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A useful business plan does two jobs: it helps you decide whether and how to build the company, and it gives another person enough evidence to evaluate that decision. Start by choosing the plan’s purpose, then document your customer, offer, market evidence, operating model, funding needs and financial assumptions. A polished document cannot make unsupported assumptions reliable, so label estimates, show how you derived them and revise them as facts change.

This guide is written for first-time founders in the United States. The U.S. Small Business Administration (SBA) says there is no single right format: a lean plan can support fast, iterative thinking, while a traditional plan provides fuller documentation for readers such as conventional lenders. Requirements for legal structures, permits and financing vary by jurisdiction and by funding provider.

Decide what the plan must accomplish

Before opening a template, write one sentence that names the plan’s job and its audience. For example: “This plan will test whether a mobile bicycle-repair service can reach break-even in its first year and explain the financing request to a local lender.” That sentence determines how much detail you need and which evidence matters.

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  • Internal decision tool: Emphasize assumptions, experiments, milestones, capacity and cash. A concise format that you revisit often may be enough.
  • Funding document: Include the information the actual lender, investor or grant program requests, including the amount sought, use of funds, repayment or ownership terms where relevant, and supporting documents. Ask the intended provider for its current requirements; there is no universal lender format established by the sources cited here.
  • Both: Keep one evidence-based operating plan, then adjust the presentation and level of detail for each reader instead of maintaining contradictory versions.

The SBA’s planning hub combines guidance on market research, startup costs, business plans and funding at SBA Plan your business.

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Choose a lean or traditional format

Format is a fit decision, not a test of seriousness. The SBA describes lean plans as streamlined and easy to revise, and traditional plans as more comprehensive. Its guidance says a lean plan may take as little as an hour to write and is typically one page; treat those as SBA descriptions, not promises about your own writing time or outcomes.

Decision axis Lean startup plan Traditional plan
Main use Quickly explain an idea, guide an early decision or support iterative refinement Comprehensive planning or a reader who expects detailed documentation
Detail Concise, often organized around the problem, solution, customer, channels, costs and revenue Multiple sections, supporting analysis and financial schedules
Likely audience Founder, team, early collaborators or an exploratory conversation Conventional lenders, investors or other readers requesting fuller detail
Revision Easy to revisit whenever an assumption changes Should still be updated, but contains more evidence and attachments
Rule The SBA says there is no right or wrong format; tailor the plan to the business and its purpose.

Start lean when you are still testing whether a real customer problem exists. Expand to a traditional plan when the decisions, financing request or audience requires documented detail. A lean plan is not a substitute for evidence, and a long plan is not evidence by itself.

Step 1: State the business, problem and customer precisely

Describe what the company will do in language a stranger can understand. The SBA’s 2021 guidance centers on four questions: what the business does, who the target customer is, whether there is desire for the offer and how the business will make money. See Four Questions Every Effective Business Plan Should Answer.

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Write a one- or two-sentence offer statement that includes:

  • The product or service and the job it performs.
  • The specific customer or buying organization.
  • The situation that creates the need.
  • The intended outcome for that customer.

“We sell software” is not a plan statement. “We provide appointment reminders and no-show follow-up for independent dental practices with two to ten providers” identifies a buyer, context and use case that you can investigate.

Separate facts from hypotheses. A fact might be a published price or a signed letter of intent. A hypothesis might be “practice owners will pay $200 per month.” Put the latter in an assumptions list with a method for testing it.

Step 2: Research demand and the market

Market research reduces risk while the idea is still being developed. The SBA recommends examining demand, the number and type of potential customers, relevant economic conditions, customer location and reach, market saturation and the prices customers encounter. Its official guidance is at SBA Plan your business.

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Define the market boundary

Write down the geography, customer definition and time period behind every market statement. A national statistic does not prove demand in one city or niche. If you quote a number, identify its source, publication date, unit and whether it counts people, households, businesses, transactions or revenue. The sources used for this guide do not provide a universal market-size figure for an unspecified business, so do not insert one without your own clearly documented source.

Use secondary and primary research

  • Existing information: public economic data, trade publications, local demographic information, regulatory material, competitor menus or catalogs and published price lists.
  • Direct research: interviews, observation, surveys, prototype reviews, preorders or a narrowly scoped pilot. Ask about the customer’s current workaround, purchase frequency, budget, decision maker and reasons for rejecting alternatives.

Record what was actually said or observed, not what you hoped to hear. Keep three columns in your notes: sourced fact, customer evidence and unresolved assumption. That separation prevents a broad trend from becoming a false forecast input.

Turn research into a decision

For each major assumption, define a threshold and a next action. For example, “Interview 20 local practices; continue if at least eight report a current no-show problem and five agree to test a priced prototype.” The threshold is your decision rule, not a general industry benchmark. If the result misses it, change the segment, offer, price or channel before expanding the plan.

Step 3: Analyze alternatives and competitors

Competitor analysis is more useful when it explains the customer’s choices than when it is a directory of company names. Include direct providers, substitute products, do-it-yourself methods and the cost of doing nothing.

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Build a comparison grid

Question Evidence to collect
What does the customer use now? Current provider, internal process, substitute or delay
What do alternatives do well? Capabilities, reliability, convenience, quality, location or service that customers mention
Where are customers underserved? Repeated complaints, unavailable features, long waits, poor coverage or mismatched pricing
What difference matters to the buyer? A criterion linked to a buying decision, not merely a feature you prefer
What does it cost? Published price, quoted price or a clearly labeled estimate with date and conditions

The SBA advises looking for competitor strengths, trends and themes. Do not claim that your offer is “better” until you identify the comparison and evidence supporting it. Competitor information changes, so date your observations and revisit them before a funding conversation.

Step 4: Explain how the business will reach customers and earn revenue

Map the customer journey

Describe how a prospective customer learns about the offer, evaluates it, buys it and receives support. Name the channel (for example, direct sales, a physical location, a marketplace, partnerships or a website), who owns each step and what it costs. A channel is not a strategy until you explain why the target customer uses it and how you will measure results.

Make the revenue mechanism explicit

State what the customer pays, when payment occurs and what event creates revenue. Possible mechanisms include a one-time sale, subscription, usage charge, commission, contract or a mix. If your forecast uses a simple framework such as customers multiplied by purchase frequency multiplied by price, show each input and its evidence. The multiplication is a planning calculation, not a sourced industry benchmark.

Explain discounts, refunds, payment delays, taxes and recurring versus one-time revenue where they affect cash. Connect pricing to customer research and competitor alternatives rather than choosing a price solely because it produces an attractive spreadsheet.

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Step 5: Design the operating model and responsibilities

Readers need to know how the promise will be delivered. Describe the work from order to fulfillment, including suppliers, equipment, software, inventory, quality checks, customer support and delivery or service capacity.

Cover ownership and people

  • State the proposed legal structure if known, and mark the choice as pending if you still need professional or jurisdiction-specific advice.
  • Name the founder’s responsibilities and the capabilities that are missing.
  • Identify employees, contractors, advisers or partners needed for launch, along with the trigger for adding each role.
  • Explain who can approve spending, sign contracts and handle compliance.

Make constraints visible

List location, hours, capacity, lead times, minimum orders, data or safety requirements and critical dependencies. If you have not selected a supplier or site, say so and show the decision criteria. Treating an unknown as settled makes the plan look cleaner but makes the risk harder to manage.

Step 6: Calculate startup costs and funding needs

Separate costs required to open from the recurring costs required to operate. Typical categories include formation and professional fees, permits, deposits, equipment, initial inventory, website or software setup, insurance, launch marketing, labor, rent, utilities, payment processing and working capital.

Build a cash-timing schedule

For each cost, record amount, timing, whether it is one-time or recurring, payment terms and the evidence behind it. Cash timing matters: a profitable sale can still create a shortfall if you pay suppliers before customers pay you. Add a contingency only when you explain its basis; do not hide uncertainty in an unexplained percentage.

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Describe the funding request

If you are seeking money, state the amount, preferred form (debt, equity or another instrument where applicable), timing and exact use. Tie every requested dollar to a launch activity, capacity decision or working-capital need. Explain what happens if you receive less or later than requested. A plan can support a funding discussion, but it cannot guarantee approval; the provider’s own underwriting and document requirements control.

Step 7: Build projections a reader can audit

A pre-revenue founder has no historical income statement to copy. You can still present a reasoned forecast if every material figure is labeled as an estimate and the reader can follow its derivation. Use customer conversations, observed prices, expected capacity, launch timing, supplier quotes and known expenses where available.

Include the core schedules

Schedule What it answers
Sales forecast How many units, customers or contracts you expect, at what price and when
Cost of sales Variable cost incurred to deliver each sale
Operating expenses Payroll, rent, software, marketing, insurance and other ongoing costs
Cash-flow forecast When cash enters and leaves, including financing and debt payments
Startup-cost schedule One-time costs and the cash required before normal operations
Funding-use schedule How requested money maps to specific expenditures and timing

The SBA’s traditional-plan guidance describes a prospective outlook of up to five years and asks for first-year projections at quarterly or monthly resolution. That is SBA guidance, not a universal rule for every business or funder. Use the actual horizon and format requested by your intended reader; provide more detail in year one when decisions and cash risk are highest.

Stress-test the assumptions

Prepare at least a base case and a downside case that change identifiable inputs such as customer conversion, sales cycle, price, capacity, supplier cost or launch delay. Do not present the downside as a probability unless you have evidence for that probability. State the trigger that would cause you to revise hiring, spending or financing.

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Traditional plan: a flexible nine-section outline

The SBA’s traditional outline is a useful checklist, not a mandatory universal form. Adapt the order and depth to your audience.

Executive summary

Give the company, offer, target customer, leadership, current stage, direction and funding need in a compact overview. Write it after the underlying choices and figures are understood. Do not use it to introduce claims that the detailed sections cannot support.

Company description

Explain the problem or need, what the business does, who it serves, its legal status if known and the strengths that are relevant to execution.

Market analysis

Present the defined market, customer evidence, industry conditions, alternatives, competitor themes, pricing context and remaining uncertainties. Attach geography, source and date to statistics.

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Organization and management

Show ownership, responsibilities, management experience relevant to the work and the capabilities you must add. An organizational chart is useful when several roles or entities are involved.

Product or service line

Describe what is sold, how it works for the customer, delivery or development status, intellectual property considerations and any dependencies that affect launch.

Marketing and sales

Explain positioning, channels, customer acquisition steps, sales cycle, pricing and retention or repeat-purchase logic. Connect the plan to observed customer behavior.

Funding request

Specify amount, timing, instrument or terms where applicable, and use of funds. Show how the request changes capacity or runway and what milestones the money is intended to reach.

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Financial projections

Include the forecast schedules, assumptions, cash needs and scenario logic. Reconcile the projections with the funding request and operating capacity.

Appendix

Place supporting material here when the reader needs it: resumes, research notes, contracts, leases, purchase orders, intellectual-property records, licenses, permits, product images and detailed calculations. Label each attachment and refer to it from the relevant section.

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Write the summary last and package the evidence

Once the decisions, research and numbers are coherent, write the executive summary for the specific reader. A lender may need repayment capacity and collateral information; an investor may focus on growth, risk and ownership; an internal team may need milestones and resource trade-offs. Keep the underlying assumptions consistent while changing emphasis.

Use a source-and-assumption register beside the document. For every important statement, record whether it is sourced, learned directly from prospective customers or still an assumption. Include the date and geography for volatile information. This makes review faster and shows a reader which claims deserve further testing.

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Review the plan as a living operating document

The SBA has described a business plan as a “living document” in its 2019 article, Writing a Business Plan: Your Roadmap to Small Business Success. Set a review cadence that matches your business stage: after each customer test during discovery, monthly during launch or at least quarterly once operations stabilize.

  • Replace estimates with actual sales, costs, conversion rates and delivery times as they become available.
  • Mark assumptions that failed instead of silently editing history.
  • Recalculate cash runway after material changes in price, volume, payroll or payment timing.
  • Record the decision made, evidence used and date of the next review.
  • Give the intended funding provider the version and attachments it currently requests.

Common first-time-founder mistakes

  • Choosing a template before choosing a purpose: decide the audience and decision first.
  • Confusing interest with demand: a positive conversation is not a purchase; test behavior, price and timing.
  • Using an unqualified market-size number: disclose definition, geography, source and date or omit it.
  • Listing competitors without alternatives: include do-it-yourself options and the cost of inaction.
  • Forecasting from a desired outcome: build sales from explicit, testable inputs and show downside conditions.
  • Ignoring cash timing: map deposits, payment delays, inventory purchases and debt service.
  • Hiding unknowns: identify pending legal, supplier, staffing and location decisions.
  • Assuming the plan secures financing: it supports evaluation; it does not replace the funder’s assessment.
  • Writing once and filing it away: update the plan when evidence or operating reality changes.

Free and optional planning support

SBA resources

The SBA planning hub links to market-research, startup-cost, business-plan and funding guidance: https://www.sba.gov/counseling/plan-your-business/. Its detailed format and section guidance is at Write your business plan.

SCORE worksheets and mentoring

SCORE’s Business Plan Template for a Startup Business says that completing its 11 worksheets creates a working plan that can be shown to a SCORE mentor. The template lists possible supporting material such as contracts, leases, purchase orders, intellectual property, key managers’ résumés and market-research data. Use the worksheets as prompts, not as proof that every business needs an identical document.

The SBA also names SCORE, Women’s Business Centers, Small Business Development Centers and Veteran Business Outreach Centers as sources of free feedback. Availability and eligibility can vary by location.

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Optional books

Kogan Page lists Colin Barrow’s The Business Plan Workbook, 11th edition, as a 312-page paperback published August 3, 2025, covering business modeling, market analysis and financial forecasting: publisher listing. It is an optional structured companion, not an SBA or lender requirement; confirm current availability before buying.

A practical completion checklist

  1. Write the plan’s purpose and intended reader in one sentence.
  2. Choose lean or traditional detail based on that purpose.
  3. Define the offer, problem, customer and buying situation.
  4. Collect market and customer evidence with dates and geography.
  5. Compare direct competitors, substitutes and doing nothing.
  6. Map channels, pricing, payment timing and revenue logic.
  7. Assign operating responsibilities and list unresolved dependencies.
  8. Itemize startup and recurring costs, then map cash timing.
  9. Build an assumption-based forecast with detailed first-year periods when useful or requested.
  10. State any funding request and its use of proceeds.
  11. Attach evidence, write the executive summary last and ask an informed reviewer to challenge the assumptions.
  12. Set a review date and update the document when reality changes.

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