Requirements · Ecommerce platforms
Legal and tax requirements for opening an online store
Last updated 25 October 2026 · 4 sources listed · Reading time about 4 minutes
Short answer
Selling online usually involves registering the business in some form, handling indirect tax such as sales tax or VAT where thresholds apply, publishing trader information and returns terms, protecting personal data and following product safety and advertising rules. Requirements vary significantly by country and by what you sell, so verify with your national authorities and a qualified adviser. This page outlines topics to check, not advice.
Who this is for: A first-time merchant setting up an online shop who wants to understand the legal and tax topics to settle before taking orders.
What to evaluate
Business registration
Many countries require traders to register a business or self-employment before selling regularly, and banks and payment providers ask for it.
How to check: Consult your national business registry or tax authority on the form of registration for your activity.
Indirect tax obligations
Sales tax, VAT or goods and services tax rules depend on where you and the buyer are, on thresholds, and on whether platforms collect on your behalf.
How to check: Ask your tax authority or an accountant which registrations apply to each region where you have customers.
Mandatory trader information
Consumer law in many places requires clear business identity, contact details and pricing information on the site.
How to check: Review your consumer protection body's guidance on online trader disclosures.
Distance selling and returns rules
Several jurisdictions give consumers cancellation or withdrawal rights for online purchases, with specific information duties and refund timing.
How to check: Check the rules in each country you sell to and write policy pages that reflect them.
Personal data protection
Collecting names, addresses and order histories triggers privacy obligations, often including lawful basis, notices, security and rights requests.
How to check: Read your data protection authority's small business guidance and map what data your shop collects.
Product safety and labelling
Goods such as electricals, cosmetics, toys and food have mandatory standards, labelling and sometimes importer duties.
How to check: Search your product category on the relevant safety regulator's website before listing.
Advertising and review rules
Claims, endorsements and reviews must not mislead, and regulators pursue fake testimonials and hidden sponsorship.
How to check: Read national advertising and consumer guidance on endorsements and price claims.
Comparison
| Area | What to find out | Usual authority to consult |
|---|---|---|
| Business set-up | Form of registration and licences for your goods | National or local business registry and tax authority |
| Indirect tax | Registration thresholds and rules for cross-border sales | Tax or revenue authority |
| Consumer rights | Required disclosures, cancellation and refund rules | National consumer protection agency |
| Privacy | Notices, consent for marketing, security duties and data subject rights | Data protection authority |
| Product rules | Safety standards, labelling and import restrictions | Product safety regulator and customs |
Decision worksheet
Rate up to three options against this guide’s own criteria. It runs in your browser and saves only on this device. It is a thinking aid, not a recommendation.
1. Have you checked each criterion?
0 of 7 criteria checked.
2. Compare options (0 = fails or unknown, 3 = meets it well)
| Criterion | |||
|---|---|---|---|
| Business registration | |||
| Indirect tax obligations | |||
| Mandatory trader information | |||
| Distance selling and returns rules | |||
| Personal data protection | |||
| Product safety and labelling | |||
| Advertising and review rules | |||
| Total (max 21) | 0 | 0 | 0 |
Questions to ask before you commit
- In which countries will my customers be located, and which rules follow them?
- Do I need to register for sales tax or VAT, and does my marketplace or platform collect it for me?
- What information must appear on my website about the business and its contact details?
- What cancellation and return rights must I offer to consumers, and what must I say about them?
- How will I store and secure customer data, and for how long will I keep it?
- Do my products need safety testing, markings or import documentation?
- Are there restrictions on shipping my goods internationally or on advertising claims for them?
- Which professional should check my terms and policies before I launch?
Typical trade-offs
Sell only domestically at first
- Upside
- Fewer legal and tax regimes to understand.
- Downside
- Limits market size and may leave demand from abroad unserved.
Use templates for policy pages
- Upside
- Quick starting point and consistent structure.
- Downside
- May not reflect your actual practices or local mandatory wording.
Use a service that handles tax calculation
- Upside
- Reduces errors in rates and thresholds.
- Downside
- Ongoing cost and you still carry responsibility for registrations and filings.
Ship worldwide from the start
- Upside
- Wider audience and fewer geographical limits.
- Downside
- Import duties, product rules and consumer rights in many places at once.
Common mistakes
- Assuming the platform handles all compliance. Software provides tools, but the trader remains responsible for accuracy and registrations.
- Copying another shop's policies verbatim. Their terms may reflect a different country, product type or practice from yours.
- Ignoring thresholds until they are passed. Track sales by country so you can register in time where rules require it.
- Collecting customer data without a purpose. Gather only what is needed, secure it and explain its use in a privacy notice.
- Making unsubstantiated product claims. Health, environmental and performance claims attract regulator attention, so keep evidence on file.
Related questions
Do I have to charge sales tax or VAT on every order?
Not necessarily, but you may have obligations that depend on your location, your customers' location, annual sales thresholds and the type of goods. Some regions let marketplaces collect and remit on your behalf, while others expect sellers to register and file. Tax authorities publish guidance on online and cross-border sales, and an accountant can map the rules to your situation. Record where each order ships from the first sale.
What must my website tell customers?
Most consumer protection regimes expect clear trader identity and contact details, a description of the goods, the total price including taxes and delivery, payment and delivery arrangements, and cancellation or return rights. Some also require specific withdrawal information or a model form. The details vary by country, so use your consumer agency's business guidance and the rules of the countries you sell into.
Do I need a privacy policy?
If you collect personal information such as names, addresses or email addresses, which every shop does, privacy law in many places requires you to explain what you collect, why, how long you keep it and what rights people have. Cookie and tracking consent rules can also apply. Your data protection authority publishes plain-language guidance for small businesses that is a good starting point.
Are there special rules for selling to consumers in other countries?
Yes. Consumers abroad may be protected by their own national rules even when you are based elsewhere, particularly for cancellation rights, product safety and data protection. In practice many small merchants limit shipping to places whose rules they have reviewed. Cross-border consumer assistance networks and national agencies publish guides for traders, so consult them before opening new markets.
Can I sell any product online?
No. Certain goods are restricted, require licences or must meet safety and labelling standards, including food, cosmetics, electrical equipment, toys, medicines and age-restricted items. Payment providers and marketplaces may also prohibit categories regardless of local law. Check your national product safety regulator and the terms of every service you plan to use before sourcing stock.
Sources and further reading
These pages were reachable when we last checked. They informed definitions and rules referred to above; they do not endorse this guide. Where rules differ by country, check the authority for your location.
- Business Guidance — Federal Trade Commission, retrieved 27 October 2026
- Consumer protection rights — GOV.UK, retrieved 27 October 2026
- Data protection — European Commission, retrieved 27 October 2026
- Australian Competition and Consumer Commission — ACCC, retrieved 27 October 2026
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