This practical guide looks at companies providing ecommerce VAT services in London for online retailers, marketplace sellers, and businesses operating across multiple sales channels. Rather than ranking companies, it gives a clear overview of the different types of support available and the companies behind them. The selection ranges from larger companies with broad tax and accounting capabilities to more focused specialists dealing with ecommerce VAT, marketplace transactions, and cross-border compliance. Each profile provides context around the clients served, relevant areas of expertise, and particular strengths. The aim is to make comparison easier and help businesses identify a company that fits their operational and regulatory needs.
Acumon
Acumon is a UK company of chartered accountants providing specialist VAT support to ecommerce businesses, online retailers, marketplace sellers, and international businesses selling into or from the UK. Its ecommerce VAT service covers both routine compliance and more complex VAT questions created by multiple sales channels, cross-border transactions, imported goods, and stock held outside the UK.
The company supports sellers operating through Amazon, eBay, Shopify, their own websites, and other online channels. Acumon’s approach reflects the fact that marketplace transactions can involve different VAT liabilities depending on the seller’s location, the customer, the sales channel, and whether the marketplace is treated as the deemed supplier for a transaction.
Acumon handles UK VAT registrations and MTD-compliant VAT returns for domestic and overseas sellers. Its ecommerce VAT work includes reconciling platform settlement reports to VAT returns, accounting for refunds and chargebacks, dealing with multi-currency adjustments, and reviewing historic filings where VAT may have been declared incorrectly.
Cross-border ecommerce is another part of the service. Acumon supports VAT matters connected with EU consumer sales, OSS and IOSS, imported stock, postponed import VAT accounting, and overseas warehousing. Where EU registrations are required, the company coordinates the relevant registration process while handling UK VAT requirements directly.
The VAT team includes specialists with previous HMRC experience, while ecommerce accounting can be provided alongside VAT support. This allows marketplace sales, settlement data, inventory, fees, refunds, and VAT reporting to be considered within the same accounting framework rather than as disconnected processes.
Acumon is based in Ealing, London, and supports ecommerce businesses from its UK offices as well as businesses with international structures and overseas VAT obligations.
Ecommerce VAT Capabilities
Acumon provides VAT support across ecommerce sales channels, marketplace models, and cross-border trading arrangements.
These include:
- UK VAT registration and returns for domestic and overseas sellers
- Marketplace VAT treatment and deemed-supplier rules
- EU OSS and IOSS registration coordination
- Import VAT and postponed import VAT accounting
- Platform settlement report reconciliation
- Refunds, chargebacks, and multi-currency VAT adjustments
- Historic VAT reviews and correction of marketplace VAT errors
- MTD-compliant VAT filing based on platform transaction data
Acumon can combine these VAT services with ecommerce bookkeeping and accounting where sales, marketplace fees, inventory, and VAT reporting need to be reconciled within the same financial records.
Regulatory Licences and Registrations
Acumon operates as an ICAEW-registered chartered accountancy practice in the UK. Its wider professional registrations provide an established regulatory framework around the accounting, tax, and audit services delivered by the company.
These include:
- ICAEW registration as a chartered accountancy practice
- ICAEW registration to carry out audit work
- UK company registration for Acumon UK Limited
- UK VAT registration for Acumon UK Limited
The company’s audit registration is separate from its ecommerce VAT service, but it forms part of Acumon’s broader regulated professional practice in the UK.
Core Services
Alongside specialist ecommerce VAT support, Acumon provides broader VAT, accounting, and tax services that can support online businesses as their operations become more complex.
These include:
- Ecommerce VAT advisory and compliance
- UK VAT registration and deregistration
- MTD-compliant VAT returns
- International and cross-border VAT
- VAT recovery and error corrections
- VAT planning and health checks
- HMRC correspondence and VAT investigation support
- Ecommerce bookkeeping and accounting
- Accounts preparation and financial reporting
- Tax compliance and advisory services
Acumon’s ecommerce accounting service can reconcile marketplace settlements back to gross sales, fees, refunds, reserves, and other transaction components. It also supports inventory and margin reporting alongside the VAT treatment applied across different platforms and jurisdictions.
Acumon works with ecommerce businesses that are:
- Selling through Amazon, eBay, Shopify, Etsy, or multiple platforms
- Expanding from UK sales into EU consumer markets
- Importing goods into the UK
- Holding inventory in overseas warehouses
- Managing marketplace and direct website sales simultaneously
- Correcting historic VAT treatment across online sales
- Responding to HMRC questions about marketplace transactions
- Bringing ecommerce bookkeeping and VAT reporting into one accounting process
This structure allows Acumon to support both routine ecommerce VAT compliance and more technical situations involving marketplaces, international sales, imports, and changing fulfilment arrangements.
Contact Information
- Website: acumon.com
- Phone: 020 8567 3451
- Email: [email protected]
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
LOYALS Accountants & Business Consultants
LOYALS has a specific ecommerce accounting service for London online sellers using Shopify, Amazon, Etsy, eBay and other platforms. Its ecommerce work combines bookkeeping and marketplace reconciliation with UK VAT and EU OSS support, making the practice relevant where VAT reporting depends on transaction data spread across several sales and payment systems.
The firm deals with gross order values, marketplace and payment fees, refunds, chargebacks and multi-currency activity rather than treating marketplace payouts as straightforward sales income. It also supports Pan-EU Amazon FBA businesses and provides face-to-face access from its King’s Cross office alongside remote delivery.
Key Facts
- Ideal for: Shopify, marketplace and Amazon FBA sellers
- Core services: UK VAT, EU OSS VAT, ecommerce bookkeeping, annual accounts and corporation tax
- Platforms: Shopify, Amazon, Etsy and eBay
- Cross-border capabilities: EU OSS and Pan-EU FBA support
- Location: King’s Cross, London
- Notable strength: Detailed reconciliation of platform sales, fees, refunds and multi-currency transactions
Contact Information
- Website: www.loyals.uk
- Phone: 07450 258975
- Email: [email protected]
- Address: 39-41 North Road, King’s Cross, London N7 9DP
- LinkedIn: www.linkedin.com/in/london-accountant-kris-55102925b
- Facebook: www.facebook.com/people/Loyals-Accountants-Business-Consultants/100086982908143
- Instagram: www.instagram.com/loyals_accountants
Ecommerce Accountants
Ecommerce Accountants is a London-based practice built specifically around online sellers rather than ecommerce being one small sector within a general accountancy offering. Its published client categories include Amazon sellers, Shopify brands, eBay sellers, private-label businesses, dropshippers and direct-to-consumer brands.
VAT is integrated into the firm’s ecommerce bookkeeping model. The work takes account of VATable revenue, marketplace activity and sales reconciliations, while the wider service covers accounting and bookkeeping for businesses operating through multiple online channels. The practice operates under the Figio Group Ltd structure and identifies itself as an ACCA chartered accountancy practice.
Key Facts
- Ideal for: Ecommerce businesses wanting accounting and VAT under the same specialist practice
- Core services: Ecommerce VAT, bookkeeping and accounting
- Platforms and models: Amazon, Shopify, eBay, dropshipping, private label and DTC
- Location: London
- Professional status: ACCA chartered accountancy practice
- Notable strength: Ecommerce is the central focus of the practice rather than a secondary industry service
Contact Information
- Website: www.ecommerceaccountants.co.uk
- Address: 66 Paul Street, London, EC2A 4NA
- Facebook: www.facebook.com/ecommerceaccountants
- Twitter: x.com/ECommAccountant
- Instagram: www.instagram.com/ecommerceaccountants
Zmartly
Zmartly provides ecommerce accounting and dedicated VAT services from West London. Its online seller coverage includes Shopify, Amazon and multichannel businesses, with VAT support integrated into bookkeeping and wider company accounting.
The firm’s VAT service addresses areas particularly relevant to ecommerce, including import VAT and postponed VAT accounting, while its ecommerce materials cover cross-border sales and international VAT compliance. It can consolidate data from platforms such as Amazon, eBay and Shopify into the accounting process, which is useful where the VAT return depends on data from several sales channels rather than a single ledger.
Key Facts
- Ideal for: Shopify, Amazon FBA and multichannel ecommerce businesses
- Core services: VAT services, bookkeeping, corporation tax and ecommerce accounting
- Cross-border capabilities: International VAT and import VAT support
- Software approach: Integration of marketplace data with accounting systems
- Location: Hammersmith, London
- Professional status: CIMA-regulated practice
Contact Information
- Website: zmartly.co.uk
- Phone: 020 8175 5145
- Email: [email protected]
- Address: 12 Hammersmith Grove, London W6 7AP
- LinkedIn: www.linkedin.com/company/zmartly
- Facebook: www.facebook.com/zmartlyaccountants
- Instagram: www.instagram.com/zmartlyaccountants
Accotax
Accotax has a dedicated ecommerce accounting service aimed at businesses selling through Shopify, Amazon, eBay and similar channels. VAT and cross-border taxation sit directly within that service rather than being treated separately from ecommerce bookkeeping.
The practice supports VAT filings alongside sales-channel and payment-processor reconciliation. For businesses selling outside the UK, its ecommerce service includes support around international VAT registration, distance sales and customs considerations. Accotax has several locations in and around London, including a Chelsea meeting location, and describes itself as regulated through UK accountancy bodies including ICAEW, ACCA and AAT.
Key Facts
- Ideal for: London ecommerce companies combining bookkeeping, VAT and wider tax work
- Core services: VAT returns, VAT registration, bookkeeping, accounts and tax advisory
- Platforms: Shopify, Amazon and eBay
- Cross-border capabilities: International VAT, overseas selling and customs-related support
- Location: London and surrounding areas
- Notable strength: Ecommerce sales-channel integration alongside VAT reporting
Contact Information
- Website: accotax.co.uk
- Phone: 08006441258
- Email: [email protected]
- Address: 12 London Road, Morden, SM4 5BQ
- LinkedIn: www.linkedin.com/company/at-consultants-llp
- Facebook: www.facebook.com/accotax
- Twitter: x.com/accotax1
- Instagram: www.instagram.com/accotax1
Fusion Accountants
Fusion Accountants has an ecommerce-focused service for online retailers selling through Amazon, Shopify, Etsy and their own websites. VAT submissions form part of its ongoing ecommerce accounting packages rather than being limited to one-off VAT advice.
The practice prepares UK VAT returns under Making Tax Digital and states that it can support EU VAT reporting for businesses selling across borders. Ecommerce bookkeeping can be connected to sales platforms through tools such as Xero and A2X, helping to reconcile platform information before VAT and financial reports are prepared.
Key Facts
- Ideal for: Ecommerce businesses wanting ongoing bookkeeping and VAT filing
- Core services: VAT returns, bookkeeping, annual filings, payroll and corporation tax
- Platforms: Amazon, Shopify and Etsy
- Cross-border capabilities: EU VAT reporting support
- Software: Xero and ecommerce integrations including A2X
- Location: London
Contact Information
- Website: www.fusionaccountants.co.uk
- Phone: 020 8577 0200
- Email: [email protected]
- Address: Ground Floor 90, Long Acre, Covent Garden, London, WC2E 9RZ
- LinkedIn: www.linkedin.com/company/fusion-accountants-ltd
- Facebook: www.facebook.com/fusioncharteredaccountants
- Twitter: x.com/fusionaccountan
Astute Accountants
Astute Accountants has a defined retail and ecommerce sector practice from its East London office. It works with online sellers, Amazon businesses and growing ecommerce brands, with VAT and international compliance forming one of the core services offered to the sector.
The service is broader than return preparation alone. Astute combines VAT work with marketplace fee reconciliation, inventory and margin reporting, cloud accounting and bookkeeping. That structure may be relevant to sellers whose VAT records need to be reconciled with inventory movements, marketplace charges and multiple sources of transaction data.
Key Facts
- Ideal for: Owner-managed retail and ecommerce businesses
- Core services: VAT and international compliance, bookkeeping, inventory reporting and marketplace reconciliation
- Client types: Online sellers, Amazon businesses and growing ecommerce brands
- Software: Sage, Xero and QuickBooks
- Location: Leytonstone, East London
- Notable strength: VAT support linked to inventory, margin and marketplace reporting
Contact Information
- Website: www.astuteaccountants.co.uk
- Phone: 020 8539 8400
- Email: [email protected]
- Address: 565 High Road, Leytonstone, London E11 4PB
Accusolve Accountants
Accusolve explicitly provides both ecommerce accounting and ecommerce VAT support for London businesses. Its ecommerce service covers Shopify stores, Amazon sellers, marketplace businesses, subscription businesses and online service providers, with bookkeeping and VAT handled alongside company accounts and tax.
Its separate London VAT service includes registration, VAT return preparation, MTD-compatible record keeping and reviews of bookkeeping errors. Ecommerce and overseas-owned companies are specifically identified among the types of businesses supported, giving the practice relevance to both domestic sellers and businesses using a UK company for international ecommerce activity.
Key Facts
- Ideal for: London SMEs, marketplace sellers and overseas-owned UK ecommerce companies
- Core services: VAT registration, VAT returns, ecommerce VAT, bookkeeping and MTD support
- Platforms: Shopify, Amazon and other marketplaces
- Location: Greater London
- Notable strength: VAT workflows connected directly with ecommerce bookkeeping and cloud accounting
Contact Information
- Website: accusolveaccountants.com
- Phone: 0203 092 6909
- Email: [email protected]
- Address: 38B Monahan Avenue, Purley, England, CR8 3BA
- Facebook: www.facebook.com/accusolveaccountants
- Twitter: x.com/accusolve
Protax
Protax provides London VAT return and advisory services with ecommerce identified as a specific VAT area. Its service covers marketplace VAT rules, OSS registrations and VAT issues affecting online sellers, alongside the broader compliance work needed to prepare and submit VAT returns.
The practice can also support import VAT and postponed VAT accounting, which becomes relevant when an ecommerce business brings stock into the UK rather than buying entirely from domestic suppliers. HMRC VAT investigations and more specialist VAT situations sit within the same service, making Protax relevant where a seller needs more than routine quarterly filing.
Key Facts
- Ideal for: Ecommerce sellers with marketplace, OSS or import VAT questions
- Core services: VAT returns, ecommerce VAT, import VAT and VAT investigation support
- Cross-border capabilities: OSS and imported-goods VAT
- Location: London
- Notable strength: Ecommerce VAT is addressed within a wider specialist VAT service
Contact Information
- Website: www.protax.org.uk
- Phone: +44 208 545 7451
- Email: [email protected]
- Address: Lombard Business Park, 8 Lombard Rd, London SW19 3TZ
- Facebook: www.facebook.com/people/Protax-Consultants-Ltd/61556833455886
- Instagram: www.instagram.com/protax_consultants_ltd
Cigma Accounting
Cigma Accounting has a dedicated ecommerce accounting service for London businesses, with VAT compliance forming a substantial part of the offering. It supports businesses using major ecommerce platforms and reconciles transactions across Shopify, Amazon and eBay as part of its bookkeeping process.
Its VAT work includes registration and threshold monitoring, VAT returns, OSS for EU sales, Making Tax Digital compliance and cross-border sales tax advice. This makes the service relevant to online retailers whose VAT obligations have expanded as sales have moved from the UK into EU or wider international markets.
Key Facts
- Ideal for: Ecommerce businesses selling through several online platforms
- Core services: VAT registration, VAT filing, OSS, MTD and ecommerce bookkeeping
- Platforms: Shopify, Amazon and eBay
- Cross-border capabilities: EU OSS and international sales tax advice
- Location: London
- Notable strength: VAT support integrated with multichannel transaction reconciliation
Contact Information
- Website: cigmaaccounting.co.uk
- Phone: +44 2045 518463
- Email: [email protected]
- Address: 165-167 Highland House, Wimbledon, London, SW19 1NE
East London Accountants
East London Accountants provides a dedicated service for Amazon sellers and other marketplace retailers in London. The practice addresses VAT as part of the financial setup for Amazon FBA and multichannel businesses rather than treating marketplace revenue as ordinary domestic retail activity.
Its published Amazon seller service includes support with UK and EU VAT registration rules, distance selling, import and export tax implications and VAT treatment associated with Amazon fees and international transactions. The firm also works with businesses selling through Amazon, eBay, Shopify and other ecommerce channels.
Key Facts
- Ideal for: Amazon FBA and marketplace businesses
- Core services: Ecommerce accounting, VAT support and international tax advice
- Platforms: Amazon, eBay and Shopify
- Cross-border capabilities: UK and EU VAT, distance sales and import/export considerations
- Location: London
- Notable strength: Dedicated Amazon seller accounting service
Contact Information
- Website: www.eastlondonaccountants.com
- Phone: 020 7118 0057
- Email: [email protected]
- Address: Bow Road, London , E3 3AH
Accountants for eCommerce
Accountants for eCommerce focuses on accounting and tax work for online businesses using Amazon, eBay, Shopify, Etsy, dropshipping and related ecommerce models. The practice describes itself as a London accountancy business with a dedicated VAT service for ecommerce clients.
Its VAT support is positioned around VAT planning, compliance and advice for online sellers, alongside wider accounting and tax services. Compared with firms focused heavily on international automation, this is closer to a traditional accountancy relationship built specifically around smaller ecommerce businesses and their UK tax requirements.
Key Facts
- Ideal for: Small ecommerce businesses and marketplace sellers
- Core services: Ecommerce accounting, VAT advice and tax support
- Platforms: Amazon, eBay, Shopify and Etsy
- Location: London
- Notable strength: Ecommerce-focused accountancy with a dedicated VAT service
Contact Information
- Website: www.accountantsecommerce.co.uk
- Phone: +44 (0) 20 3103 0058
- Email: [email protected]
- Address: Profile West, Suite 2, First Floor, 950, Great West Road, Brentford, TW8 9ES
E-commerce Accountants UK
E-commerce Accountants UK provides remote specialist accounting and VAT services to online sellers throughout the country, with London explicitly included within its service coverage. The service is delivered through Tidy Money Ltd, an ACCA-regulated practice.
Its VAT work covers Amazon FBA, Shopify, eBay, TikTok Shop and other ecommerce businesses, with support for VAT returns, international sales tax, OSS, digital services and post-Brexit import obligations. Because delivery is remote, it differs from firms with a central London meeting model, but it can still be used by London sellers that want an ecommerce-specific accountant rather than a geographically local generalist.
Key Facts
- Ideal for: London sellers comfortable with a remote specialist service
- Core services: Ecommerce VAT, VAT returns, bookkeeping and tax
- Platforms: Amazon, Shopify, eBay and TikTok Shop
- Cross-border capabilities: OSS, international VAT and post-Brexit import issues
- London coverage: Explicitly serves London and the South East
- Professional status: Services provided by ACCA-regulated Tidy Money Ltd
Contact Information
- Website: www.ecomaccountants.uk
Forvis Mazars
Forvis Mazars approaches ecommerce VAT from the perspective of a larger VAT and indirect tax practice rather than as a specialist bookkeeping service for small marketplace sellers. Its London VAT team supports international and mid-market businesses and provides VAT compliance, registration, overseas VAT advice, health checks and assistance with HMRC enquiries.
Its consumer and retail practice explicitly addresses ecommerce and VAT within the wider supply-chain environment. The firm has also published detailed guidance dealing with marketplace VAT, Amazon transactions and changes affecting low-value ecommerce imports. This makes it more relevant to larger retailers, groups and international ecommerce businesses facing technical VAT questions across several jurisdictions.
Key Facts
- Ideal for: Mid-market, international and more complex ecommerce or retail groups
- Core services: VAT compliance, registrations, advisory, health checks and HMRC support
- Sector coverage: Retail and consumer markets
- Cross-border capabilities: Overseas VAT registrations and international VAT advice
- Location: 30 Old Bailey, London
- Notable strength: Larger indirect tax team for complex cross-border and marketplace VAT issues
Contact Information
- Website: www.forvismazars.com
- Phone: +44 (0) 20 7063 4000
- Address: 30 Old Bailey, London, EC4M 7AU, United Kingdom
- LinkedIn: www.linkedin.com/company/forvis-mazars-in-the-uk
- Twitter: x.com/ForvisMazarsUK
- Instagram: www.instagram.com/forvismazarsuk
Conclusion
Choosing between ecommerce VAT services in London depends on business size, sector, the maturity of internal processes, and the regulatory requirements created by the company’s sales model and geographic reach. Some companies combine VAT with wider accounting, tax, and compliance support, while others concentrate more narrowly on ecommerce, marketplaces, or cross-border VAT matters. The most suitable partner should provide dependable oversight together with practical measures that help reduce compliance risks and strengthen operational resilience. This guide is intended to provide neutral context for comparing the different approaches available rather than suggesting that one company will suit every ecommerce business. The final choice should reflect the complexity of the VAT position, the level of specialist input required, and the broader support the business expects from its adviser.