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Business Service Company

CSI

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

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About CSI

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

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

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What the business tells TrustList

Founded
1966 (60 years) evidence sent

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