Colorado taxes when you sell the business

A sale is a tax event and a household event, and they do not arrive on the same day. The wire hits, the company changes hands, and the return is still months away. This page is about the planning side of Colorado income tax for an owner who may sell. It is not a tax return, and it is not a number you should take to a closing. Vital Investment Management does not prepare tax returns. Dillon Goodman is a Colorado CPA and a CFP®. That background belongs in the planning conversation. The return belongs to your CPA.

Colorado starts from federal taxable income. The Colorado Department of Revenue’s Individual Income Tax Guide (January 2026) says the state rate varies by tax year. The guide’s table lists 4.4% for 2025 and 4.25% for 2024. The 2025 Colorado Individual Income Tax Filing Guide says the income tax rate is currently 4.4%. The Office of the State Auditor describes the individual and corporate Colorado income tax as 4.4 percent of Colorado taxable income. Legislative Council staff describe the calculation as a flat 4.40 percent applied to federal taxable income after Colorado additions and subtractions. The General Assembly’s 2026 Blue Book describes the state’s current flat income tax rate as 4.4 percent. Read those sentences together. The rate is flat, it is not frozen, and 2024 already showed a lower year. The year that matters is the year the income is recognized. Your CPA is the person who says which year that is.

What kind of income a sale actually creates

Owners often talk about “the capital gain” as if the whole price were one number with one character. It usually is not. An asset sale and a sale of equity can put capital gain and ordinary income on the same closing statement, depending on what is sold and how the entity is taxed. Inventory, depreciation recapture, and a covenant not to compete do not behave like the sale of stock. IRS Publication 544 is the federal discussion of sales and other dispositions of assets. This page does not reprint federal brackets, exclusion percentages, or a sample tax. Those figures move, and a worked example that is wrong is worse than none.

Timing is the planning point that does not need a fake bracket. An installment sale can spread recognition across more than one year. IRS Publication 537 is the installment-sale publication. Whether that helps depends on the contract, the buyer’s credit, and the rest of the owner’s income in those years. Colorado tax follows the federal taxable income that results. It does not invent a separate Colorado capital-gains rate on this page, because the Department’s own material treats the state tax as a flat percentage of Colorado taxable income.

What we will and will not do with that

The useful work, before anyone drafts a letter of intent, is to know whether the household can live with the after-tax proceeds, not the headline price. Cash that has to come out of the company to pay the tax is not investable cash. Cash that can stay invested is a different problem, described in investing business sale proceeds and pre-sale tax and charitable planning. The sequence around a sale is still the one in exit as a multi-year project and on the business transition page. Fort Collins owners who want the local version of that conversation can read business exit planning in Fort Collins.

Nothing here is a promise of a tax result, a sale price, or an investment outcome. Registration as an adviser does not imply a certain level of skill or training. Vital is a fee-only, SEC-registered investment adviser (CRD #300811). Bring your CPA and your attorney into the deal. We coordinate with them. We do not replace them.

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