Colorado starts from the tax base used by the audited state engine

The Colorado path does not multiply gross salary or gross contractor revenue by an arbitrary effective percentage. The state calculation uses the state starting point defined by the audited model, keeping the Colorado layer separate from the federal payroll-tax and income-tax calculations.

That separation matters in a W-2 versus 1099 comparison because the two sides can have different deductions, payroll-tax treatment and business costs before the final take-home numbers are compared. It also avoids the false precision of a single shortcut percentage applied to every worker.

Contractor overhead can move the Colorado break-even target

A contractor may personally fund insurance, software, equipment, accounting, professional fees and other ordinary business costs. The 1099 side also includes federal self-employment tax within the current model. Those inputs can materially change how much gross contractor compensation is needed to equal a W-2 package.

Enter your actual expected costs instead of assuming a standard contractor premium. The solver searches for the annual 1099 gross that approximately reproduces the W-2 estimated net amount, giving you a financial floor that reflects your scenario rather than a generic rule of thumb.

Use realistic utilization when converting annual break-even to hourly pay

A contractor billing 2,000 hours has a lower hourly break-even than someone billing 1,500 or 1,800 hours because the same annual target must be earned in fewer revenue-producing hours. Vacation, holidays, administration, sales, training and gaps between engagements can all reduce utilization.

Use the calculator presets to test several hour assumptions, then evaluate whether you need a margin above break-even for benefits, contract risk and desired profit. The statewide result is a planning estimate and does not represent every filing-specific, local, business or industry obligation that may apply in Colorado.