Calculators and applications.

Tax Calculator

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VAT Calculator

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Retirement Planner

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Checkbook Balancer

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Taking care of your management accounts.

Payroll and HR resources.

Hourly Paycheck Calculator

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Salary Comparison Tool

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We deliver expertise you can trust.

Experience

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Professional

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Trust Worthy

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We deliver expertise

We bring you the best possible solutions for your business.

Accounting

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Bookkepping

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Tax Services

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Payroll

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On the cutting edge.

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30

Years of experience

4,054

Connections

1200

Clients

89

Countries Served

Blog Insights

Business Insights

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Why Ontech Systems?

Founded in 2004 and located in Menomonee Falls, Wisconsin, Ontech Systems provides comprehensive technical solutions for small and medium-sized businesses throughout Eastern Wisconsin.

  • Serving greater Milwaukee for over 15 years

  • 98% client retention rate

  • Complete transparency & flexible commitment options

  • Local IT support with 24/7 support availability

Let’s Connect

A quick 10-minute call is all it takes to see if we’re a good fit. If we aren’t for whatever reason, we’ll point you in the right direction.