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Approved Third Party Software Vendors for Sales and Use Tax

If you choose to have a third party file your return, the following are vendors who are approved by the department to electronically file sales and use tax returns:

Note: Software vendors will be approved after they register and have their product approved through testing. These companies may be web-based companies or traditional software development companies who produce a product that formats and transmits electronic returns.

  • CCH, a Wolters Kluwer Business– 1-866-513-CORP (1-866-513-2677) ( http://www.salestax.com)
    • CorpSystem® Sales Tax Returns Online
    • SaaS-based, internet product, accessible from anywhere on the internet
    • 500+ state and local sales and use tax returns, including electronic filing option
    • Automated form population and return processing from any flat, delimited data files
    • Returns calculate tax due automatically--fully editable, allows for overrides
    • Audit reports extract to Excel spreadsheets for manipulation and sharing of data
  • efileSalesTax.com– 1-877-584-2309 ( http://www.efilesalestax.com)
    • Fast, easy and compliant system for filing Illinois Sales & Use Tax returns
    • Automatic calculations and validations per DOR requirements
    • QuickBooks Import option
    • Option to import ST-2 data from a text file
    • Email and Text Reminders
    • PDF output option
    • No software to purchase or install, automatic rate updates
    • Free unlimited technical support
    • Free archiving, viewing and printing of completed returns
  • Intuit, Inc.– 1-800-317-6244 ( http://www.intuit.com/)
    • Provides a fully automated sales tax solution for nearly all financial accounting software packages, online shopping carts, and custom integrations
    • Calculates sales taxes in all countries and states accurate to the exact street level address
    • Files tax returns and remits tax payments to every state and local taxing jurisdiction
    • Provides a robust reporting system for tracking / auditing
    • Requires absolutely no maintenance – all tax rates / forms are updated automatically as changes occur
    • Certified as a Streamlined Sales Tax (SST) sales tax service provider 
    • No cost for setup or support
    • E-mail: US-SalesTax@Intuit.com
  • Instant Software Solutions– 1-800-963-1212 Sail TaxTM for Windows ( http://InstantSoftwareSolutions.com)
    • Designed for accountants to be the fastest, easiest preparation available
    • Electronically file ST-1, ST-2, and PST-2’s
    • Special simplified entry for calculation of Food/Drugs, Gas Stations, Prescriptions, Service persons, Chicago Soft Drink (ST-14), MPEA (ST-4), and Tire User Fee (ST-8).  Once a “Special” is selected for a client, Sail Tax will remember to prompt you for it next time
    • Prepare past due/very past due returns 10+ years back using the current version of the software.  You pick the liability period and Sail Tax will provide the correct rate
    • Print transmittal letters to clients
    • Can run on multiple computers and share data on a server
  • PTP Oneclick, LLC– 1-847-459-5189 PAVLOU SalesTaxPRO ( http://www.salestaxpro.com)
    • PAVLOU SalesTaxPRO® is the only software that manages BOTH State and ALL Local sales and use taxes across Illinois.  It offers right-sized software, providing independent store owners, major corporations, and every size company in-between with sales and use tax software tailored to their industry, the number of businesses, number of locations, and more. It  even offers a special package specifically designed for the tax professionals who serve those companies.
    • Windows-based software application – Powered by SMART TAX TECHNOLOGY - Offers Complete Electronic Filing and Payment of All Sales and Use Tax Returns (ST-1, ST-2, ST-4, ST-8, ST-14, and PST-2.
    • Fully Automated and Integrated Tax System that is transforming the preparation, filing and payment of State & Local sales taxation for All Business taxpayers.  Easy to use data entry Tax Wizard – Smart  Wizard and Smart Rate/Form Technologies automatically calculate and prepare state and local tax returns.  It streamlines and enhances tax preparation and compliance in just a few minutes.
    • Easy to use Tax Wizard – Smart  Wizard and Smart Rate/Form Technologies automatically calculate and prepare state and local tax returns
    • Built in logic optimizes all Home Rule/Motor Fuel Tax Deductions, Specific Fuel Tax Exemptions and Generates for Filing All CMFT-1's and CMFT-2's. Great tax compliance solution for Gasoline Stations.
    • Offers flexible tax payment options in all software products, including E-File Activity and Payment monitoring reports
    • Free update downloads through the Twelve Month Licensing Period, keeping you current and compliant.
    • E-mail:  contact@ptponeclick.com
  • Sovos Compliance– 1-866-890-3970 ( http://sovos.com)
    • 200 Ballardvale St., Wilmington, MA 01887
    • E-mail: info@sovos.com
  • TaxJar – 1-855-800-6681 ( https://www.taxjar.com)
    • #1 in sales tax for eCommerce businesses & merchants
    • Simplifying Sales Tax Filing for eCommerce sellers (including tax payment)
    • Automated sales tax filing & monthly due date reminders
    • Trusted by thousands of customers every month
    • Free 30 day trial anytime, no credit card required
    • No contracts. No activation fees. Easy monthly pricing. Cancel anytime
    • Direct connections to eCommerce providers for importing data (Amazon, Shopify, eBay, Magento, Square, PayPal, Stripe, Etsy & more)
    • Instant sales tax calculations with SmartCalcs, a modern sales tax API
    • World-class support and technical assistance
  • TTA - A Thomson Company– 1-800-865-5257 ( http://ria.thomson.com)
    • InSource Sales and Use Tax
    • Windows-based software application - Available via CD ROM or internet download file
    • Generates 560+ state, local and Canadian returns including electronic returns for Illinois and 18 other states
    • Flexible data sourcing including ASCII file and electronic spreadsheet import
    • Automatic tax calculations using the latest rates
    • Offers standard and customized audit reports
  • Trustfile– 1-877-222-0187 ( http://www.trustfile.com)
    • 1100 2nd Ave Suite 300, Seattle, WA 98101
    • Windows-based software application -Complete Electronic Sales and Use Tax Returns
    • Generates electronic returns for Illinois, Wisconsin, and 8 other states
    • Automated form population and importing from spreadsheets
    • Automatic tax calculations
    • E-payment and payment warehousing capabilities
    • Free update downloads through December
    • E-mail: Sales@trustfile.com

For questions regarding this program, please contact the Electronic Commerce Division at 1-866-440-8680.

Note : Some taxpayers are required to pay their tax electronically using Electronic Funds Transfer.