A commonly cited research finding is that entrepreneurs who write formal business plans are about 16% more likely to achieve startup viability than otherwise similar founders who do not plan. Another analysis often summarized in startup media and advisory sites states that writing a business plan can roughly double the likelihood of new venture success, though this “2x” figure is more of a rule‑of‑thumb aggregation than a single precise statistic.

What “more likely to launch” means

When people ask “how much more likely is a business to launch if the founder creates a business plan,” they usually mean one of two things:

  • Probability the startup actually gets off the ground (moves from idea to operating business).
  • Probability the startup reaches viability (for example, generating revenue or surviving beyond the very early stages).

In the Harvard Business Review–reported study, founders who wrote formal plans were 16% more likely to achieve viability than similar founders who did not, after controlling for factors like idea quality and background.

Where the “doubles your chances” idea comes from

Some entrepreneurship and small‑business sources generalize the planning advantage into a simpler message: a business plan can “double your chances of success.” This is based on:

  • Research showing positive performance and survival effects from planning across multiple samples and contexts.
  • Observational data that ventures with plans tend to survive and grow at higher rates than those without, especially over several years.

These summaries are helpful for motivation, but they simplify a body of research that includes different methods, definitions of “success,” and types of ventures.

Why a business plan helps launch

Studies and practitioner reports point to several mechanisms by which planning increases the likelihood of launch and early success:

  • Clear roadmap: Defining target customers, revenue model, and milestones reduces confusion and helps the founder actually execute instead of staying stuck at the idea stage.
  • Better resource access: Written plans make it easier to convince banks, investors, or partners to come on board, which often determines whether a venture can launch at all.
  • Risk checks: Planning forces market research and financial projections that can reveal flaws early, allowing pivots before time and money are sunk.

Important caveats

Researchers emphasize that:

  • The benefit is not uniform; it depends on context (industry, founder experience, funding needs, and timing of the plan).
  • Overly rigid or unrealistic plans can hurt if they keep founders from adapting as they learn.
  • Short, focused, and living documents often work better than long, static plans.

So, a practical takeaway: a thoughtful, adaptable business plan tends to make a business meaningfully more likely to launch and reach viability—on the order of at least 10–20% more likely in rigorous studies, and potentially closer to 2x in some aggregated or practitioner interpretations, depending on how “success” and “launch” are defined.

Information gathered from public forums or data available on the internet and portrayed here.