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Planning guide

How to write a business plan

A business plan explains what your business does, who it serves, how it will make money and what it needs to get there. The SBA describes two common formats: a detailed traditional plan and a shorter lean plan. Lenders and investors often ask for a plan, and writing one is also a way to test your own assumptions.

Published · Last reviewed · By the BizKindly editorial team · Editorial policy

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In short

  • The SBA describes two common formats: a traditional plan with detailed sections, and a lean startup plan that summarizes key points.
  • Traditional plans are often expected by lenders and investors who want detail.
  • Financial projections are only as convincing as the assumptions behind them.
  • SCORE mentors, Small Business Development Centers, Women’s Business Centers and Veterans Business Outreach Centers offer free or low-cost help with plans.

Traditional or lean?

The SBA’s write your business plan (opens in a new tab) page describes two styles. A traditional plan is longer and detailed, and is what many lenders and investors expect. A lean startup plan is short and high-level, focused on the key elements, and can be quicker to write and revise.

The two common business plan formats
MeasureTraditional planLean plan
LengthLonger, with full sectionsShort, often a page or a chart
DetailDetailed market, operations and financial sectionsKey points only
Often used forLoan applications and investor requestsTesting an idea and planning internally
UpdatingRevised periodicallyEasy to revise often

Many owners start lean, then expand to a traditional plan when they approach a lender.

What goes in a traditional plan

  • Executive summary. What the business is and why it will succeed, in brief. Many people write it last.
  • Company description. The problem you solve, who you serve and what sets you apart.
  • Market analysis. Your industry, target customers and competitors, based on research you can point to.
  • Organization and management. The legal structure and who runs what. The business formation guide covers structure.
  • Products or services. What you sell and how it is made or delivered.
  • Marketing and sales. How you will reach customers and turn them into sales.
  • Funding request. How much you need, what for, and over what period, if you are seeking financing.
  • Financial projections. Expected revenue, expenses and cash flow, with the assumptions behind them.
  • Appendix. Supporting documents such as licenses, resumes or letters of reference.

Making projections believable

Projections are where many plans lose a reader. A lender is less interested in an optimistic number than in why you expect it. It can help to state each assumption plainly: how many customers, at what price, with what costs, and based on what evidence.

  • Tie revenue to specific drivers, such as customers, orders or contracts.
  • Include every regular cost, including taxes, insurance and loan payments.
  • Show a cash flow projection, not just profit, since timing matters. See the cash flow guide.
  • Build a cautious version alongside the expected one.

How lenders read a plan

A lender reading a plan is looking for a clear use of funds, a believable path to repayment, and an owner who understands the business and its risks. The SBA’s fund your business (opens in a new tab) page explains how a plan fits into the funding process, and our loan-readiness guide lists the other documents lenders commonly request. If an SBA-backed loan is on your list, a traditional plan is often part of the package.

Free help writing a plan

You do not have to write a plan alone. SBA resource partners, including SCORE mentors, Small Business Development Centers, Women’s Business Centers and Veterans Business Outreach Centers, offer free or low-cost counseling and plan reviews. Find them on the SBA’s resource partners (opens in a new tab) page.

Red flags

Be wary of paying high fees for template plans or plans sold with a promise that they will win funding. A plan built on numbers you cannot explain can hurt more than help. Many free templates and free reviews are available through SBA resource partners.

Frequently asked questions

Do I need a business plan for a loan?

Many lenders ask for one, especially banks and SBA lenders, and most want at least a clear explanation of how the money will be used and repaid.

What is a lean business plan?

A short, high-level plan that covers only the key elements of the business, such as the value offered, customers, activities and finances. It is quicker to write and revise than a traditional plan.

Where can I get free help with a business plan?

SCORE mentors, Small Business Development Centers, Women’s Business Centers and Veterans Business Outreach Centers offer free or low-cost help through the SBA’s resource partner network.

How long should a business plan be?

It depends on the format and audience. A lean plan can fit on a page, while a traditional plan for a lender is longer and more detailed.

Sources

  1. SBA: Write your business plan (opens in a new tab)
  2. SBA: Resource partners (opens in a new tab)
  3. SBA: Fund your business (opens in a new tab)

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