A Colorado LLC pays the flat 4.4% Colorado personal income tax on profit sourced to the state, with no separate franchise tax on the LLC. The IRS default treats a single-member LLC as a disregarded entity and a multi-member LLC as a partnership, so profit passes through to the owners. An S-corporation election on Form 2553 cuts self-employment tax once net income exceeds $40,000-$60,000. Non-resident-owned single-member LLCs file Form 5472 with a pro-forma Form 1120 each year.
By default the IRS treats a single-member Colorado LLC as a disregarded entity, taxed on Schedule C of the owner's personal 1040, and a multi-member LLC as a partnership filing Form 1065 with K-1s to members. Neither default carries a federal entity-level tax; profit flows through to the owners' returns. The LLC still needs an EIN to file, open a bank account, and hire. This pass-through structure is why most founders keep the default rather than electing corporate treatment until profit justifies it. Pass-through means the LLC itself pays no federal income tax; the profit is taxed once, on the owners' returns. This avoids the double taxation a C-corporation faces, where the entity pays tax and the shareholders pay again on dividends. The default treatment fits the great majority of small Colorado LLCs and remains in place until the owner files an election to change it.
Colorado applies a flat 4.4% personal income tax to LLC profit sourced to the state. There is no separate Colorado franchise tax on the LLC itself. Because the LLC passes through, members report their share of Colorado-sourced profit on their Colorado returns and pay the 4.4% rate. A multi-member LLC files a Colorado partnership return, and non-resident members with Colorado-sourced income file a Colorado nonresident return. The rate is flat, so it does not rise with income the way a bracketed state tax would. Colorado sources income to where the business activity happens, not to where the LLC is registered. Profit earned from Colorado customers, property, or operations is Colorado-sourced and taxed at 4.4%, whether the LLC is a Colorado LLC or a Wyoming LLC foreign-qualified into Colorado. Registering elsewhere does not move the tax if the income is earned in Colorado.
No. Colorado imposes no franchise tax on LLCs. The only recurring state charge is the $10 periodic report filed with the Secretary of State. Profit passes through to members, who pay the flat 4.4% Colorado income tax on their share. Single-member LLCs are disregarded and report on the owner's return; multi-member LLCs are taxed as partnerships at the member level. This makes Colorado's ongoing state cost low compared with Delaware's $300 annual franchise tax.
A Colorado LLC benefits from an S-corporation election once net income exceeds $40,000-$60,000 per year, because it splits earnings into salary and distributions and cuts self-employment tax on the distribution portion. The election is made on IRS Form 2553. The owner pays a reasonable salary subject to payroll tax, and the remaining profit avoids the 15.3% self-employment tax. Below that income range, the payroll compliance cost outweighs the savings. Colorado's flat 4.4% income tax applies the same way whether or not the S-corp election is in place. An S-corp election adds real obligations: running payroll, filing Form 941 each quarter, issuing a W-2, and paying a defensible reasonable salary. The tax saved on the distribution portion has to clear those costs before the election pays off. This is why the $40,000-$60,000 threshold matters, and why a preparer models the numbers before the election is filed.
A default Colorado LLC owner pays 15.3% federal self-employment tax on net business income: 12.4% Social Security up to $168,600 plus 2.9% Medicare with no cap. That is on top of the flat 4.4% Colorado income tax and any federal income tax. An S-corporation election reduces the self-employment portion by treating part of the profit as a distribution rather than wages, but it adds payroll filing and reasonable-salary compliance. The election becomes worthwhile once net income clears the $40,000-$60,000 range.
A non-resident's US tax on a Colorado LLC depends on Effectively Connected Income (ECI). An LLC with no US ECI owes a Form 5472 information filing but no US income tax; an LLC with US ECI is subject to US income tax. Colorado income tax still applies to profit sourced to Colorado regardless of the owner's residence. A non-resident-owned single-member LLC that is a disregarded entity files Form 5472 with a pro-forma Form 1120 each year, and a multi-member LLC files Form 1065 with K-1s. Anonymousllc.co partners with US tax preparers familiar with non-resident filings.
Form 5472 is a federal information return required for any US disregarded entity with 25% or more foreign ownership. A non-resident-owned single-member Colorado LLC files it annually alongside a pro-forma Form 1120. The form reports transactions between the LLC and its foreign owner, such as capital contributions and distributions. It is an information filing, not an income tax, so an LLC with no profit still files it. Missing Form 5472 carries a $25,000 IRS penalty, which is why Anonymousllc.co flags the requirement for every foreign-owned single-member LLC. The filing pairs Form 5472 with a pro-forma Form 1120 that carries the LLC's identifying details, since a disregarded entity has no return of its own. The deadline follows the corporate calendar, and an extension is available on Form 7004. A non-resident owner treats this as a fixed annual step, separate from any US income tax, and hands it to a preparer familiar with foreign-owned LLCs.
Colorado's flat 4.4% personal income tax applies to LLC profit sourced there, while Wyoming and Nevada levy no state personal income tax at all. Owners operating entirely outside Colorado sometimes form in a no-income-tax state instead. Colorado income tax follows where income is earned, not only where the LLC is registered, so a Wyoming LLC with Colorado-sourced profit still owes Colorado tax on that profit. The state-tax saving is real only when the business income is not sourced to Colorado in the first place. For a Colorado resident running a Colorado business, forming in Wyoming does not dodge the 4.4% tax; the profit is still Colorado-sourced and taxed. The no-income-tax states help a remote founder whose income has no Colorado nexus, or a holding company that earns passive income outside the state. Matching the formation state to where income is actually earned is what determines the real tax result.
An LLC with no net income owes no Colorado income tax, because the flat 4.4% rate applies only to taxable profit. Members still report the LLC on their federal returns, and a non-resident-owned single-member LLC must file federal Form 5472 with a pro-forma Form 1120 regardless of profit. The Colorado $10 periodic report is also due each year to keep the LLC in good standing, independent of whether the business earned anything. A zero-profit year removes the income tax but not the compliance filings.
No. Under the March 21, 2025 FinCEN interim final rule, domestic reporting companies are exempt from beneficial ownership reporting. Most Colorado LLCs are domestic and file nothing. Foreign reporting companies (LLCs formed outside the US and registered to do business here) remain obligated. A Colorado LLC formed by a non-resident is still a domestic US entity, so the exemption applies. Anonymousllc.co monitors FinCEN rule changes and flags any client whose BOI status shifts.
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