Avoid These Costly LLC Mistakes

What to Expect in This Blog

Starting and managing an LLC can feel overwhelming, but this blog will break down everything you need to know to avoid common mistakes and set your business up for success. Here’s what you can expect as you read through:

• Understanding LLC Basics: Learn why forming an LLC is important and how it can protect your business and personal assets.
• The Biggest LLC Mistakes to Avoid: We’ll cover the top financial, tax, and legal pitfalls that new business owners often face.
• Tax and Compliance Essentials: You’ll get a clear explanation of key tax forms, EIN usage, and income types so you can make informed decisions.
• Real Estate and LLC Structuring: If you’re investing in real estate, you’ll learn why it’s crucial to set up an LLC before purchasing property to avoid costly issues.
• How to Protect Your Business Assets: We’ll discuss when it makes sense to have multiple LLCs and how to separate liability between different businesses.
• Actionable Steps for Success: Expect practical advice on how to stay compliant, build business credit, and ensure long-term financial stability.

By the end of this blog, you’ll have a clear roadmap to confidently manage your LLC, avoid costly errors, and maximize the benefits of your business structure. Let’s dive in!

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Starting a business is an exciting and rewarding journey, and one of the first steps many entrepreneurs take is forming a Limited Liability Company (LLC). An LLC provides a level of legal protection, helping business owners separate their personal and business assets while offering potential tax advantages. However, while an LLC can be a powerful tool for business growth, making critical mistakes can expose you to unnecessary risks, tax penalties, and legal troubles.

As we move into 2025 and beyond, it’s more important than ever to establish your business correctly to avoid these costly errors. If you’re considering starting an LLC—or if you already own one—understanding these key mistakes can help protect your financial future and keep your business running smoothly.

The Importance of Using Your EIN Correctly

One of the biggest mistakes new LLC owners make is not using their Employer Identification Number (EIN) correctly. The EIN, issued by the IRS, is essentially your business’s Social Security Number—it allows the IRS to track your tax obligations. While obtaining an EIN is an easy process, many business owners fail to utilize it properly, which can lead to tax complications and even legal trouble.

Your EIN should be used to open a dedicated business bank account. Any income your LLC generates should go directly into this account, and all business-related expenses should be paid from it. Mixing personal and business finances—also known as commingling funds—is a major red flag that could jeopardize your limited liability protection. If the IRS or courts cannot distinguish between your personal and business assets, they might decide that you’re personally liable for business debts and lawsuits, completely negating the benefits of having an LLC.

Beyond legal protection, using your EIN properly is essential for building business credit. If you ever plan to apply for business loans or credit cards, lenders will want to see a clear financial history that proves your business is stable and profitable. Many entrepreneurs found themselves denied pandemic relief loans because they failed to use their EIN correctly. The lesson here is simple: keep your business and personal finances separate from the start.

Understanding Your Business Income Type

Another crucial mistake LLC owners make is not understanding the type of income their business generates. The type of income your business earns determines how it will be taxed, and choosing the wrong business structure could mean overpaying taxes or missing out on key benefits.

Ordinary Income: The Foundation of Most Businesses

Ordinary income includes W-2 wages, 1099 earnings, and other forms of active income. If your LLC generates ordinary income, you are subject to self-employment taxes, which include Social Security and Medicare taxes at a rate of 15.3%. While this might not seem like a big deal at first, it becomes a significant burden as your business grows.

If your business earns more than $50,000 per year in profit, it might be time to consider switching to an S-Corporation (S-Corp). Unlike LLCs, S-Corps allow business owners to split their income between salary and distributions, which can significantly reduce self-employment tax obligations. This strategy helps business owners save money while maintaining compliance with tax laws.

Passive Income: The Real Estate Investor’s Dream

Passive income is another common income type, often associated with rental properties and long-term investments. Unlike ordinary income, passive income is not subject to self-employment taxes, making it highly attractive for real estate investors.

Many property owners use LLCs to hold real estate assets because of the liability protection they offer. If a tenant sues you for an injury on your property, for example, only the assets held by the LLC are at risk—your personal finances remain protected. This makes an LLC an essential tool for real estate investors looking to safeguard their wealth.

Portfolio Income: Long-Term Financial Growth

Portfolio income includes capital gains from stock sales, bonds, and other investments. While most entrepreneurs don’t generate portfolio income at the start of their business journey, it becomes more relevant as they accumulate wealth. The best business structure for portfolio income depends on factors like investment strategy, tax treatment, and overall business profitability. Since portfolio income taxation varies, consulting with a tax professional is crucial to determine the right approach.

The Mistake of Buying Real Estate Before Establishing an LLC

Many new real estate investors make the critical mistake of purchasing property before setting up an LLC. While it might seem harmless to buy real estate in your personal name and transfer it to an LLC later, this can create significant legal and financial problems.

When you buy property under your own name, you become personally liable for any lawsuits related to that property. If a tenant sues you, your personal assets could be at risk. Additionally, transferring a property to an LLC after purchase can trigger the due-on-sale clause in your mortgage, meaning your lender could demand full payment of your loan immediately.

To avoid these complications, it’s best to establish your LLC before acquiring real estate. This ensures the property is purchased under the LLC’s name, maintaining legal protection and keeping your mortgage in good standing. Before making any real estate investments, consult with a tax strategist and legal expert to ensure your LLC is structured correctly.

Not Knowing Which Tax Forms to File

Many new business owners assume their CPA will handle everything related to taxes. However, not all CPAs specialize in tax planning, and simply filing your tax return doesn’t mean you’re optimizing your business for tax efficiency.

Here are some of the most important tax forms LLC owners need to understand:

• SS-4 Form – Used to apply for an EIN.
• Schedule C – Used for sole proprietors and single-member LLCs to report income.
• Form 1065 – Required for multi-member LLCs (partnerships).
• K-1 Form – Distributes business income to LLC partners.
• W-9 Form – Necessary for hiring independent contractors earning more than $600 per year.

If you plan to hire freelancers or contractors, you must ensure they complete a W-9 form before issuing payments. Many LLC owners overlook this step, leading to compliance issues when filing taxes.

Failing to Properly Reimburse Yourself for Business Expenses

It’s common for new business owners to use personal credit cards for business expenses, but failing to document these transactions correctly can cause problems during tax season. The IRS requires a clear paper trail, and using personal accounts without proper reimbursement can make your tax filings more complicated.

To avoid issues, use an Accountable Plan, which allows you to formally reimburse yourself for legitimate business expenses. This keeps your records clean and ensures you maintain compliance with tax laws. If you’re unsure how to set up an accountable plan, working with a tax professional can help simplify the process.

Should You Use One LLC for Multiple Businesses?

A common question among entrepreneurs is whether they should use one LLC for multiple businesses or form separate LLCs. The answer depends on the level of liability and risk associated with each business.

For example, if you own an Airbnb rental business and a vending machine business, it’s wise to separate them into two different LLCs. These businesses have completely different risks—if someone sues your vending machine business for a defective product, you don’t want your real estate assets at risk.

Keeping separate LLCs for different businesses ensures that one lawsuit or financial issue won’t jeopardize your other business ventures. While managing multiple LLCs might require additional paperwork, the legal and financial protection is well worth it.

Final Thoughts: Avoid These Mistakes for Long-Term Success

Starting and running a successful LLC requires more than just filling out paperwork—you need to understand tax laws, financial management, and liability protection. By avoiding these common mistakes, you can build a strong foundation for your business while ensuring legal compliance and tax efficiency.

If you’re unsure about the best approach for your LLC, consider working with a Northstar Consultant who can guide you through entity selection, tax planning, and business structuring. Making the right decisions today can save you thousands of dollars and protect your assets in the long run.