When most business owners start out, they form an LLC. It’s fast, it’s simple, and it feels like the right move. And at the beginning it probably was.

But if your business is doing $500K or more and you’re still operating out of a single LLC — that simple structure is now one of the most expensive decisions you’re making every year.

Here’s exactly why.

1. You’re Paying Self-Employment Tax on Every Dollar of Profit

A single-member LLC is a pass-through entity. Every dollar of profit passes directly to your personal tax return and gets hit with self-employment tax — 15.3% on the first $160,000 and 2.9% above that — on top of your federal and state income tax.

For a business doing $500K in profit that’s a self-employment tax bill that can exceed $20,000 annually — before you even get to income tax.

An S-Corp election or a C-Corp structure splits your income into salary and distributions. Distributions are not subject to self-employment tax. For most business owners at this level that one change saves $15,000 to $30,000 per year.

2. Everything You Own Is Exposed

A single LLC provides some liability protection — but it has limits. If your business gets sued, a judgment creditor can potentially come after your personal assets depending on how your accounts and operations are structured.

More importantly if you have multiple business ventures, investments, and assets all sitting inside or connected to one entity — one lawsuit can threaten all of it.

A properly structured multi-entity stack puts every venture, every asset, and every investment in its own ring-fenced entity. A lawsuit against one can’t touch the others.

3. You’re Retaining Earnings at the Wrong Tax Rate

When your LLC passes profits through to your personal return, you pay tax at your personal rate — up to 37% federally.

A C-Corp retains earnings at the 21% flat corporate rate. That’s a 16-point difference on every dollar you don’t need to take as personal income.

For a business retaining $200,000 per year that difference is $32,000 annually — money that stays inside the business to fund growth, retirement contributions, or future investment instead of going to the IRS.

4. You Have No Shared Services Deduction

If you run multiple businesses or have multiple income streams — consulting, real estate, investments, a side venture — a single LLC gives you no mechanism to efficiently deduct the overhead that supports all of them.

A Shared Services LLC sits at the center of your entity structure and employs your staff, manages your systems, and handles your overhead. It bills each operating entity a management fee — which is deductible for each entity. This creates a write-off engine that works across your entire financial life.

Without it you’re leaving legitimate deductions on the table every year.

5. You Have No Exit Strategy

When the time comes to sell your business — or pass it to the next generation — the entity you’re in determines how much of the sale price you actually keep.

A C-Corp that qualifies for Section 1202 QSBS allows you to exclude up to $10 million in capital gains from federal tax completely. That’s a strategy that requires you to have been in the right structure for at least five years before the sale.

If you’re in a single LLC today and planning to sell in five years — you’ve already started the clock on the wrong vehicle.

The Bottom Line

A single LLC made sense when you started. At $500K and above it’s one of the most expensive structures you can be in.

The right multi-entity structure — C-Corp at the center, LLC subsidiaries, Shared Services entity, and the right exit vehicle — can legally reduce your annual tax bill by $80,000 to $300,000 depending on your revenue and situation.

We built a full breakdown of exactly how this structure works and what each layer does.

Or if you’re ready to talk about your specific situation:

JW Tax & Consulting, LLC — Veteran Owned Plano, TX · Fort Lauderdale, FL