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How to write a business plan (2026 step-by-step guide)

The nine sections lenders, investors and visa officers expect, what each one must contain, and how to build a plan that actually gets funded.

The short answer: a fundable business plan follows a standard nine-section structure, an executive summary, company description, market analysis, organization, products or services, marketing and sales, operations, and a five-year financial model with a funding request. Lenders look for a DSCR of at least 1.25; investors look for a defensible market and a credible team. Get the structure right and the rest is evidence.

What is a business plan?

A business plan is the document that turns an idea into something a lender, investor or immigration officer can evaluate. It proves three things: that there is a real market, that you can operate the business, and that the numbers work. A plan written to a recognised structure is far easier to fund than a long, unstructured pitch, because the reader can find what they need where they expect it.

The nine sections of a fundable business plan

How long should it take?

A focused first draft takes most founders one to three weeks once the research and numbers are in hand. The financial model is usually the bottleneck, not the writing. Build the model first, let it tell you whether the business works, then write the narrative around it.

The mistakes that get plans rejected

The common ones are predictable: a market section with no real sources, projections with no stated assumptions, a funding request that does not match the use of funds, ignoring the licences and permits the business actually needs, and an executive summary that buries the ask. Each of these is an easy decline for an underwriter, and each is avoidable.

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FAQ

Questions founders ask.

How long should a business plan be?

Most lender- and investor-ready plans run 15 to 30 pages plus a financial appendix. Length matters less than clarity: every section should earn its place. SBA and visa plans tend to run longer because they must address specific criteria.

Do I need a business plan for an SBA loan?

Yes. SBA 7(a) and 504 lenders require a written plan with five-year projections that demonstrate a debt-service-coverage ratio of at least 1.25. The plan and model are what the underwriter actually reviews.

Can I write the business plan myself?

You can, and this guide gives you the structure. The two areas founders most often get marked down on are a defensible market analysis and a financial model that holds up to questioning, which is where most people choose to bring in help.

How much does a professional business plan cost?

Professionally written plans typically range from about $1,000 to $2,500 depending on complexity and whether a full financial model and pitch deck are included. See our business plan services for fixed-price packages.

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