Do those summaries, sure. Use those frameworks. But don’t think they replace business planning.

There is some bad advice floating around in the startup world. Useful as the Lean Canvas is, and despite some well-intentioned suggestions of summaries, those are not business plans. They don’t deal with the drivers and components of cash flow. They don’t set milestones, metrics, and tracking. You can’t run a business with them. And you won’t get through investors’ due diligence with them.

Beware of the straw-man logic that first defines a business plan as a huge ponderous document that takes months to prepare, and then advises against it. That’s very much like defining exercising as running 50 miles in a single day, then advising against it.

Real business plans are not long, not traditional, and definitely not a waste of time. Business owners need them. Startups need them. Angel investors want to see them during due diligence.

They set strategy and tactics concisely, they set milestones and performance metrics for tracking, they set priorities, and lay out the relationships between sales, costs, expenses, balance sheet and cash flow as essential projections. And they stay lean and they get reviewed and revised often, at least once a month.

The worst thing about supposed experts advising against business planning is that it does such a disservice to real people trying to figure out how to run their business better. The components of cash flow (sales, costs, expenses, assets, liabilities, capital, profits) are way easier to understand and manage when laid out in an organized way than when just kept in somebody’s head. And milestones, tracking, and metrics, the components of accountability, take writing down, reviewing and revising as necessary. That’s all called management.

The myth about people – investors especially – not reading business plans is just a myth. It’s a word game. Some investors and a lot of supposed experts feel cool saying they don’t read business plans, but ask them whether there should be well-defined strategy, tactics, milestones, metrics, and projected numbers. Ask them whether they want milestones met and priorities established. They’ll all say yes. But the myth makers have first misdefined business plans as long, traditional, and so forth.

I’m was in an angel investment group for several years. We wanted summaries first, then pitches. We didn’t read business plans until after we were really interested, and even then, we didn’t want those long traditional business plans. But we do want to see that core information, including financials, as part of due diligence. We’ve never read a business plan until after liking the summary and the pitch and meeting the founders; but we’ve never invested in a startup that didn’t have a business plan.

So how can you do a good business plan in a week? Do a lean plan.

Set your strategy as a focus on how you’re different, what you’re offering, and who’s your market. Use bullet points. Use the lean canvas if you like, as Luca suggests, or those other summaries. Just write it down.
Set tactics to execute strategy. Think of them as the key decisions that make up a marketing plan, product plan, and financial plan, but linked to your strategy, to make your strategy happen. Keep it to bullet points, as lean as possible.
Set monthly review schedule, milestones, performance metrics, and other concrete specifics to track. List assumptions. Make sure task assignments are clear.
Develop projected sales and direct costs monthly for 12 months, and annually for the following two years. Then do the same for spending and cash flow.