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Top Mistakes to Avoid When Setting Up an LLC

Jun 27, 2025 | LLC

Setting up an LLC is a smart move for many business owners, but skipping critical steps can lead to legal, financial, and operational problems. This blog breaks down the most common mistakes people make—from ignoring operating agreements to mixing personal and business finances—and explains how to avoid them. With the right guidance, your LLC can be both compliant and strong from day one.

Key Takeaways:

  • Always draft a customized operating agreement, even if you’re a solo owner.
  • Keep business finances separate and stay on top of state compliance requirements.
  • Don’t rely solely on online DIY services—professional legal help can save time, money, and stress.

Starting your own business is exciting. Choosing to form a limited liability company (LLC) can be a smart move—it gives you liability protection, flexible taxation, and a professional structure. But here’s the thing: just forming an LLC isn’t enough. There’s a right way and a wrong way to do it, and if you miss key steps, you could end up with more headaches than benefits.

Whether you’re launching a side hustle or turning a dream into a full-time gig, avoid these common mistakes when setting up your LLC.

1. Not Understanding What an LLC Really Is

Before anything else, know what you’re signing up for. An LLC is a legal entity that separates your personal assets from your business liabilities. It’s not a tax classification, not a business license, and not a magic shield that fixes everything. If you’re unclear on what an LLC does—or doesn’t do—you’re more likely to set it up wrong from the start.

Pro tip: Talk to an attorney or tax advisor to make sure an LLC is even the right choice for your business.

2. Skipping the Operating Agreement

Even if you’re the only owner (called a “member”), skipping the operating agreement is a bad move. This document lays out how your LLC operates—who owns what, how profits are divided, what happens if someone leaves, and more.

Without it, your business is legally a mess. Courts may decide how your company should run, not you.

Bonus mistake: Downloading a generic template and never customizing it. Each business is different. Your agreement should reflect that.

3. Choosing the Wrong Business Name

Your name matters. Not just for branding, but legally. You can’t pick a name already in use or too similar to another LLC in your state. Some people register a name and later get hit with a cease-and-desist or are forced to rebrand.

Solution: Do a proper name search with your state’s business registry. Better yet, also check trademarks and domain availability.

4. Failing to Register in the Right State

A lot of online advice says to form your LLC in Delaware or Nevada for tax benefits. But if you’re operating in Utah—or anywhere else—you may still need to register your LLC in that state as a “foreign” entity. That means extra fees, extra paperwork, and possibly double compliance.

Bottom line: If your business is based in Utah, your LLC should be registered there.

5. Using Your Personal Bank Account

Mixing personal and business finances is one of the fastest ways to “pierce the corporate veil”—that legal protection your LLC is supposed to give you.

Open a separate business bank account. Use it only for business expenses and income. It keeps your accounting clean and protects your personal assets in case of a lawsuit.

6. Not Getting an EIN

An Employer Identification Number (EIN) is like a Social Security number for your business. Even if you don’t have employees, you’ll probably need one to open a bank account, file taxes, or apply for certain licenses.

Mistake alert: Some people pay third-party companies to get their EIN. But it’s free on the IRS website. Don’t get scammed.

7. Ignoring Required Business Licenses

Forming an LLC isn’t the same as getting permission to do business. Depending on what you do, you may need city, county, or state licenses to operate legally.

For example, if you’re running a food truck, a real estate business, or a home daycare in Utah, there are specific licensing requirements beyond just forming an LLC.

8. Forgetting Annual Reports and Fees

Once your LLC is formed, it’s not “set it and forget it.” Most states, including Utah, require you to file an annual report and pay a fee to stay in good standing.

Skip it, and your LLC can be dissolved by the state—even without your knowledge.

Set reminders: Put annual filing deadlines on your calendar and make sure the state has your correct contact info.

9. Improperly Classifying Workers

Hiring people? Be careful about calling them “independent contractors” just to avoid payroll taxes. If the IRS decides they’re employees, you could face penalties, back taxes, and legal trouble.

Use clear contracts, follow IRS guidelines, and consult an employment attorney if needed.

10. Assuming All LLCs Are Taxed the Same

One of the best things about an LLC is its tax flexibility. You can be taxed as a sole proprietorship, partnership, S corp, or C corp. But too many business owners default to the standard structure without considering the tax implications.

For example, electing S corp status can save money on self-employment taxes—but only if your business earns enough and you’re paying yourself a reasonable salary.

Don’t guess: Talk to a CPA.

11. Neglecting to Protect Your Intellectual Property

Just because you formed an LLC doesn’t mean your brand name, logo, or content is legally protected. If someone else trademarks your business name before you do, they could force you to stop using it—even if you’ve been using it longer.

Action step: Consider trademarking your name, logo, or any proprietary products or services.

12. Letting DIY Services Do All the Thinking

Online LLC formation services can be convenient, but they often give a false sense of security. They file forms—but they don’t give legal advice or make sure your setup makes sense for your goals.

Ask yourself: Are you trying to save a few bucks now and pay way more later when you need to fix it?

13. Failing to Document Major Decisions

Every time you take on a new partner, make a big loan, or change your business structure, you should document it. This is especially true if your LLC has more than one member.

Why it matters: Documentation can prevent disputes, support your position in court, and help with taxes or audits.

14. Overlooking Liability Insurance

An LLC limits personal liability, but it doesn’t make you lawsuit-proof. If your business is sued for negligence, data breaches, or injuries, the LLC might not cover everything.

Next step: Get general liability insurance—or industry-specific coverage. It’s a layer of protection you’ll be glad to have.

15. Not Getting Professional Help

Setting up an LLC isn’t rocket science—but it’s not something to wing either. If you get it wrong, it can cost you in legal fees, tax penalties, or lost business.

Hiring a professional—like a business attorney or accountant—can save you time, money, and stress.

Final Thoughts

Forming an LLC is a powerful step toward building a serious business. But like any legal structure, it only works if you set it up correctly and maintain it properly. Avoid these common mistakes, and you’ll be miles ahead of most new business owners.

Need Help Setting Up Your Utah LLC the Right Way?

ProvenLaw can make sure your LLC is legally solid from day one. We handle the paperwork, the compliance, and all the legal fine print—so you can focus on building your business. Get in touch today to arrange a free, no-obligation consultation, and let’s make sure your foundation is as strong as your vision.

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