Top 5 Best Corporate Tax Software for International Businesses

Managing tax compliance across multiple jurisdictions is a complex challenge for international businesses. Global companies must constantly adapt to evolving cross-border tax regulations, ensure ongoing compliance, and meet strict tax filing deadlines in every country where they operate. This is where corporate tax software comes in.

In this article, we’ll explore some of the best corporate tax software for international businesses. We’ll also highlight Wise Business, a global payment processing platform that integrates with major corporate tax software and makes receiving and sending international payments seamless.

💡 Learn more about Wise Business

Corporate tax software - what it is and how does it work?

Corporate tax software helps businesses in the UK streamline their tax filings and compliance processes. Using corporate tax software not only saves time but also reduces the risk of errors when filing your taxes.

A corporate tax solution is an efficient tool that helps you:

• Prepare tax returns on time
• Efficiently manage tax deduction
• Monitor deadlines to minimise the risks of late filings or non-compliance risks
• Generate accurate reports for auditing purposes
• Integrate with other financial systems.

On the other hand, manually filing your documents is labor intensive and prone to errors. These errors can lead to incorrect tax filings, increasing the risk of non-compliance and potential fines. For an international company, manually tracking different tax regulations in multiple countries and ensuring compliance is almost impossible.

Here’s a quick rundown of some of the tools we’ll review in this article:

• Avalara Europe
• Fonoa
• Sage
• Xero
• Onesource

Best corporate tax software: overview

Before we dive into a comprehensive review, here’s an overview of some of the best corporate tax software in the market for international organisations:

Provider	Trustpilot score	Monthly fees	Best known for
Avalara Europe	3.5 of 5.0 from 400+ user reviews¹	Not listed	Suitable for businesses of all sizes
Fonoa	No Trustpilot page	Not listed	Providing real-time updates on global tax laws
Sage	4.0 of 5.0 from 19000+ user reviews²	£95 - £245³	AI-powered productivity assistant
Xero	4.0 of 5.0 from 9000+ user reviews⁴	£16- £65⁵	Ideal for small businesses and sole traders.
Onesource	1.8 of 5.0 from just 15 user reviews⁶	Not listed	Suitable for tax, trade, and financial reporting professionals.

Comparing corporate tax software: criteria

In this article, we compared some of the best corporate tax software for international organizations. Here are some of the criteria we used in our review:

• Features and services
• Fees/cost
• Integrations with third-party providers

After reading this review, you should have all the information you need to choose the corporate tax software that best fits your company’s needs.

Avalara Europe

Avalara Europe is a cloud-based solution that helps organizations manage sales tax returns and reporting. Avalara was originally a provider of digital sales tax compliance solutions in the U.S, but today, it offers its services in the UK and many other countries.

This tax compliance solution enables businesses of any size to streamline their processes by automating manual tasks, minimising errors, improving compliance, and ultimately saving both time and money.

Avalara Europe has an average rating of 3.5 out of 5.0 on Trustpilot from 400+ user reviews¹.

Here are some of the core features that Avalara offers:

• Calculate sales and use tax, VAT, GST, customs duties, and import taxes
• Get real-time updates on tax rates, compliance requirements, and mandatory e-invoicing
• End-to-end compliance with global tax regulations
• Scalable solution for growing businesses
• Purpose-built for ERPs, ecommerce, point-of-sale, marketplace, and other financial systems
• Leverage Import One-Stop Shop (IOSS) for easier EU business transactions

Avalara doesn’t explicitly state its prices on its website. However, the company website states that it offers volume-based pricing, which is determined by the number of integrated apps, monthly sales transactions, and the products and services purchased.

Avalara also offers licensing fees for selected products. For instance, Avalara offers License Guidance for as low as $119 and Avalara Sales Tax Registration for $403 per location⁷.

When it comes to third-party integrations, the platform integrates with Shopify, Stripe, Amazon, WooCommerce, BigCommerce, Salesforce, Etsy, and Oracle.

Fonoa

Fonoa is a comprehensive tax compliance stack for modern businesses. It’s built specifically for marketplaces, SaaS companies, and digital-first businesses.

This corporate tax software is equipped with Tax Intelligence 2.0. This AI-powered tax intelligence helps businesses stay up-to-date with changing tax requirements by extracting tax content from government websites, newsletters, and numerous publications.

Some popular features and services from Fonoa include:

• Reliable tax calculations in 190+ countries
• Tax management and validation in 100+ countries
• Real-time tax reporting and e-invoicing
• Full data privacy and airtight compliance
• Error-free VAT and GST returns
• TIN Validations in the UK and other countries worldwide

Fonoa doesn’t publicly display its fees on its website, so you’ll need to reach out to the Fonoa team to get more information about its pricing options.

Sage

Sage positions itself as the market leader for integrated accounting, payroll, and payment systems for ambitious entrepreneurs. It automates tax preparations and filings for businesses of all sizes. It is an ideal corporate tax solution for calculating tax deductions and tax returns before deadlines.

Sage has an excellent rating of 4.1 out of 5 on Trustpilot, based on 18,000+ user reviews².

Some popular features and services from Sage include:

• Built-in collaboration with HMRC
• Compliance with the latest tax regulations
• Designed for data security
• On-demand, detailed and summary reports
• Calculate VAT costs and track each transaction
• Provides secure information security management

Sage integrates with third-party ERP, payroll, invoicing and CRM tools.

Xero Tax

Xero Tax was launched in 2006 and now has 4.4 million subscribers. It ensures businesses stay compliant with timely preparation and accurately report corporate taxes. The platform is best suited for solo entrepreneurs and enterprises looking for seamless corporate tax solutions.

Xero Tax has an impressive 4.0 out of 5.0 on Trustpilot from 9,000+ reviews⁴.

Some popular features and services from Xero include:

• Data flows between accounts, books, and tax returns
• Submits tax returns to HMRC
• Accounting production for businesses
• Simplify the compliance process

Xero pricing ranges between £16 to £59 per month⁵.

Xero integrates with a wide range of invoicing, payroll, and CRM software, and it also connects with Wise Business accounts.

Onesource

Onesource provides the clarity and visibility needed to navigate the complexity of corporate taxes. Businesses can easily report and comply with Onesource’s tax automation.

Thomson Reuters, the parent company of Onesource, has a rating of 1.8 out of 5.0 on Trustpilot, based on reviews from just 14 users⁶.

Some popular features and services from Onesource include:

• Up-to-date with changing tax regulatory requirements
• Automates workflow and tracks filing deadlines
• Ease of use interface
• Accurate tax calculations
• End-to-end tax and trade lifecycle coverage
• Dedicated customer service

Onesource does not provide pricing information on its website, so you’ll need to contact their team for details about pricing options.

In terms of integrations, Onesource is compatible with over 200 in-house technology solutions.

How to choose the right corporate tax software

When choosing corporate tax software for your business, there are different factors to consider that will help you make the right choice.

This section will highlight some of the major ones:

• Your business needs: Start by considering the size of your organization, its structure, and the complexity of your tax returns. A company with straightforward tax returns might only need basic software to prepare and file a standard CT600 return. However, this type of tax software may not be a great fit if your company has multiple overseas entities. Companies in this category require more complex corporate software that can handle foreign tax credit calculations, transfer pricing, and VAT across multiple jurisdictions. Therefore, it’s crucial to select a solution that can keep pace with evolving tax regulations in real-time and manage tax filings for each country or region in which your organization operates.

• Ease of use: Look for software with a simple, intuitive interface that your team can pick up quickly. Clunky or glitchy software can be frustrating, slow down your workflow, and even lead to mistakes. On the other hand, working with easy-to-use corporate tax software means less time and money spent on training, support, and troubleshooting. When your team can use the system confidently, you’re less likely to face delays or errors that could result in late filings or penalties.

• Total cost of ownership: Consider the total cost of ownership. While most providers list their basic fees on their websites, be aware that additional costs may apply for extra users, advanced features, support, or updates. Make sure you understand the full pricing structure before committing, so there are no surprises down the line.

• Integration: Your corporate tax software should also integrate smoothly with your existing accounting software and ERP platforms. This makes it easy to import financial data to your tax software and in turn, saves you the time and effort required to enter this data manually.

Take the complexity out of international expansion with Wise Business

Researching corporate tax software is a crucial step when managing your tax obligations locally or internationally. And if your business is expanding overseas the next step is setting up the financial infrastructure to handle the complexities of operating across borders, from managing multi-currency cash flow to mitigating FX risk.

The Wise Business account provides the financial tools to make your international expansion to Ireland efficient and simple. It's the one account for managing your money globally.

With a Wise Business account, you can:

• Pay suppliers and initial fees: Pay suppliers, global payroll, and one-off incorporation costs in the local currency.
• Get paid like a local: Use local account details for 8+ major currencies to easily receive payments from customers or investors.
• Manage your money across borders: Hold and exchange 40+ currencies in one account, always with the mid-market exchange rate and low, transparent fees.
• Streamline your accounting: Integrate with tools like Xero or QuickBooks to simplify tracking your company's international finances.
• Empower your team: Provide multi-user access for your finance team and issue expense cards for international spending.

Wise is designed to support every step of your journey, from paying your first registration fee to receiving international payments and managing your global treasury.

Get started with Wise Business 🚀

FAQs - corporate tax software

Here are some of the frequently asked questions about how to choose a corporate tax software program:

What features should I look for in corporate tax software?

If you are choosing corporate tax software for your company, here are some of the core features you should look out for:

• User interface: Your tax software must be easy to use, making tax returns easier for your team. It should not be clunky or overly complex.
• Security and access controls: Ensure your corporate tax software supports end-to-end data encryption to protect your company’s sensitive financial data. Additionally, ensure it supports role-based access to control who can access and edit information.
• Robust reporting and analytics: Ensure your tax software can generate detailed tax reports, summaries, and analytics in different formats. This is useful not only for ensuring tax compliance but also for analysis and making accurate tax projections.
• Support and training: Your vendor should provide access to responsive customer support via phone, live chat, or email. Additionally, they should offer learning materials and guides to facilitate onboarding and troubleshooting technical issues.
• Collaborative features: It should enable tax managers, accountants, and finance directors to communicate and collaborate effectively when preparing tax returns. The software must also be able to keep an audit trail to know when, who, and what changes were made.
• Document storage and management: With your tax software, you should be able to store financial documents and paperwork securely and attach the important ones to your tax returns.

How does corporate tax software integrate with existing accounting systems?

A corporate tax software program that supports third-party integrations would allow you to link with major accounting and ERP systems, making it easy to import financial data directly into your tax software.

This is usually accomplished through APIs (Application Programming Interfaces), which enable secure and seamless data exchange between different software platforms. As a result, any updates made in your accounting or ERP system are automatically reflected in your tax software.

Can corporate tax software handle international tax obligations?

Yes, some corporate tax software can manage international tax obligations. However, it’s crucial to choose a solution specifically designed for global companies to ensure effective tax compliance across multiple countries.

How often is corporate tax software updated to reflect new tax laws?

Most UK corporate tax software vendors update their solutions frequently to reflect new tax laws and rules. These updates can either be in real time or as soon as HMRC makes new tax regulations.

Typically, HMRC communicates upcoming changes in advance, enabling software vendors to align their products promptly with these requirements. They “collaborate with software providers to embed tax and customs rules into their products, allowing for automated information and data sharing with HMRC.”⁸

What is the implementation process for corporate tax software?

Here’s a detailed process to deploy your corporate tax software

• Choose an HMRC recognised software that’s MTD compliant.
• Maintain up-to-date digital records.
• Import financial data into the software.
• Configure the software to fit your company’s compliance needs and test it.
• Train your staff to use the tool.
• Update the tool regularly
• Submit tax reports to HMRC on time.

Source used in this article:

1. Trustpilot - Avalara
2. Trustpilot - Sage
3. Sage - Pricing
4. Trustpilot - Xero
5. Xero - Pricing
6. Trustpilot - Thomson Reuters
7. Avalara - Pricing
8. Gov.UK - HMRC Transformation Roadmap

Sources last checked 11/09/2025