How to Start an S Corp in Colorado: Steps, Costs & Rules (2026)

"S corp" is one of the most searched phrases among new U.S. business owners, and Colorado is one of the cheapest states to start a company. But here's the twist most guides bury: you can't actually form an S corp. There's no "S corp" button on the Colorado Secretary of State's website.

An S corp is a tax status, not a type of business. You first form an LLC or a corporation in Colorado, then ask the IRS to tax it as an S corporation. So learning how to start an S corp in Colorado really means getting both halves right, and checking one ownership rule that rules out many international founders before they even begin.

What Is an S Corp, Really?

An S corporation is a federal tax election. Instead of the company paying corporate income tax, profits and losses "pass through" to the owners' personal tax returns.

The big attraction is how owners get paid. An owner who works in the business takes a reasonable salary, which is subject to payroll taxes, and can take remaining profits as distributions, which aren't subject to self-employment tax. That split is where S corp tax savings come from, usually once profits are high enough to justify the cost of running payroll.

Who Can Own an S Corp? Read This First

The IRS has strict ownership rules. An S corp can have:

• No more than 100 shareholders
• Only one class of stock
• Individual shareholders, with limited exceptions such as certain trusts and estates, and generally not other companies
• Only U.S. citizens or U.S. tax residents as shareholders

That last rule matters most for our readers. A nonresident alien cannot own S corp shares. If you live in India and aren't a U.S. tax resident, you can't be an S corp shareholder. And if a non-resident ever becomes a shareholder later, the S election ends automatically.

U.S. tax residents, such as green card holders and visa holders who meet the IRS substantial presence test, generally can be shareholders. Visa work rules are a separate question, so check those with an immigration lawyer.

If you live outside the U.S., jump to the section on non-resident founders below. There's a better path for you.

How to Start an S Corp in Colorado: 6 Steps

Step 1: Choose an LLC or a Corporation

Both can elect S status. An LLC is simpler to run, with fewer formalities. A corporation needs bylaws, directors and issued stock, but some owners prefer its familiar structure. Most small business owners choose the LLC route.

Step 2: Pick a Name and a Registered Agent

Search the Colorado Secretary of State's business database to confirm your name is available. You'll also need a registered agent with a Colorado address to receive legal mail. Not sure what that involves? Our guide to what an LLC registered agent does covers it.

Step 3: File Online with the Colorado Secretary of State

File Articles of Organization (for an LLC) or Articles of Incorporation (for a corporation). The fee is $50, Colorado accepts these filings online only, and approval is often fast. The state fee is the same whether or not you later elect S status.

Step 4: Get Your EIN

Apply for a free Employer Identification Number from the IRS. You'll need it for the S election, payroll and your bank account. Our EIN guide walks through the IRS application step by step.

Step 5: File IRS Form 2553

This is the step that actually makes your company an S corp. Every shareholder must sign Form 2553, and it's generally due no more than 2 months and 15 days after the start of the tax year you want the election to take effect. Miss it, and your company is taxed under its default classification for that year, though the IRS does offer late-election relief in some cases.

Colorado generally follows your federal S status, so there's no separate state election form.

Step 6: Set Up Payroll and State Tax Accounts

Because owner-employees must take a reasonable salary, you'll need to register for Colorado wage withholding with the Department of Revenue and unemployment insurance with the Colorado Department of Labor and Employment. Each year, you'll file federal Form 1120-S and Colorado Form 106.

How Much Does It Cost?

The state fees are refreshingly low:

• Formation filing: $50
• EIN and Form 2553: free
• Periodic Report: $25 every year
• Late Periodic Report penalty: $50

Pro tip: Colorado's Periodic Report is due during a three-month window around your company's anniversary month each year. Put it in your calendar on day one.

The real cost of an S corp isn't the state fee. It's payroll and tax preparation. That's why an S corp usually only makes financial sense once your business earns steady, meaningful profit.

What If You Live Outside the U.S.?

You can't own an S corp, but you can still build a U.S. business, in Colorado or anywhere else.

• An LLC is the most common choice for freelancers, agencies and SaaS founders. A single-member, foreign-owned LLC has its own tax rules and yearly IRS filings, explained in our US LLC tax guide for Indian founders.
• A C-Corp suits founders planning to raise investment or issue stock to a team. It pays its own corporate tax, but it has no restrictions on foreign owners.

Colorado isn't your only option, either. Our comparison of the best state to form an LLC from India shows how states differ on yearly costs.

Common mistake: A non-resident filing Form 2553 anyway. The election isn't valid, and untangling it later means extra filings, accountant fees and possible penalties.

Is an S Corp Right for You?

An S corp can be a smart choice for U.S.-resident owners with steady profits who are ready to run payroll. It's usually the wrong fit for non-resident founders, venture-backed startups that need multiple share classes or corporate investors, and very early businesses that aren't yet profitable.

Get Your Structure Right from Day One

Choosing between an LLC, a C-Corp and an S corp election affects your taxes for years. FormLLC helps founders pick the right structure, form the company in Colorado or any other state, get an EIN and stay compliant.

Not sure which one fits your situation? Book a free consultation and talk to our team.