Skip to content
TrustList
CSI logo
Business Service Company

CSI

Monthly accounting, payroll and tax service for small businesses nationwide, based in Minneapolis

CSI cover

About CSI

Monthly accounting, payroll and tax work for small firms

CSI is headquartered in Minneapolis and serves small businesses across the United States. Its offer spans regular accounting, outsourced payroll, day-to-day bookkeeping, advisory work and tax services. The firm presents itself as a financial partner, with clear reporting, proactive advice and reliable support as the core of what it provides, and it says it is trusted by thousands of small businesses.

Proactive tax planning across the year

According to the firm, a monthly accounting service keeps expenses tracked throughout the year, so a business is not scrambling for documents when tax time arrives. The same monthly relationship helps identify deductions a business qualifies for and supports tax strategy, which the firm treats as a central part of small business accounting. Because the accounting firm is a single point of contact, the firm argues there are fewer chances for miscommunication between separate providers and fewer costly mistakes.

Accurate records and back work

The firm argues that inaccurate or late bookkeeping costs more than the records themselves, because it can lead to penalties and a long catch-up. Its approach starts by checking that records are accurate and current, performing any back work needed, including back taxes, and then keeping the books that way. It recommends a regular rhythm of daily, weekly, monthly, quarterly and annual accounting tasks, and presents outsourcing as the answer for owners who cannot keep up with them while running the business.

Payroll handled by specialists

Payroll is presented as something that looks simple until it is not. The firm says specialists can help avoid penalties for late filings and payroll back taxes, obtain available tax credits, and make sure payroll taxes are not overpaid. Bundling payroll with accounting and bookkeeping, it says, reduces the number of vendors a business has to manage and keeps costs down. Its payroll software is described as giving better reporting and access to reports, and as cutting processing time.

Local knowledge with national reach

CSI says it works with small businesses throughout the country but offers a local touch. It argues that local providers understand local tax rules and the business climate, which affects how a business is treated. It describes its approach as combining that understanding with software that many small firms could not afford alone.

Quiz, free consultation and fit

The firm invites visitors to take an accounting solution quiz to see whether monthly accounting suits them, and it says that monthly accounting is not the best answer for every business. It also offers a free consultation and a downloadable accounting kit. Its site describes the problems a poor partnership can cause, such as unclear information that leads to critical errors, falling behind while competitors move ahead, and compliance and service problems.

TrustList summary

CSI is an accounting and payroll service based in Minneapolis that serves small businesses nationwide. It says it has helped small business owners outsource their accounting for 60 years. The firm offers monthly accounting, payroll, bookkeeping, consulting and tax services.

What CSI does

  • Monthly accounting: ongoing accounting with clear reporting and regular advice.
  • Payroll: outsourced payroll for small businesses.
  • Bookkeeping: day-to-day bookkeeping kept up to date through the year.
  • Tax services: year-round expense tracking and help identifying deductions.
  • Consulting: financial advice that sits alongside the accounting work.

Customers and markets

Small businesses across the United States that want to outsource accounting and payroll rather than handle them in-house.

Key facts

  • Based in: Minneapolis
  • Experience: 60 years serving small businesses

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

CSI rankings

CSI is ranked on 7 TrustList rankings: #1 on 1, #11 on 1, #14 on 1, #19 on 2, #25 on 1 and #27 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. CSI has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Business service company · 7 rankings

  • #1of 11
    Minneapolis

    It is the only one of the 11 here listing books and outsourcing.

    Its profile: “CSI is headquartered in Minneapolis and serves small businesses across the United States.”

    Of the 11 here, 2 also cover simple and 2 also cover responsive; 2 also work in Reading and 2 also work in Minnesota.

    Behind Dos Goats Plans, ahead of Hollstadt Consulting.

  • #11of 33
    Books

    It is one of 5 here listing simple and one of 7 here listing insurance.

    Its profile: “Its approach starts by checking that records are accurate and current, performing any back work needed, including back taxes, and then keeping the books that way.”

    Of the 33 here, 43 also cover accounting and 37 also cover tax; 4 also work in Dubai and 3 also work in New York.

    Behind Cain & Beer, ahead of CustomOne CFO & Controllers.

  • #14of 28
    Simple

    It is one of 8 here listing reporting and one of 21 here listing accounting.

    Its profile: “Payroll is presented as something that looks simple until it is not.”

    Of the 28 here, 8 also cover video and 8 also cover legal; 3 also work in York and 2 also work in United States.

    Behind CRC Salomon, ahead of Davis, Davis & Associates.

  • #19of 345
    Tax

    It is one of 3 here listing books and one of 4 here listing outsourcing.

    Its profile: “Its offer spans regular accounting, outsourced payroll, day-to-day bookkeeping, advisory work and tax services.”

    Of the top 72 here, 10 also cover reporting and 9 also cover security; 4 also work in Texas and 3 also work in Ohio.

    Behind Brady Ware & Company, ahead of Dallas Payroll.

  • #19of 342
    Accounting

    It is one of 51 here listing tax.

    Its profile: “Its offer spans regular accounting, outsourced payroll, day-to-day bookkeeping, advisory work and tax services.”

    Of the top 73 here, 10 also cover government and 8 also cover non profit; 3 also work in Washington and 3 also work in Michigan.

    Behind Brady Ware & Company, ahead of Brock, Schechter & Polakoff.

  • #25of 905
    United states

    It is one of 4 here listing books and one of 5 here listing reporting.

    Its profile: “CSI is headquartered in Minneapolis and serves small businesses across the United States.”

    Of the top 92 here, 16 also cover medical and 12 also cover outsourcing; 5 also work in Florida.

    Behind Entertainment Unlimited.

  • #27of 73
    Reporting

    It is one of 8 here listing books and one of 10 here listing insurance.

    Its profile: “The firm presents itself as a financial partner, with clear reporting, proactive advice and reliable support as the core of what it provides, and it says it is trusted by thousands of small businesses.”

    Of the 73 here, 10 also cover insurance; 3 also work in London and 3 also work in California.

    Behind Crowley & Company, ahead of D&V Phillipines.

As of 2026-11-14. Organic ranks only; sponsored placements are never ranks. How TrustList ranks

What the business tells TrustList

Founded
1966 (60 years) evidence sent

Request a demo or quote from CSI

Protected by reCAPTCHA - Google Privacy Policy and Terms apply.

By sending, you agree we may share your request and contact details with the provider once you confirm your email.

Reviews

Write the first review of CSI

Used it? Your experience helps other buyers decide.

Write a review

Questions & answers

No questions yet. Be the first to ask about CSI.

CSI alternatives

Similar listings buyers compare against this one.

Accounting and bookkeeping firm in Colorado for small businesses, from monthly books to payroll and tax setup

Online bookkeeping, tax and advisory practice led by an IRS enrolled agent for small businesses

Bookkeeping, payroll, tax preparation and notary services for small businesses and individuals in El Paso

National accounting, tax and advisory firm serving nonprofits, private equity and media clients

Singapore invoice finance marketplace giving businesses fast working capital against unpaid invoices and contracts

Court reporting provider for over 40 years, now part of Veritext, serving legal proceedings across North America

IT services holding company behind a US technology talent firm and a natural gas trading software business

UK technology partner reselling hardware and providing cloud, managed IT, telephony and data services