the saas founder’s guide to EU vat 

Scaling a SaaS business without a structured VAT (value-added tax) approach creates compliance risks. Many see VAT as a technical detail that can be handled later. In reality, it is a central element of international operations. 

This article is by Aleksandar Delic, the Indirect Tax Manager at 1stopVAT, a tax compliance service provider in the e-⁠Residency Marketplace. They specialise in Value-Added Tax (VAT), Goods and Services Tax (GST), and sales tax compliance for businesses worldwide. 1stopVAT's main focus is the tax challenges that e-commerce vendors and digital service providers face when operating cross-border.

SaaS businesses can expand quickly worldwide thanks to rapid scaling with lower investment. Deciding when to scale is often a question of product-market fit, pricing strategy, or access to capital.

One of the first problems that scaling SaaS founders with clients in different countries face is tax liability. VAT often applies sooner than expected and is complex. It can affect pricing, margins, and operational scalability.

In this guide, you’ll find examples of the VAT challenges SaaS businesses face when expanding the access of their product to customers across the globe and the solution to these problems.

How VAT works for SaaS

Customer location determines VAT rules

A note for startup founders whose businesses are established outside the EU’s Single Market:  each Member State can have different VAT rules for digital service providers. The rules are mainly based on thresholds, VAT rates, place-of-supply rules, and reporting routes. 

A SaaS subscription sold to a customer in Germany is subject to German VAT. The same subscription sold to a customer in France or Hungary is subject to different VAT. These differences can affect pricing strategies and net revenue, which is why a SaaS billing system must automatically calculate the correct VAT.

How VAT applies for B2C vs B2B SaaS

In B2C transactions, VAT is charged based on the customer’s location. Businesses have to identify and prove the customer's location.

In B2B transactions, the seller does not charge VAT if the customer is a taxable person –  a VAT-registered business. But for it to be a B2B transaction, the seller must first verify that the customer has a valid, traceable VAT ID, either directly or through an online verification tool such as VIES (VAT Information Exchange System) at the EU level, and then document the transaction. If the TAX ID can’t be validated, the transaction should be treated as B2C. 

In case of a B2B transaction, the customer pays VAT through self-assessment. The seller may issue an invoice without VAT (under reverse charge), apply a VAT exemption, or charge VAT at 0%, depending on the applicable rules.

The EU’s destination-based VAT threshold

EU-based SaaS businesses are subject to the €10 000 threshold for cross-border B2C digital services. Below it, you charge VAT based on your own country;  once you cross it, VAT is charged based on the customer's country instead. 

This doesn’t apply to non-EU businesses, for example a SaaS business based in the United States. From the first taxable sale in the EU, the business must register for VAT in the customer's Member State or through the non-EU One-Stop Shop (OSS) scheme. 

For subscription-based businesses, that €10,000 threshold is easy to cross without realising it, which is often how companies end up with VAT obligations they didn't know they had. The business is expected to track customer location, apply the correct VAT rate, and report the tax accordingly.

Managing VAT reporting

Is One Stop Shop (OSS) a simplification or a complexity?

On July 1, 2021, the EU adopted the e-commerce reform package that restructured the tax framework for EU and non-EU businesses selling in the EU. It has reduced the number of mandatory VAT registrations across the EU and, overall, reduced costs for businesses with customers in the Single Market. 

It allows both EU- and non-EU-based businesses to simplify their B2C VAT reporting by removing the need for local VAT registration in each Member State.

The OSS scheme permits SaaS businesses to:

• Register in one EU Member State if they are based outside the EU
• Report their B2C VAT through a single, simplified return
• Make one VAT payment for all of their B2C digital services 

One quarterly OSS return for B2C SaaS companies reduces the need for multiple VAT registrations. But it’s important to keep in mind that OSS is a reporting system, not a calculation tool. A business is still responsible for: 

• Determining how VAT should be charged for each transaction
• Keeping accurate sales and tax records
• Ensuring that data reported through OSS aligns with reality 

Filing through one return doesn't fix errors, but just centralises them. Wrong VAT rates, misclassified customers, or unreported transactions still flow straight through the accounting software into that single filing. 

VAT reporting is going digital (ViDA)

The EU’s VAT in the Digital Age initiative (ViDA) is moving toward real-time or near-real-time reporting. Today, the VAT reporting rules still differ across EU countries, but the ViDA package aims to remove those differences through mandatory digital reporting based on electronic invoices. 

EU resident businesses must issue electronic invoices for all EU B2B transactions. With electronic invoices, the part of the invoice used to identify the parties and to describe the financial aspects of the transaction will be reported online to the tax authorities. 

As noted by the OECD, tax administrations worldwide are adopting real-time data collection models to improve compliance and reduce fraud. For SaaS businesses, it reduces the time between a sale and the point at which tax authorities can see it. Mistakes in VAT will be identified more quickly, leaving less room for later correcting.

Practical VAT challenges

Customer location 

SaaS businesses often struggle with misaligned systems, data, and VAT logic. For example, customer location comes from inconsistent data points, such as a billing address, without evidence like an IP address or a payment method location. EU VAT rules require at least two non-contradictory pieces of evidence to support the customer’s location in B2C transactions. Failure to meet this can lead to an audit.

Tax calculation 

Subscription models are complex, especially when customers move countries and pricing doesn’t automatically update to different VAT rates.

If you sell software in-store or deliver it on a USB drive, the client's location is obvious. When clients use the software remotely, the provider needs to use tools to ensure accurate location because location determines the place of supply rules and the correct VAT rate for the sale.

When bundling a SaaS product with physical goods, training, or live consulting, the business should apply multiple tax rates because some jurisdictions differentiate between how physical and digital products are taxed. 

Three VAT tips for SaaS providers

Build VAT rules into your product early. To avoid tax penalties, apply the correct VAT rates, calculate tax correctly, keep the required records, and report VAT accurately.

Automate VAT calculations and validation. If the goal of the business is to reach customers in different countries and regions, you need to be aware that VAT rates for the digital product or service you offer vary. Transfer tax and accounting duties to a software solution that handles accurate VAT calculations. To simplify the tax ID validation process, many countries have implemented online Tax ID validation tools that allow businesses to enter a customer's VAT ID to check its validity.

Monitor VAT thresholds all the time. SaaS and other digital businesses can scale and enter new markets without a physical presence, such as an office there. Revenue from different jurisdictions can still mean tax obligations. In some countries, non-resident providers of digital services should register for VAT from their first sale with VAT. You need a system that tracks the VAT threshold across markets. 

How to stay compliant with 1stopVAT 

If you have questions or are already in compliance trouble, the wisest choice is to turn to a service provider. 

Born from an idea in 2020, 1stopVAT represents today a highly respected global VAT compliance service provider. We have clients from all regions of the world, and a strong network of tax professionals who assist us with local requirements when needed. 

We at 1stopVAT offer a portfolio of VAT compliance services. Our clients get an end-to-end VAT compliance solution that covers full alignment with tax requirements throughout the tax process for each transaction. 

We have 1000 clients and counting, confidently process more than 18 000 VAT returns each year, and operate in over 100 locations globally.

If you are looking for clarity on the VAT compliance rules applicable to your specific business model in the digital economy, feel free to reach out to us. We would be happy to assist you.

Check out 1stopVAT from the e-⁠Residency Marketplace!