Sales Tax & VAT Calculator

Sales tax is collected only at the final point of sale to the consumer — businesses in the supply chain do not pay it on their purchases. It is the dominant model in the United States. VAT (Value Added Tax) is collected at every stage of the supply chain, but businesses can reclaim the VAT they pay on inputs through a "VAT credit" system. The consumer ultimately pays the same final tax under both systems, but VAT creates a paper trail at every transaction, reducing evasion. The EU, UK, Australia, and most of the world use VAT. The US and a few others use retail sales tax.

Reverse charge is a VAT mechanism where the buyer (rather than the seller) accounts for the VAT. It is commonly used in B2B transactions where the buyer and seller are in different countries. For example, if a UK business purchases digital services from a US vendor, the UK business self-assesses VAT at the UK rate rather than the US vendor charging it. This prevents foreign vendors from needing to register for VAT in every country they sell to. It is widely used for digital services in the EU, UK, and increasingly globally.

Yes, in most jurisdictions. In the US, the 2018 South Dakota v. Wayfair Supreme Court ruling eliminated the physical presence requirement. Any seller exceeding economic nexus thresholds in a state (typically $100,000 in sales or 200 transactions per year) must collect and remit sales tax in that state. In the EU, the OSS (One Stop Shop) scheme allows EU sellers to register in one country and pay VAT for all EU sales. Non-EU sellers must also register for EU VAT above the €10,000 annual threshold for digital services to EU consumers.

Since 2015, EU VAT rules require that digital services (streaming, downloads, SaaS, e-books, online courses) are taxed in the country where the customer is located, not where the supplier is based. This means a UK SaaS company selling to German customers must charge German VAT (19%), not UK VAT. For non-EU businesses, the obligation to register for and charge EU VAT applies once any sales are made to EU consumers. The EU OSS scheme simplifies compliance by allowing a single registration for all 27 EU member states.

Not always, and the rules are complex. In the US, most states exempt unprepared grocery food and prescription medications from sales tax, but prepared food (restaurant meals) is typically taxed. In the EU, member states have discretion over reduced rates for food — Germany charges 7% on most food, France 5.5%, Italy 4% on essentials. The UK, Australia, and Canada zero-rate most basic food. Medical and pharmaceutical products generally receive favorable treatment globally, though the specific rules vary by product type (prescription vs OTC vs medical devices).

Nexus is the legal connection that creates an obligation for a business to collect sales tax in a particular jurisdiction. Nexus can be created by physical presence (office, warehouse, employees, or inventory in a state), economic activity (meeting the state's revenue or transaction thresholds), click-through arrangements (affiliate relationships), or marketplace facilitator rules. After the Wayfair decision, all 45 states with a sales tax have enacted economic nexus laws. Businesses with customers in multiple states should use a tax compliance platform like Avalara, TaxJar, or a professional accounting service to manage nexus obligations.

For US-based Shopify stores, Shopify's built-in tax engine handles most state nexus calculations automatically. However, you must still register for a sales tax permit in each state where you have nexus before collecting. For international sales, you need to configure VAT/GST rules per region. ECOSIRE's Shopify services include tax configuration, nexus review, and integration with compliance tools like Avalara. For complex multi-state or multi-country operations, we recommend dedicated tax compliance software and quarterly reviews with a qualified accountant.

SaaS and software subscriptions are generally treated as "electronically supplied services" and taxed at the standard VAT/GST rate in most countries. In the EU, standard rates apply (Germany 19%, France 20%, Italy 22%, etc.). The UK charges 20% standard VAT on software subscriptions. Australia charges 10% GST. The UAE charges 5% VAT. Some countries have specific rules for B2B vs B2C digital services, with B2B transactions often subject to reverse charge mechanisms that shift the compliance obligation to the customer.