How to Choose a Bookkeeper in Colorado (2026)

Choosing a bookkeeper in Colorado comes down to three checks you can do in an afternoon: the firm's registration, any CPA license it claims, and a written fee with a close date. The third is the one most Colorado firms leave to a call, since only 12 of the 135 we list put a price on their sites.

What a Colorado bookkeeper keeps track of

A Colorado bookkeeper keeps the records behind the filings below. Which of them reach your business turns on your entity, your sales, your payroll and the schedule each agency sets, so read this as general information rather than tax advice.

• Sales tax. Colorado bases your sales tax filing frequency on tax collected per month: annual at $50 or less (due January 20), quarterly under $1,100, monthly at $1,100 or more. Quarterly and monthly returns are due the 20th of the month after the period. You file every period, even with no sales. Source: Colorado Department of Revenue, checked September 26, 2026.
• Wage withholding. Colorado ties your withholding schedule to a year's total: under $7,000 files quarterly by the last day of the month after the quarter, $7,000 to $50,000 monthly by the 15th, and over $50,000 weekly. The Department reviews each account yearly using a July through June look-back period. Source: Colorado Department of Revenue, checked September 26, 2026.
• Unemployment premiums and wage reports. Colorado employers pay UI premiums through quarterly premium and wage reports to the Department of Labor and Employment. Wage detail, monthly employment data and premiums are due the last day of the month after each quarter ends. Source: Colorado Department of Labor and Employment, checked September 26, 2026.
• Periodic report. LLCs, corporations, nonprofits and foreign entities file a Periodic Report with the Secretary of State each year, online only. Your reporting month is on the entity's summary page, and you can file up to two months before or after it without penalty. Source: Colorado Secretary of State, checked September 26, 2026.

How to check a Colorado firm yourself

The Colorado State Board of Accountancy lookup settles any CPA claim in a minute. The Colorado business entity search shows whether the firm's legal entity exists and its status. A sole proprietor may not appear, which isn't a warning sign on its own. Colorado publishes these records as open data, so our lists already carry the checks: we matched an active CPA license or permit for 10 firms and a registration for 82 of the 135 Colorado firms we list. Matched CPA records include Richard M. Hollenstine CPA, Hewitt, Heerschap & Couch, PC, Scott Porter, CPA, Matthew P. Schlanger CPA and Lay & Company, LLC.

What Colorado firms put in writing

106 of the 135 firms we list in Colorado say nothing about fees on their websites, and 12 publish a monthly price or a starting price, 9% against 4% nationally. 45 of 135 say how often reports arrive (33%, against 24% nationally), 27 describe onboarding and 10 offer catch-up or cleanup work. The software Colorado firms name most is QuickBooks (34%).

Where to start in Colorado

• Metro pages: Denver-Aurora (82 firms, ranked), Fort Collins-Loveland (13 firms, ranked), Colorado Springs (12 firms, ranked), Boulder (10 firms, ranked) and Greeley (8 firms, compared).
• Firms that publish a monthly price or a starting price: Left Hand Accounting, Team 80, RedGate Accounting & Bookkeeping, ReliAscent LLC, Tailored Tax and Wealth, Sound Advice Bookkeeping Services and 6 others.
• Firms that say they take on catch-up work: Flatiron Advisors Tax & Accounting, Centennial Accounting Group, Accounting Prose, DK/RK Services, Kellcat, Mergix Accounting & Tax and 4 others.
• Highest Evidence Scores in the state: Matthew P. Schlanger CPA (78), Centennial Accounting Group (77) and Team 80 (73).

Questions for the first call

• What is the monthly fee, how many transactions does it assume, and what costs extra?
• On what day of the month will my books be closed, and what report do I get?
• Does the fee include preparing the sales tax filing, or only the records behind it?
• How do you keep the records for wage withholding ready before each due date?
• Can you clean up past months first, and what does that cost?
• If we stop working together, do I keep the accounting file and its history?