the Company and Product section for my plan. Use only details I gave. Cover what we sell, the problem we solve for the customer, and how we deliver (WhatsApp order, delivery time, area). Keep it under 250 words, plain English, no hype. If you need a fact I did not give, write [NEEDS INPUT] instead of guessing.

Read the draft. Fix product names, delivery time, and area. If it added a feature you do not offer, delete it. This edit is the work.

Step 3 - Draft market analysis without letting AI invent

Paste this:

Draft Market Analysis for [food delivery in Kubwa]. Include target customer profile, 3 direct competitors in Abuja with how they price and deliver, and 3 market trends that affect food delivery in Nigeria in 2025-2026. For market size, do not invent numbers. Write "Add your estimate here based on your street count" and give me 2 sources I can check for real numbers (like NBS, CAC area data, or local trade association). Flag any claim you are not sure about with [VERIFY].

Replace [VERIFY] lines with what you actually see: count stalls on your street, check Jumia Food listings for Kubwa, ask three customers why they buy from you vs mama put. A small real number beats a big invented one. A lender spots invented size in one question.

Step 4 - Draft marketing and sales (how you get customers)

Paste this:

Write Marketing and Sales for the same business. My budget is [5,000 Naira per week on WhatsApp Status and flyers]. List my top 3 channels to reach office workers in Kubwa, my sales process from first message to payment, and how I will keep customers (repeat orders). Give a 90 day plan with one weekly action. Be specific to Kubwa and WhatsApp, not generic online marketing.

Fix channels to what you actually use. If you do not run ads, do not keep ads in the plan. Write the CAC you actually pay: if 5k brings 10 orders, CAC is 500 Naira.

Step 5 - Build financials honestly (the part most plans fail)

Do not let AI write numbers you will share with a bank. Use it for structure, then fill your numbers in a sheet.

Paste this:

Build a 12 month financial structure, not numbers. For my food delivery, list the line items I must fill: sales units per month, price, cost per plate, gross profit, fixed costs (rent, gas, data, rider), cash flow timing (pay supplier before customer pays), break even units per month. Show the formula for each line so I can check math. Do not invent sales. Ask for any number I did not give.

Then copy the structure into Google Sheets or Excel on your phone. Fill months with your honest estimate, not a smooth growth line. Show slow January and February if that is real. Write the use of funds exactly: how much for gas, how much for extra cooler, how much for working capital. Vague lines like "funds for expansion" get flagged. A funder asks "where exactly will this money go" on page two.

Step 6 - Draft risks and milestones

Paste this:

Write Risks and Milestones. List 5 real risks for this business in Abuja (demand, price increase, rider failure, power, delayed payment) and one practical response for each. Then give 6 milestones for the next 6 months with owner and date, like CAC registration, rider agreement, test 50 orders, break even.

Edit until each risk has a response you can actually do, not "we will mitigate risk."

Step 7 - Write the executive summary last and export

Only now paste this:

Now write a one page Executive Summary using only what we already drafted. Cover what we do, who buys, market, advantage, team, and funding ask with use of funds and repayment source. Under 350 words, plain English, no new claims. End with what the reader learns on page one about how we repay.

Copy the whole plan into Google Docs or Word on your phone. Use clear headings, short paragraphs, and a one page table for loan amount, use of funds, and repayment. Export as PDF. That PDF is what you send to BOI, LSETF, AGSMEIS, or a bank contact. Keep the sheet with formulas as backup. If a lender asks, you show the math behind the PDF.

Why most plans get rejected (and how yours will not)

• Invented market size with no source. Fix by naming two sources you checked and writing "estimate based on count" where you have no report.
• Smooth sales line that ignores season. Fix by showing one slow month and explaining why.
• Vague use of funds. Fix by breaking the loan into inventory, equipment, and working capital with amounts and dates.
• No repayment source. Fix by stating "repay from monthly sales of X units at Y margin" and showing what happens if sales drop 20 percent.
• Copied generic competitors. Fix by naming three real sellers in your area and their actual prices.
• Long padded pages with no table. Fix by keeping the plan to 10 to 15 pages and putting the loan, use, and repayment on one table a reader can check in 30 seconds.

Free versus paid: what you actually get in Nigeria

Free is where you START. ChatGPT free and Claude free both write every section above without payment. Free is enough for the first draft you will edit.

Paid helps only after free is tight. ChatGPT Plus at $20 per month as of September 2026 (about ₦30,000 to ₦34,000 depending on the exchange rate as of September 2026) gives faster replies and longer chats. Some Nigerian cards need a dollar or virtual card to pay. You do not need Plus to finish the steps in this guide. Swiftplan, LivePlan, and Upmetrics offer business plan specific AI with financial automation, but they charge and still need your real numbers to be useful.

Do not pay until free has become too limited for you. Your first bankable draft does not need payment. It needs one clear context prompt and honest numbers you paste today.

You now know how to draft a bankable plan without a blank page

You now know how to turn a rough business idea into section drafts, check each number against real sources, and export a plan a lender can read. Your next move is to apply this sequence to your own idea before you save another template.

Stop saving business plan templates you never open. Paste one prompt and edit the draft with your real prices and costs.

Yege holds the free guides you just walked through. Build Lab is the WhatsApp community where you build alongside others and get steady answers while you ship.

If you want those guides plus quick help as you draft your next section, I invite you to join the group.

Join the Build Lab WhatsApp group

FAQ