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Sales Tax Calculation Software That Keeps Your Business Moving

Your business doesn't stop after the sale, and neither does sales tax compliance. TaxConnex combines enterprise sales tax calculation software with managed compliance services to help you calculate tax accurately, streamline filing and remittance, respond to changing requirements, and scale confidently as your business grows.

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The Sales Tax Software Solution You've Been Dreaming Of

Accurate sales tax calculation is about more than tax rates. Every transaction requires decisions, from determining the core tax based on product taxability, customer exemptions, sourcing rules, and the unique requirements of thousands of state and local taxing jurisdictions.

We believe we have the software you've been looking for, but we'll meet you where you are. TaxConnex helps you evaluate the right technology for your business and supports compliance at every step. 
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Jurisdiction Level Precision

Precise tax calculations and support for complex jurisdictional taxes, telecom levies, and utility surcharges.  

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Built to Scale

Scale confidently with millions of API calls and no latency or reconciliation bottlenecks. Businesses that start with sales tax software for small business may outgrow it, and this platform is built to scale with them.

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Audit Ready Records

 Consistent calculations, clean reporting, and complete data. Transparency at its finest.  

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Clear Pricing

Know exactly what you're paying for with clear, transparent pricing and no hidden fees or surprise charges. 

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Expertise & Oversight

Pair your sales tax calculation software with TaxConnex's managed compliance services for expert oversight from calculation through filing. We prepare and file your returns, so you don't have to.

Let's Find the Right Sales Tax Solution for Your Business

Searching for sales tax software for small business? We'll help you decide whether software alone is enough or whether managed compliance support is the better fit. Whether you're implementing tax calculation software, replacing an existing provider, or looking for managed compliance support, we'll help you build a solution that fits your business today and scales for tomorrow!

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Work Within Your Existing Tech Stack

Integrations with leading ERP, ecommerce, CRM and billing platforms so accurate tax calculation becomes part of your existing workflows. Online sellers can add ecommerce tax software to the same workflow without replacing the systems they already use.

Ceretax integrations for taxC page (1)

 

Sales Tax Calculation Alone Doesn't Ensure Compliance

Modern businesses operate across dozens of states, multiple ERP systems, ecommerce platforms, and changing tax rules. While tax calculation software determines the correct tax at the point of sale, it doesn't resolve filing requirements, notices, changing nexus obligations, validating exemption certificates, or ongoing compliance management.  

TaxConnex fills that gap. 

Combine  sales tax calculation software with managed filing and remittance for: 

  • An End-to-End Compliance Process

  • Automation + Human Oversight 

  • Sales, Use, and Telecom Tax Consulting Options

  • Jurisdictional Correspondence 

  • Data Flexibility & Custom Reporting

What Our Clients Say About TaxConnex

The uniqueness is the fact that TaxConnex is a one stop shop. I’ve been in touch with several other providers, all of whom offer a suite of services at far more expensive rates and with different people for each issue I have. With TaxConnex, I have one person who’s responsible for everything I need.”
I would highly recommend TaxConnex to any size company, small or large. TaxConnex provides personalized services for a good cost value.
I look to TaxConnex as an extension of our accounting team; I want them to succeed like want our own company and team to succeed

Our business was growing more complex as it related to sales and use tax and I knew TaxConnex would be able to handle our multiple entities. The service we've received has been responsive, timely and engaging." 

force-of-nature-1-1 profisee logo-1 WorthPoint_Logo_NewTagline-1 ideal_living_logo
Mark Kost, CFO - Force of Nature Clean
Dinah McQueen, Corporate Controller - Profisee
Neal McAtee, CFO - WorthPoint
Lina Pinskaya, Controller - Ideal Living
 

Tax Calculation Software FAQs

  • What industries is the software built for?

    Our intelligent tax engine is built to handle the complexity of multiple industries all in one platform. We typically work with businesses in the communications, SaaS, manufacturing, retail, and digital goods industries. We also work with accounting firms and their clients, so if you're evaluating sales tax software for accountants, our team can walk you through how the platform fits.

  • Which ERPs, billing, or eCommerce platforms are supported?

    Our sales tax software connects to the systems your team lives in, including billing, accounting, ecommerce, and more. For sellers who need ecommerce tax software, that includes storefront platforms such as BigCommerce, nopCommerce, and WooCommerce.

    Some of our integrations include:
    Oracle NetSuite, Microsoft Dynamics 365 Business Central, Microsoft Dynamics 365 F+O, Intuit QuickBooks, Salesforce, BigCommerce, nopCommerce, WooCommerce, Amdocs, rev.io, Datagate, Sandy Beaches, APIC, BluLogix, and more...

  • What makes this software different/better than the competition?

    taxC, powered by CereTax, is built to deliver accuracy, flexibility, reliability, and support where other solutions fall short. Accounting firms weighing sales tax software for accountants can hold it to the same standard: accuracy, flexibility, reliability, and support.

    • Real-time accuracy: Sub-second tax decisions with line-item precision, even at high volumes.
    • Flexible rules engine: Configurable by product, service, location, or channel, and built to handle edge cases.
    • Geolocation precision: Rooftop-level mapping ensures the correct jurisdiction every time.
    • Transparent reporting: Line-level audit trails and dashboards for nexus, exposure, and liability.
    • Seamless integrations: Pre-built connectors and API options that scale with your systems.
    • Future-proof platform: Supports multi-entity, multi-channel, and multi-currency setups with continuous updates.
    • Reliable support: Dedicated account managers and responsive U.S.-based tax experts.

  • Why does the software use latitude and longitude instead of Zip code or Zip+4?

    ZIP codes and even ZIP+4 areas were created for mail delivery, not tax compliance. Tax jurisdictions often cut across ZIP code boundaries, which means relying on them can lead to inaccurate tax calculations. By using latitude and longitude, our proprietary GIS method pinpoints the exact location of the transaction, even in remote areas, ensuring the correct tax rate is applied.