Can a Minor Start a Business in Colorado? The Complete Legal Guide

Yes — a minor can run a business in Colorado. But the two legal tools every real business runs on — a limited liability entity and enforceable contracts — are largely off-limits until you turn 18. This guide walks through exactly what Colorado law allows, where the walls are, and the structures teen founders and their parents actually use to build anyway.

The short answer

Nothing in Colorado law says a person under 18 can't operate a business, earn money, or even own a stake in a company. The problems are narrower and sneakier than an outright ban:

• You can't file the paperwork. Colorado requires the person who forms an LLC or corporation to be at least 18.
• Your contracts are voidable.Until you're 18, most agreements you sign can be canceled by you — which means adults on the other side often refuse to sign at all.
• The money rails assume adults. Business bank accounts and payment processors generally require an account holder with full contract capacity.

Each wall has a workaround, and one of them — the occasional business exemption — is a genuine green light written into Colorado law. Let's take them in order.

Wall #1: A minor can't form an LLC in Colorado

Colorado's LLC statute is explicit. Under C.R.S. § 7-80-203, the person who forms a limited liability company — the organizer who delivers the articles of organization to the Secretary of State — must be eighteen years of age or older. The same rule applies to corporations: an incorporator who is an individual must be 18 or older under C.R.S. § 7-102-101 (and the nonprofit act has a matching rule).

This puts Colorado among the stricter states. Some states let a minor organize an LLC directly; Colorado does not. But notice what the statute regulates: the organizer, not the owner. Nothing in the LLC act says a minor can't be a member — that is, an owner — of a Colorado LLC. The organizer doesn't have to be a member at all. That asymmetry is the basis for the most common workaround, covered below.

Wall #2: A minor's contracts are voidable

Colorado sets the age of competence to contract at 18 (C.R.S. § 13-22-101). Below that age, the long-standing common-law rule applies: a contract signed by a minor is voidable at the minor's option. The minor can walk away from the deal — disaffirm it — while the adult on the other side stays bound.

That rule exists to protect young people from being exploited, and it does. But it has a brutal side effect for teen founders: nobody wants to sign a contract the other side can cancel at will. Suppliers, landlords, software vendors, sponsors, and clients all face the same math — a deal with a minor is a deal only one party has to keep. So they decline, or they demand an adult signature. The voidability rule doesn't stop you from making agreements; it stops serious counterparties from making them with you.

Two edges of the rule worth knowing: contracts for necessaries(food, shelter, essential goods) generally can't be fully escaped, and once you turn 18 you can ratify a contract you signed as a minor — by affirming it or simply continuing to perform — at which point it binds you like any other agreement.

What Colorado explicitly allows: the occasional business law

In 2019, Colorado passed Senate Bill 19-103 — the "Legalizing Minors' Businesses" act, informally the lemonade-stand law. It says local governments cannot require a license or permit for a business operated by a minor on an occasional basis — defined as operating no more than 84 days in a calendar year — as long as the business is far enough from commercial competitors.

That's a real, statutory green light for the starter tier of teen entrepreneurship: the lawn-care route, the summer bake-sale operation, the weekend car-detailing hustle. No city or county permit office can shut it down for lack of a license.

The structures that actually work

A parent or guardian as organizer, the teen as member

Because C.R.S. § 7-80-203 restricts only who may form the LLC, the standard Colorado structure is: a parent or guardian acts as organizer and files the articles of organization, and the teen is named a member — an owner — of the company. The operating agreement then does the heavy lifting: it documents the teen's ownership, defines who manages the company, and — because a minor member's signature carries the same voidability problem as any other minor contract — typically routes signing authority for binding agreements through an adult member or manager until the teen turns 18.

Done properly, the teen owns and runs the business day to day, and the structure gives counterparties an adult signature they can rely on. Done casually — a generic template with no thought given to authority, ownership, or what happens at 18 — it can leave the parent personally exposed or the teen owning nothing on paper. This is a place where an hour of actual legal help earns its keep.

An adult co-signer on key contracts

For teens not ready to form an entity, the working pattern is an adult — usually a parent — signing or co-signing the contracts that matter. The adult is bound even if the minor could disaffirm, which gives the counterparty the enforceable promise it needs. The tradeoff is equally plain: the adult is on the hook, personally, for that obligation.

Forming out of state — usually not worth it

You'll see advice online to form your LLC in a state that lets minors organize, then operate in Colorado. Read the fine print before you do. A company formed elsewhere that transacts business in Colorado must register here as a foreign entity — adding a second filing, a second annual report, and a registered-agent cost in both states — and none of it fixes the real problem, because contract voidability follows the minor, not the entity's state of formation. For most Colorado teen founders, the parent-as-organizer structure is simpler, cheaper, and more honest about where the legal risk sits.

Taxes, EINs, and bank accounts

Business income is taxable at any age. A teen with net self-employment earnings of $400 or more in a year generally must file a federal return and pay self-employment tax, whether or not a parent claims them as a dependent. The business can obtain an EIN, and for an LLC the responsible party on the EIN application will typically be the adult in the structure. Banks set their own rules: most require an adult on any account held by a minor, so teen-run businesses usually operate through a jointly held or custodial account, or through the LLC's account opened by the adult member or manager.

Why the law is like this — and the push to change it

None of these rules were written to stop teenagers from building companies. The infancy doctrine is centuries old and exists to protect minors from predatory adults. The organizer-age rules piggyback on contract capacity. The result, though, is a legal system in which a 16-year-old can write software used by thousands of people but can't sign the hosting agreement it runs on.

We think the protective purpose and a workable path for young founders can coexist — other states have started experimenting with exactly that. YLab, Available Law's youth-led legal and business lab, is organizing teen founders in Colorado to make that case to lawmakers: a framework under which under-18 entrepreneurs can form LLCs and enter enforceable business contracts with appropriate safeguards. The barriers described in this guide aren't just friction to route around — they're the agenda.

Frequently asked questions

Can a minor own an LLC in Colorado?

Yes. Colorado law restricts who may organize an LLC (18+ under C.R.S. § 7-80-203), not who may be a member. A minor can own membership interests in a Colorado LLC formed by an adult organizer.

Can a teenager sign a binding contract in Colorado?

Generally no. Under Colorado law a person gains full capacity to contract at 18, and contracts signed before then are voidable at the minor's option — which is why counterparties insist on an adult signature.

How old do you have to be to start a business in Colorado?

There is no minimum age to operate a business, and SB19-103 protects occasional businesses (84 days or fewer per calendar year) from local license and permit requirements. But forming an LLC or corporation requires an organizer or incorporator who is at least 18.

Does a teen have to pay taxes on business income?

Yes. Net self-employment earnings of $400 or more in a year generally trigger a federal filing requirement and self-employment tax, regardless of age or dependent status.

What's the most affordable way for a teen founder to get a lawyer?

Traditional hourly counsel rarely makes sense at teen-business scale. YLab membershipis Available Law's answer: the same attorney-backed subscription our business clients use, at a 20% youth discount — $40/month for Build — with a parent or guardian holding the account.

The bottom line

Colorado lets minors hustle but not incorporate. The occasional business law covers the first 84 days; after that, a serious teen-run business needs an adult in the legal structure — as organizer, as signer, or both — until the founder turns 18. Set it up deliberately, in writing, with clear ownership and signing authority, and the structure becomes a launchpad instead of a liability.

If you're a teen founder in Colorado — or the parent of one — YLabexists for exactly this: real attorney backup for the entity setup, the operating agreement, and the contracts, plus a community of founders who aren't waiting until 18.