S Corp vs. LLC: What's the Difference?

If you're deciding between an LLC and an S corporation, here's the most important thing to know:

An LLC is a business structure. An S corporation is a tax election.

That means you don't always have to choose one or the other. In fact, many small businesses form an LLC for liability protection and later elect S corporation tax status to potentially reduce self-employment taxes.

The right choice depends on:

• your profits,

• how involved you are in the business,

• your growth plans,

• and how much ongoing administration you're willing to manage.

This guide explains the differences, compares the pros and cons, and helps you determine which option may be the better fit.

S corp vs. LLC at a glance

What is an LLC?

A limited liability company is a legal business structure that separates your personal assets from your business liabilities.

For many entrepreneurs, it offers the best combination of simplicity and protection. It is relatively easy to form, requires fewer formalities than a corporation, and gives owners flexibility in how the business is managed.

By default, a single-member LLC is generally taxed like a sole proprietorship, while a multi-member LLC is generally taxed like a partnership. An LLC can also elect S corporation taxation if it meets IRS requirements.

What is an S corporation?

An S corporation is a federal tax classification available to eligible businesses.

Rather than changing your legal entity, it changes how your business is taxed.

Business income generally passes through to the owners instead of being taxed at both the corporate and individual levels.

The biggest difference is owner compensation.

If you actively work in the business, the IRS expects you to receive reasonable compensation through payroll. Additional profits may then be distributed separately, and those qualifying distributions generally are not subject to self-employment tax.

Tax differences

Taxes are often the primary reason businesses elect S corporation status.

With a default LLC, the owner usually pays self employment taxes on the entire business profit.

With an S corporation, compensation is divided into two parts.

This structure can reduce payroll taxes for businesses with steady profits, but only if the salary is reasonable and payroll is managed correctly.

Here is a simplified example.

Every business is different, so potential savings depend on profit, salary, payroll costs, and state taxes.

Ownership and management

The two structures also differ in how ownership and operations are handled.

If your long-term plans include outside investors or multiple ownership classes, these differences become especially important.

Pros and cons

LLC advantages

• Simple to form and operate

• Liability protection

• Flexible ownership and management

• Fewer ongoing administrative requirements

• Multiple tax options available

LLC disadvantages

• Self-employment taxes often apply to all business profits

• Fewer payroll tax planning opportunities without an S election

S corporation advantages

• Potential self-employment tax savings

• Pass-through taxation

• Liability protection through the underlying entity

• Can create a more structured business operation

S corporation disadvantages

• Payroll is required for active owners

• Additional bookkeeping and compliance

• Ownership restrictions

• More ongoing administrative work

Which option is right for you?

For many businesses, the decision is not actually LLC versus S corporation.

Instead, the question is whether your LLC should continue using its default tax treatment or elect S corporation taxation.

An LLC may be the better choice if you:

• Are starting a new business

• Have modest profits

• Want a simple business structure

• Prefer minimal paperwork

An S corporation may be worth considering if you:

• Have consistent profits

• Can comfortably support payroll

• Want to reduce self-employment taxes

• Are prepared for additional compliance

Many businesses begin as LLCs and elect S corporation status later as profits grow.

Decision checklist

Frequently asked questions

Can an LLC become an S corporation?

Yes. An eligible LLC can elect S corporation taxation by filing IRS Form 2553 with the IRS.

Is an LLC better than an S corporation?

Neither is inherently better. An LLC is a legal entity, while an S corporation is a tax election. Many businesses benefit from combining both.

Does an S corporation reduce self employment taxes?

It can. Active owners pay payroll taxes on reasonable compensation, while qualifying profit distributions generally are not subject to self employment tax.

Do S corporations require payroll?

Yes. Owners who actively work in the business are generally required to receive reasonable compensation through payroll.

Can I change my business structure later?

Yes. Many business owners start with an LLC and elect S corporation taxation once their business becomes consistently profitable.

Key takeaway

An LLC and an S corporation are not competing business structures. An LLC establishes your legal entity, while an S corporation changes how an eligible business is taxed. For many entrepreneurs, forming an LLC first and electing S corporation taxation later offers the right balance of liability protection, operational flexibility, and potential tax savings. The best choice depends on your current profits, future growth plans, and your ability to manage payroll and ongoing compliance.