Skip to content by CCH, formerly CorpSystem Sales Tax Online, is the world class, cloud-based Sales Tax & Rules Engine which makes all your sales tax calculations in real time. by CCH easily integrates into your existing accounting software or ERP using the available Software Development Kit, or can be added directly into your Microsoft Dynamics AX or GP ERP system for even more complete synchrony. by CCH is your ticket to worry free financials, the plus and pro versions even come with automatic form generation, and since it’s based off of the same cutting edge tax technology CCH, the largest tax research and solution firm in the world, supplies to the IRS and all BIG-4 accounting firms, compliance is guaranteed.

Customer Testimonial

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A testimonial and review by Susan Reynolds of Rand McNally on the Sales Tax Office implementation and customer service by Hara Partners.

In the News

Magento Sales Tax Module Fully Automated


The Magento Sales Tax Module has been fully automated. Get the module through Magento Connect and take advantage of the 

The Marketplace Fairness Act – Sales Tax for Magento


In the wake of the Senate’s 69-27 vote in favor of the Marketplace Fairness Act of 2013, (the new internet sales tax law) and the impending vote in Congress, the outcome of which determines whether the bill becomes enacted into law, 

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Learn more about the Magento module.