Rock County: CPA, tax and bookkeeping services by community

Services and starting prices.

• 01

  Monthly Accounting

  From $400/mo

  Transaction categorization, account reconciliations, financial statements and regular accounting support.

• 02

  Tax Preparation

  From $300

  Individual returns (federal and one state) from $300; business returns from $750.

• 03

  Accounting + Tax + Planning

  From $900/mo

  Monthly accounting and reporting, business and owner tax returns, proactive tax planning and year-round CPA access.

  Founding Client Rate: $825/month for your first 12 months when you engage by March 31, 2027. Terms

• 04

  Law Firm Accounting

  From $900/mo

  For solo attorneys and small law firms: monthly accounting, financial reporting, business and owner returns, tax planning and CPA consultation.

Starting prices. Your scope and price are agreed in writing before work begins.

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Rock County at a glance

• Part of Janesville-Beloit, WI

  metropolitan statistical area

  Source: U.S. Census Bureau, Vintage 2024 metropolitan and micropolitan statistical area population estimates (OMB July 2023 delineation)

• Borders Illinois

  Boone County, Winnebago County

  Source: U.S. Census Bureau, County Adjacency File 2023

• About 6%

  of workers who live in Rock County work outside Wisconsin

  Source: U.S. Census Bureau, American Community Survey 2023 5-year estimates, table B08007 (place of work: state and county)

Businesses and work in Rock County

• 3,362

  business establishments with paid employees in Rock County

  Source: Census County Business Patterns 2023

• 29

  law offices with paid employees in Rock County

  Source: Census County Business Patterns 2023

• 30

  physician offices with paid employees in Rock County

  Source: Census County Business Patterns 2023

• 126

  real estate firms with paid employees in Rock County

  Source: Census County Business Patterns 2023

• 249

  restaurants with paid employees in Rock County

  Source: Census County Business Patterns 2023

Tax offices in Rock County

• Rock County Treasurer

  County property tax collection.

  51 South Main Street, Janesville, WI 53545

  Phone 608-757-5670

  Official website

• Wisconsin Department of Revenue, Customer Service Bureau

  State tax and revenue agency.

  Phone (608) 266-2776

  Official website

• IRS Taxpayer Assistance Center - Rockford

  Federal tax help in person.

  4920 E State Street, Rockford, IL 61108

  Phone (779) 500-6808

  Official website

Rock County is in Wisconsin, and the Rock County Treasurer collects property tax there. The Wisconsin Department of Revenue, Customer Service Bureau is the state office listed, and the IRS Taxpayer Assistance Center - Rockford is the federal one.

These offices are listed on this page. The county has 3,362 business establishments with paid employees, per Census County Business Patterns 2023.

Brent prepares tax returns and keeps monthly books for business owners in Rock County and adds tax planning through the year.

Source: each office's official website, checked October 16, 2026.

Sources

• U.S. Census Bureau, Vintage 2024 metropolitan and micropolitan statistical area population estimates (OMB July 2023 delineation) (July 1, 2024 estimates; delineation of July 2023; official statistics)
• U.S. Census Bureau, County Adjacency File 2023 (2023; official statistics)
• U.S. Census Bureau, American Community Survey 2023 5-year estimates, table B08007 (place of work: state and county) (2019-2023 5-year estimates; official statistics)
• U.S. Census Bureau, County Business Patterns 2023, county file (establishments with paid employees by industry) (2023; official statistics)