How to Incorporate a Business in Colorado
Bizee helps entrepreneurs incorporate in Colorado. Learn the steps, state fees, filing requirements, and what to expect after you form a Colorado corporation.
Bizee Editorial Staff
Editorial Team
Colorado corporation at a glance
Filing fee: $50 (online filing with the Colorado Secretary of State)
Processing time: Typically 1–2 business days for online filings
State agency: Colorado Secretary of State — Business Division
Annual report due: Periodic report due annually within the month of the corporation's anniversary date
State tax rate: 4.4% flat corporate income tax rate (as of 2024)
How to incorporate in Colorado
To incorporate in Colorado, you file Articles of Incorporation with the Colorado Secretary of State, pay the $50 state filing fee, appoint a registered agent with a Colorado address, and write corporate bylaws. Most online filings are processed in 1–2 business days. After that, you'll need an Employer Identification Number (EIN) and a business bank account before you start operating.
Colorado is a straightforward state to incorporate in — the online filing portal is clear, the fee is low compared to many states, and there's no minimum number of authorized shares required. That said, a few decisions you make at formation, like how many shares to authorize and whether to elect S Corporation status, have real tax consequences down the road. It's worth thinking those through before you file.
Choose a name for your Colorado corporation
Your corporation's name must be distinguishable from any other business name already on file with the Colorado Secretary of State. It also needs to include a corporate designator — words like "Corporation," "Incorporated," "Company," or an abbreviation like "Corp.," "Inc.," or "Co."
Check name availability through the Colorado Secretary of State's business name search before you file. If you're not ready to file immediately, you can reserve a name for 120 days by filing a Statement of Reservation of Name and paying a small fee.
Appoint a registered agent
Every Colorado corporation needs a registered agent — a person or business with a physical street address in Colorado who is available during normal business hours to receive legal documents and official state correspondence on your behalf. A P.O. box doesn't qualify.
You can serve as your own registered agent if you have a Colorado street address, but many business owners use a registered agent service to keep their personal address off public records and make sure nothing gets missed.
File your Articles of Incorporation
The Articles of Incorporation is the document that officially creates your corporation. You file it online through the Colorado Secretary of State's business portal and pay the $50 state filing fee. The form asks for your corporation's name, principal office address, registered agent information, and the number of authorized shares.
Online filings are typically processed in 1–2 business days. Once the state approves your filing, your corporation legally exists.
Authorized shares
Your Articles of Incorporation must state the number of shares your corporation is authorized to issue. Authorized shares represent the maximum number of shares your corporation can issue without amending its articles. Colorado law requires this number to appear in the articles, along with the designations and rights of any share classes if you have more than one.
Colorado has no minimum number of authorized shares, so many small corporations start with 1,000 to 10,000 shares. You don't have to issue all of them right away — authorized shares are a ceiling, not a requirement. If you plan to bring on investors or issue stock options later, talk to a legal professional about how many shares to authorize at formation.
Write your corporate bylaws
Colorado doesn't require you to file bylaws with the state, but your corporation needs them. Bylaws are your internal rulebook — they cover how directors are elected, how meetings are held, how decisions get made, and how officers are appointed. Banks and investors will often ask to see them.
Write your bylaws before you hold your first board meeting. That first meeting is where directors are formally appointed, officers are named, and the corporation's initial decisions are recorded in meeting minutes.
Get an EIN and open a business bank account
An Employer Identification Number (EIN) is your corporation's federal tax ID. You need one to open a business bank account, hire employees, and file federal taxes. Apply for an EIN at no cost through the IRS website — approval is usually immediate for online applications.
A dedicated business bank account keeps your corporation's finances separate from your personal finances. Without that separation, a court could decide your corporation isn't really a distinct entity — and at that point your personal finances are fair game for business debts.
Colorado corporation taxes
A standard Colorado C Corporation pays the state's 4.4% flat corporate income tax on net income earned in Colorado, plus federal corporate income tax at the 21% federal rate. This is the "double taxation" structure — the corporation pays tax on profits, and shareholders pay tax again on dividends they receive.
If you want to avoid double taxation, you can elect S Corporation status with the IRS by filing Form 2553. An S Corp passes income through to shareholders, who report it on their personal returns. Colorado recognizes the federal S Corp election, so you won't pay the state corporate income tax at the entity level. A tax professional can help you figure out which structure makes more sense for your situation.
Ongoing compliance requirements
After you incorporate, Colorado requires you to file a periodic report each year to keep your corporation in good standing. The report is due within the month of your corporation's anniversary date — the month you originally filed your Articles of Incorporation. The filing fee is $10 for online filings.
Missing your periodic report can result in the state administratively dissolving your corporation. Beyond the annual report, you'll also need to maintain your registered agent, hold annual director and shareholder meetings, and keep your corporate records current. These aren't just formalities — they're what keeps the liability protection of your corporation intact.
Frequently asked questions
The Colorado state filing fee for Articles of Incorporation is $50 for online filings through the Secretary of State's portal. That's the minimum cost to form a corporation. You'll also need to budget for a registered agent (if you use a service), an EIN (free from the IRS), and the $10 annual periodic report fee each year.
File Articles of Incorporation online through the Colorado Secretary of State's business portal and pay the $50 state fee. Before you file, choose a distinguishable business name with a corporate designator, appoint a registered agent with a Colorado street address, and decide how many shares to authorize. After the state approves your filing, write your bylaws, hold your first board meeting, and get an EIN from the IRS.
First, form a standard corporation by filing Articles of Incorporation with the Colorado Secretary of State. Then file Form 2553 with the IRS to elect S Corporation tax status. Colorado recognizes the federal S Corp election, so there's no separate state-level election to file. The IRS deadline for the election is generally 2 months and 15 days after the start of the tax year you want the election to take effect.
Both structures limit your personal liability, but they differ in ownership, management, and taxes. A corporation issues shares, has a board of directors, and holds formal meetings — it's the right structure if you plan to raise investment or eventually go public. An LLC has members instead of shareholders, fewer formality requirements, and passes income through to members by default. For most small businesses, an LLC is simpler. For businesses planning to take on investors or issue stock, a corporation is the better fit.
Yes. Every Colorado corporation is required to maintain a registered agent with a physical street address in Colorado. The registered agent receives legal documents and official state notices on your corporation's behalf. You can serve as your own registered agent if you have a Colorado street address, or you can use a registered agent service.
It depends on your plans for the business. Colorado has no minimum number of authorized shares, so there's no wrong starting point for a small business. Many corporations start with 1,000 to 10,000 shares. Authorized shares are the maximum your corporation can issue — you don't have to issue all of them. If you plan to bring on investors or issue equity to employees, talk to a legal professional before you file so you authorize enough shares to accommodate future needs.
Online filings with the Colorado Secretary of State are typically processed in 1–2 business days. Paper filings take longer. Once the state approves your Articles of Incorporation, your corporation legally exists. Getting your EIN from the IRS after that is usually immediate for online applications.
The periodic report is Colorado's annual filing requirement for corporations to stay in good standing. It's due each year within the month of your corporation's anniversary date — the same month you originally filed your Articles of Incorporation. The online filing fee is $10. If you miss it, the state can administratively dissolve your corporation.
