The Most 16 Common Business Plan Mistakes

Writing a business plan is one of the most critical parts of starting a new business. This is especially true if you are hoping to secure funding from an outside source, such as an investor or bank. 

However, while writing your plan may be essential, there are many business owners who make mistakes when writing their plan that can hurt their chances of success. If you want to avoid some common mistakes when writing this important document, read on!

10 Mistakes You Can Make When Starting a Business
1. Avoid inadequate market research
2. Set realistic financial projections
3. Clearly define your unique value proposition
4. Thoroughly analyze your competition
5. Include a detailed marketing strategy
6. Address potential risks and challenges
7. Create a comprehensive executive summary
8. Ensure a well-structured and organized plan
9. Seek feedback and input from advisors
10. Stay adaptable and open to revisions
11. Validate assumptions and data used in the plan
12. Show a clear path to profitability
13. Avoid overestimating market demand
14. Be realistic about timeframes for growth and success
15. Highlight the qualifications and experience of your team
16. Double-check for grammar, spelling, and formatting errors

Mistake 1: Not Knowing Your Audience

If you don’t know your audience, why are you writing a business plan? If you don’t understand who you are writing for, there is no way that the content of your business plan will be relevant to them. Before starting on any writing project, it is important to have a clear picture in mind of who your target reader or audience is.

You need to understand their needs and wants so that when you begin creating content for them it will resonate with them on an emotional level. This ensures that they will engage with what you have written and make an effort to read through all of it instead of simply skimming over it or skipping large chunks altogether.

Writing a business plan is the first step towards transforming your brilliant idea into a successful reality. Our comprehensive guide on how writing a business plan can turn your idea into reality provides valuable insights to set you on the path to success.

Mistake 2: Writing A Generic Business Plan

A generic business plan does not focus on your business. It doesn’t have any personal touches, nor does it discuss how you will grow or make money from your business. Instead, a generic business plan is written in such a way that it could be used by anyone.

This is a common mistake for people who are just starting with their first ever piece of formal writing, or for those who aren’t yet sure what they want to write about when it comes to their own company and its goals for the future.

Generic plans lack specific details about the industry, competitors, and customers – all of which play an important role in determining whether or not you have what it takes to make your mark on the marketplace!

Mistake 3: Writing A Novel For A Business Plan

When putting together your business plan, you’ll want to keep it simple and avoid writing a novel. You can use bullet points and paragraphs that are no more than two or three sentences long. 

Also, when you’re done with your first draft, go back through and look for places where you can cut down on the number of words. Don’t forget that everyone has different reading levels and some people may have trouble understanding what you’ve written if it’s too complicated or wordy.

Another way to keep things short is by using templates; there are many free templates out there on the internet (just Google “free business plan templates”) or even just buy one from Amazon or at Staples/Office Depot/etc. 

You should also check out online tools like GatherUp’s template generator which allows users to create their customized version based on their specific industry needs as well as their individual goals within those parameters for them not only to provide financial projections but also to highlight key aspects such as competitor analysis, SWOT analysis, etc.

Crafting a well-structured business plan is crucial for any entrepreneur. Follow our practical advice on how to write a business plan in 9 simple steps to ensure you cover all the essential elements needed to impress potential investors and stakeholders.

Mistake 4: Not Being Guided By An Outline When Writing A Plan

A good outline is the foundation of your plan. It’s what holds all the information together, and it helps you stay focused on what you need to say. An outline will also help you stay organized so that the important points are noted and remembered by those who read your business plan.

Using an outline when writing a business plan ensures that everything is in its right place so that readers won’t have any trouble following along or finding what they’re looking for. 

If an outline isn’t used when writing a business plan, it can be very difficult for people to understand what’s being said and how everything fits together logically and this can make them lose interest before getting through all of the document!

Mistake 5: Not Doing Your Research

This might seem like a no-brainer, but it’s a common mistake that could cost you time and money in the long run. When you’re planning your business, take the time to do thorough research on what similar businesses have done in the past. This will help you make educated decisions about your own company.

It’s also important to note that there are different types of research methods, so make sure you’re using the right ones for your business plan! 

For example, if you’re trying to decide between two products or services for your new business (and one of them already exists), look into customer reviews and see how people feel about their experiences with those products or services before deciding which one works best for you!

Mistake 6: Not Getting To The Point Straightaway

The most important part of the business plan is your executive summary. It’s what you’ll use to sell your idea to investors and convince them that it’s worth their time.

It should be short no more than two or three pages at most and it should also be clear, concise, and compelling. So how do you make sure you get everything right?

When seeking funding for your business, a solid business plan can make all the difference. Learn how a well-prepared plan influences investors by checking out our article on how a business plan helps you get funding.

Mistake 7: Using Outdated Information

Use the latest industry data. Try to stay on top of industry trends and other important developments by reading at least one or two business publications each week.

Use the latest industry statistics. If you’re writing a plan for an established company, then use data that reflects current market conditions, not historical figures from a few years ago.

Use the latest research. Read as much industry-related research as possible especially if you’re tracking down information related to competitors or similar companies in your space to ensure that your figures are accurate and up-to-date when it comes time to present them in your plan!

Mistake 8: Being Unrealistic Or Drafting An Idealistic Plan

You may be thinking that your business plan should be the most optimistic thing in this world, but you could make a mistake if you are too optimistic. It is good to have high goals, but they should be realistic and attainable. 

If you are too ambitious with your plans and goals, it can lead to frustration as well as poor performance and low productivity. You do not want to waste time on things that will not work out well for your business so that you can achieve what is expected of it by being realistic in creating your business plan.

Mistake 9: Including Irrelevant Information And Leaving Out Important Information

A business plan is a tool for guiding your company to success, so you need to make sure that it’s as useful and relevant as possible. This means including only the information that’s important for your readers and not including anything that doesn’t help them understand your business and its goals.

Relevance is important because it helps potential investors gain an understanding of what makes your business unique, which in turn makes them more inclined to invest in it. 

The same goes for employees or vendors who will be working with you on this project: they’ll want details about how their work fits into your company’s overall goals, so having an outdated or irrelevant plan may deter them from getting involved at all.

The best way to ensure relevance is by writing a plan that’s focused on certain topics and not everything else under the sun​ but still keeping those topics broad enough so they don’t get too specific or confusing! Don’t forget about relevance when reviewing any of these components either:

Setup/Introduction – How does this section connect back to my overarching goals? Am I saying something here? Why should anyone care?

Business description – What do people need to know about me/my company/our product? How does this relate down through each level (Company Overview -> Products & Services -> Financials)? When finished thinking through these questions again write down some bullet points outlining what needs fixing up next time around!

Investors pay close attention to business plans that capture their interest from the start. Discover the secrets of creating a compelling business plan that investors will actually read with our guide on how to write a business plan that investors actually read.

Mistake 10. Including Spelling Errors And Grammatical Errors In The Business Plan

Don’t make spelling and grammatical errors. A business plan is your best chance to impress investors with your professionalism, so it’s important to be at least as professional as the people you’re trying to court. If there are spelling errors in the plan, it can look unprofessional and give readers a bad impression of you or your company.

Know how to use apostrophes properly. Apostrophes should never be used when pluralizing words (like “employees” or “managers”). You shouldn’t need an apostrophe if you’re explaining what happened in the past tense (“I went for a walk”), so don’t add them indiscriminately just because they sound better than their basic form (“I went out yesterday”).

Remember that e-mail is informal communication; don’t use it in business documents unless necessary!

Mistake 11. Including Too Much Technical Jargon And Acronyms In The Introduction

Technical jargon and acronyms can be difficult to understand, especially for those not working in your industry. This can make it harder for people to understand what you’re saying and may give your business plan a stilted feel.

Using technical jargon or acronyms is also a sign of laziness on the part of the writer. Instead of taking the time to explain something that might be unfamiliar, they prefer just throwing it out there without explanation so that readers have no choice but to figure it out themselves.

To avoid using these terms, try using plain language when possible: “Instead of saying ‘best practices (which is vague), say ‘X will improve Y by Z percent” or “instead of saying ‘we need X amount, 

Mistake 12. Failing To Clarify Concepts In The Business Plan

To make sure that your business plan is clear and concise, you should use simple language. For example, instead of saying “The company plans to open a new store in Chicago”, you could say “XYZ Company plans to open a new store in Chicago by the end of 2019.”

You should also use examples to help explain concepts that might be confusing. For example, if your plan says: 

Our goal is to improve customer service by streamlining internal processes through e-commerce and mobile apps”, it would be helpful for investors if you explained how this would improve customer service by breaking down each step of the process into smaller steps (e.g., “reduce wait time”).

Mistake 13. Failing To Use Simple Language In The Business Plan

It’s important to write in a way that is accessible and easy to understand. Use short sentences, simple language, active voice, and simple words. Use short paragraphs and sections. 

A typical business plan is at least 20 pages long if you’re using too many big words or complicated sentences within this document it will be more difficult for your reader to absorb the information you’re trying to share with them.

Mistake 14. Forcing Readers To Read Through Long Sentences

Long sentences are a common business plan mistake. Long sentences make it hard for readers to understand what you’re trying to say because they have a hard time keeping their place in the sentence and figuring out where you’re headed. 

In addition, long sentences don’t grab the reader’s attention as well as shorter ones do which means they’re more likely to get left behind or skimmed over entirely by busy readers who are looking for ways to quickly get through your plan without missing anything important.

Here are some tips for avoiding long sentences:

Break longer thoughts into smaller ones by using punctuation like commas or semicolons (or both) instead of periods after each idea; also consider adding numbers at the beginning of each new thought if there are multiple steps involved in what you’re trying to say (For example The first step is… The second step is… The third step is…)

Use short paragraphs of two or three sentences maximum and make sure that each paragraph has a clear topic sentence or purpose statement at its beginning so it’s easier for readers who may be skimming through quickly

A successful business plan should answer critical questions and address potential challenges. Explore the key queries your business plan should tackle by reading our article on 12 questions every business plan answers. It’s an essential resource to ensure your plan is comprehensive and well-prepared.

Mistake 15. Having A Poorly Designed Format For The Business Plan

The business plan should be easy to read. It should also be easy to understand and use. Here’s why:

If you want people to read your plan, you need to make it easy for them. That means avoiding complicated language and jargon in favor of a simple, straightforward style that will get the message across fast and keep them interested long enough for them to finish reading it!

To make sure that your audience can understand what you’re saying in your business plan, remember these tips:

Use clear language with proper grammar and punctuation at all times so readers won’t have any trouble understanding what they’re reading. If they do have trouble understanding part of what’s written, then try rewriting it until there are no more misunderstandings left behind by way of poor sentence structure or unclear phrasing!

Keep sentences short when possible (longer ones break up into smaller ones instead) so as not to distract from important points made later down on the page(s). If this doesn’t work out well enough though then maybe consider rephrasing earlier paragraphs instead?

Mistake 16. Choosing An Unsuitable Font For The Business Plan

The font you use can make a big difference in the readability of your business plan. Choose a font that is easy to read and doesn’t distract from the content of your plan.

The main thing to remember when choosing a font for a business plan is that it has to be easily readable by everyone who will read it, including potential investors or partners. You don’t want them squinting their eyes as they try to decipher what you wrote!

Takeaway. There Are Mistakes You Can Avoid When Writing Your Business Plan

Your business plan is your roadmap to success. It outlines the steps you will take to get where you want to go, and every step must be carefully considered before being put into action. While many of these steps are obvious, there are some key mistakes that entrepreneurs often make when creating their business plans.

  • Not having an organized approach to writing their plans
  • Taking shortcuts in the writing process
  • Not following through with promised actions after presenting their plans


Writing a business plan can be difficult and time-consuming, but the rewards are worth it. You must avoid these common mistakes to ensure your plan is well-structured, well-researched, and easy to read. 

If you’re struggling with your business plan, then we recommend using an online tool such as Business Plan Pro or Bplans. They make it easy for anyone to create a professional-looking document without having any technical knowledge about how they work.

Further Reading

Common Business Plan Mistakes to Avoid: Learn about the most common mistakes entrepreneurs make in their business plans and how to steer clear of them.

Top Business Plan Mistakes and How to Fix Them: Find out the top business plan mistakes and get valuable tips on how to correct and improve your plan.

Top 10 Business Plan Mistakes: Discover the ten most critical business plan mistakes and gain insights on how to avoid these pitfalls.


What are the key mistakes to avoid in a business plan?

The key mistakes to avoid in a business plan include inadequate market research, unrealistic financial projections, lack of a clear value proposition, and ignoring potential competitors.

How can I fix errors in my business plan?

To fix errors in your business plan, review it thoroughly for inconsistencies and inaccuracies. Seek feedback from trusted advisors or consultants, and make the necessary revisions to ensure clarity and accuracy.

Is it essential to include a competitive analysis in my business plan?

Yes, a competitive analysis is crucial in a business plan. It helps demonstrate your understanding of the market landscape and identifies opportunities and threats posed by competitors.

Should I focus on long-term or short-term goals in my business plan?

A well-balanced business plan should include both long-term and short-term goals. Long-term goals provide a vision for the future, while short-term goals outline immediate actionable steps to achieve them.

How can I ensure my business plan is compelling to investors?

To make your business plan compelling to investors, ensure it has a clear and captivating executive summary, a thorough market analysis, a solid financial forecast, and a well-defined strategy for growth and success.