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Denver

Bookkeeping services in Denver

Outsourced bookkeeping for Denver companies, including the per-employee occupational privilege tax that has nothing to do with income.

Parag Jain, CPA
Parag Jain, CPAFounder, Zinance·Last updated August 2026·5 min read

Summarize this article

At a glance

Colorado corporate tax
Flat rateNot bracketed, which simplifies reserving
Denver OPT
Charged per employeeA flat monthly amount, not a percentage
Both halves
Employee and employer portionsThe employer owes its share regardless

Colorado's state corporate tax is refreshingly simple: a flat rate rather than brackets, which makes reserving straightforward. Denver adds something less obvious.

A head tax, not an income tax

The Occupational Privilege Tax is charged per employee per month as a flat dollar amount, split into an employee portion withheld from pay and an employer portion the company owes on top. It scales with headcount, not with revenue or profit.

Why this trips up payroll

Because it is a flat per-head charge rather than a percentage, it does not fall out of a standard payroll calculation the way income tax withholding does. It has to be configured deliberately, and it is one of the more common things we find missing when we take over a Denver company's books.

What a growing headcount means here

Hiring in Denver adds a small, predictable, recurring liability per person. It is never large enough to change a hiring decision, and it is exactly the kind of thing that quietly accrues unfiled if nobody set it up.

What we do for Denver companies

Daily categorisation, a monthly close with a named accountant, payroll configured so the OPT is actually withheld and remitted, and burn and runway kept current as headcount grows. Delaware C-corps get the franchise tax alongside.

Frequently asked questions

What is the Denver occupational privilege tax?+
A flat per-employee, per-month charge with an employee portion withheld from pay and an employer portion the company pays. It is based on headcount rather than income, so it applies whether or not the company is profitable.
Is Colorado corporate income tax bracketed?+
No, Colorado applies a flat corporate income tax rate rather than graduated brackets, which makes reserving through the year simpler than in most states.

Numbers you can actually trust

Zinance is outsourced bookkeeping, tax, and fractional-CFO support built for fast-growing companies, flat pricing, a dedicated human, and books that stay current every day.

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