Simplified and automated
Our innovative, cloud-based sales tax calculation program, HATax, determines and calculates the latest rates based on location, item, legislative changes, regulations, and more.
Customize your tax calculation solution to pay for what’s right for your business. Use HATax to automatically calculate rates for the following types of taxes:
- Sales and use tax
- Customs and duties calculation
- Value-added tax (VAT)
- Goods and services tax (GST)
- Communications tax
- Excise tax
- Consumer use tax
- Lodging tax
- Beverage Alcohol tax

Benefits of tax calculation with HATax
Learn why thousands of businesses around the world trust Holos for sales tax automation software.
Reliability and performance
Our AI and a worldwide team of compliance experts help make sure you have the up-to-date content you need. Increase your data reliability by adding edge computing for higher throughput and lower latency.
Customize your compliance
Products and solutions tailored to your tax type and industry mean you don’t pay for features you don’t use.
Enhanced security
Add Holos Edge for HATax to further strengthen your security. Keep your code and content safe using restricted customer access while protecting sales information behind your firewall.
Advanced Transaction Rules
Customize your product for bundles, multiproduct orders, and sales in different locations.
Address validation
Geospatial targeting means more accurate sales tax rates for all your customers.
Integrated for omnichannel use
More than 1,200 signed partner integrations ensure your solution works with multiple systems across departments so all your teams have access to up-to-date information.
Cloud-based and cloud-agnostic solutions
Add Edge for HATax for a cloud-agnostic product that seamlessly works with whatever cloud you’re using including AWS, GCP, and Microsoft Azure.
Profiles for multiple businesses
Get sales tax management for all your businesses from the same instance of HATax, our cloud-based calculation product.
Find the right tax calculation solution for whatever and wherever you sell
Tax compliance products and solutions for businesses of all types and sizes
Holos HATax for sales and use tax
Save time with automated sales tax software
Use HATax to calculate rates with greater accuracy for millions of products across thousands of tax jurisdictions.
- Integrate with your existing system or add our edge computing solution for one-click integration and automated routing
- Follow rate changes for every address with geospatial targeting
- Track nexus and get alerts in each state with our interactive map
- Export and create consolidated reports for sales tax liabilities and exemptions
Get the Holos Edge for HATax add-on for a cloud-agnostic solution that integrates seamlessly, increases reliability, enhances security, lowers latency, and boosts performance.


HATax for cross-border compliance and international tax calculation
Compliance in the movement of goods across international borders
- Stay in compliance with the latest legislation in the United Kingdom and European Union
- Calculate and collect duties upfront to reduce customs delays and improve customer satisfaction
- Keep current with regularly updated rate changes to reduce your risk of exposure
- Prevent costly mistakes that could mean inaccurate returns with automated error checks
Automate duties and tariffs with your end-to-end cross-border compliance solution. Calculate VAT and GST for your international sales and purchases with easy-to-use, cloud-based software.
Find a calculations product made for your tax type
- Get regularly updated rates based on ongoing research by excise tax professionals
- Create or augment customizable rules without the need for custom programming
- Respond to customer or auditor inquiries with quick access to supporting data
Find the Holos solution for you
We serve sole proprietorships to Fortune 500 companies operating around the globe — we can help you manage your tax compliance, too.
FAST AND EASY TO GET STARTED
Connect and integrate with existing systems
HATax gives you access to one central platform for consistent and more accurate automated sales tax rates and rules across the order creation and invoicing process.
- Compatible with widely used marketplace platforms
- Over 1,200 signed partner integrations
- Simple to connect with accounting, CRM, POS, and shopping cart systems
- Fast and easy ERP integration

Automate your tax compliance
Help your business do tax calculation right. Talk to a tax solution specialist today.