Cross-Border Tax for E-commerce
Expert cross-border tax compliance for UK e-commerce businesses selling internationally — covering EU VAT OSS, IOSS for low-value imports, US state nexus, customs duty, and post-Brexit international selling obligations.
Cross-Border Tax for E-commerce: the specialist difference
Cross-border tax for UK e-commerce sellers is one of the most genuinely complex areas of business taxation — and it has become dramatically more so since Brexit. Selling internationally now means navigating UK VAT, EU VAT OSS, IOSS for low-value goods, US state tax nexus, import customs duty and classification, and the specific rules of any additional market you sell into — simultaneously, with different filing deadlines and currencies for each.
The consequences of cross-border tax non-compliance are disproportionately severe. EU tax authorities will issue assessments for back-VAT on years of unregistered sales. US states increasingly pursue UK sellers for uncollected sales tax through marketplace facilitator audits. And customs classification errors create import duty liabilities that can exceed the value of the goods themselves for high-volume sellers.
Our matched cross-border tax specialists understand the full international picture for UK e-commerce businesses. They identify your actual compliance obligations across every market you sell into, manage the necessary registrations, and handle ongoing returns — so you can expand internationally without the tax tail wagging the business dog.
What our matched accountants deliver
EU VAT OSS and IOSS Management
Complete management of EU VAT One Stop Shop registration and quarterly returns for B2C goods sales, plus IOSS (Import One Stop Shop) for low-value goods under €150 sent directly from the UK to EU consumers. IOSS dramatically reduces delivery friction by collecting EU VAT at checkout rather than at the customer's door.
US Sales Tax Nexus Analysis
US sales tax is a 50-state minefield. Economic nexus thresholds vary by state, Amazon FBA inventory creates physical nexus in states where your stock is held, and marketplace facilitator rules only cover some of your US sales. Specialists conduct full nexus analysis, manage state registrations, and handle filing in every state where you have obligations.
Customs Duty and HS Code Classification
Incorrect HS commodity codes on customs declarations lead to wrong duty rates, potential penalties, and delayed shipments. Specialists review your product classifications, ensure correct duty treatment for both imports and exports, and set up the documentation procedures needed for high-volume cross-border shipping.
Post-Brexit Compliance Restructuring
Many UK businesses set up EU entities, use customs warehouses, or restructured their supply chains post-Brexit without fully understanding the ongoing accounting and tax implications. Specialists review your current structure against your cross-border obligations and identify where simplification or correction is needed.
Specialist cross-border tax advice is essential for e-commerce businesses in these situations:
- Selling goods to EU consumers above €10,000 annually without VAT OSS registration in place
- Shipping low-value goods (under €150) directly to EU consumers and not using IOSS — causing delivery friction and abandoned parcels
- Using Amazon FBA in the US and not knowing which states your inventory creates nexus in
- Importing goods from China or other non-UK suppliers and unsure whether your HS codes and duty payments are correct
- Having received compliance correspondence from an overseas tax authority and unsure how to respond
The process, step by step
International Tax Exposure Mapping
Comprehensive analysis of every market you sell into, your sales volumes by destination, fulfilment methods, stock locations, and existing registrations. A clear map of your actual compliance obligations versus your current compliance position.
Priority Registration and Remediation
Registrations arranged in order of risk — EU OSS and IOSS first, then US state registrations, then any other jurisdictions. Where historic non-compliance exists, your accountant quantifies the exposure and manages the disclosure or settlement process with the relevant authority.
Customs and Documentation Review
Review of your import and export documentation, HS code classifications, and customs procedures. Corrections made where needed, and systematic procedures established for ongoing cross-border shipping compliance.
Ongoing Multi-Jurisdiction Returns
Coordinated management of all your international filing obligations — EU OSS quarterly returns, IOSS monthly returns, US state returns, and any other recurring international filings — with consolidated reporting to give you a clear picture of your global tax position.
What our clients say
“Running my Amazon FBA business was getting complex with stock in multiple fulfilment centres. The accountant I found through this service sorted out my inventory tracking and VAT on EU sales perfectly. They understand the FBA model completely and saved me hours of confusion.”
“Selling on eBay, Amazon and my own Shopify store meant three different payment systems and currencies to track. My matched accountant streamlined everything into one clear system. They know exactly how to handle multi-channel e-commerce properly.”
“The VAT OSS scheme for my EU customers was completely baffling until I found my accountant through this service. They explained exactly how it works for my online business and set up the quarterly returns perfectly. No more VAT headaches.”
Cross-Border Tax for E-commerce Pricing Guide
Fees vary depending on the service and business complexity. Below are typical costs from accountants in our network. All prices are in GBP.
| Service Type | Price Range |
|---|---|
E-commerce Tax Returns | £350 to £1,200 |
What's Included in the Fee
- Self-assessment or corporation tax preparation, platform income consolidation, international sales reporting
- Transaction recording, platform reconciliation, payment gateway matching, monthly reports
- VAT return preparation, OSS compliance, digital services VAT, marketplace rules application
- FBA fee reconciliation, inventory tracking, multi-country VAT, settlement report analysis
- Multi-country registration, tax calculations, periodic returns, nexus monitoring
- Stock valuation, cost of goods sold, multi-location tracking, write-off management
Flexible Monthly Payments
Many e-commerce accountants in our network offer fixed monthly fees so you can budget with confidence. Payment terms are agreed directly with your matched accountant.
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Cross-Border Tax for E-commerce — common questions
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