A one-page business plan and next steps

You now have the main building blocks: a customer, a problem, a value proposition, your costs, contribution margin, break-even point and price. A one-page plan puts them together so you can see whether the idea makes sense and what to test next.

What you will learn

• What a one-page business plan and a lean canvas are
• Which sections to include and which numbers to use
• How to calculate a simple margin of safety
• How to turn open questions into concrete next steps

Explanation

A one-page business plan is a short summary of your idea on a single page. It is not a document for a bank; it is a thinking tool you update as you learn.

A lean canvas is a popular one-page layout with boxes for problem, customer segments, value proposition, solution, channels, revenue, costs, key metrics and your advantage. You can use it or the simpler version below.

A channel is the way you reach customers, for example a market stall, a website or a local shop.

A key metric is one number you track regularly to see if things are working, for example candles sold per week.

The margin of safety shows how far your planned sales are above break-even:

Margin of safety = (Planned units − Break-even units) ÷ Planned units

For anything involving registration, VAT (Umsatzsteuer), the Kleinunternehmer rules or permits, note it as an open question and check with a Steuerberater or the relevant local office.

Worked example

Nordlicht Candles (fictional) – one-page plan.

Assumptions: numbers from earlier lessons; all amounts per month and excluding VAT; profit is before income tax and before the owner's pay.

Calculations:

• Planned profit: 150 × €10.30 − €546 = €1,545 − €546 = €999
• Margin of safety: (150 − 54) ÷ 150 = 96 ÷ 150 = 0.64 → 64%

Sales could fall by up to 64% below plan before the business makes a loss, if all other assumptions hold.

Next steps (each one testable):

1. Run 5 more customer interviews with gift buyers.
2. Sell a first batch of 30 candles and track the key metric weekly.
3. Book an appointment with a Steuerberater about VAT and registration.

Limitations: the plan uses a single product, average costs and an untested sales figure. Update it once you have real sales data.

Common mistake

Practice activity

Draw a table with the sections from the worked example and fill it in for your own idea. If you do not have one yet, use Rheinblick Coffee Cart (fictional) with these figures:

• Price €3.50; variable cost €0.85; fixed costs €850 per month; break-even 321 cups per month
• Planned sales: 1,500 cups per month
• All amounts exclude VAT; ignore taxes and fees.

Calculate the planned profit and the margin of safety, and write three testable next steps.

Key takeaways

• A one-page plan combines customer, problem, offer, channels and key numbers.
• Use the numbers from your cost, contribution margin and break-even calculations.
• Margin of safety = (planned units − break-even units) ÷ planned units.
• Turn every open question into a small, testable next step, and update the plan regularly.

Next step

Write your own one-page plan this week; if you also want to understand financial markets and managing risk with money, continue with the Trading course.