Ecommerce Tax & VAT

UK VAT registration triggers at £90,000 of taxable turnover in any rolling 12-month period (rising annually with the threshold; £85,000 before April 2024). For ecommerce sellers the trap is platform-collected VAT under marketplace facilitator rules — Amazon, eBay, Etsy, and others collect and remit VAT for under-£135 sales to UK consumers from non-UK-established sellers, which masks the gross turnover figure on the seller's reports. Sellers calculating their threshold from the deposit total rather than the gross sale value frequently cross £90k without realising and pick up backdated VAT exposure plus penalties.

OSS (One Stop Shop) is the EU mechanism for distance selling — UK sellers shipping to EU consumers register once, in any single EU member state, and file a periodic OSS return covering all EU consumer sales across all member states. UK-established sellers most commonly register in Ireland (English-language administration, accessible documentation), but other member states are possible. Without OSS, the seller has to register for VAT individually in each EU member state where the distance-selling threshold is exceeded. OSS is the default for any UK ecommerce seller with material EU distance-selling activity.

IOSS (Import One Stop Shop) handles under-€150 imports being shipped into the EU directly from non-EU stock. Used heavily by sellers fulfilling from UK warehouses or from non-EU dropshipping arrangements to EU consumers. Without IOSS, each parcel is potentially subject to VAT and customs handling on entry into the EU, which delays delivery and creates customer-experience problems. IOSS registration through any EU member state is straightforward; the periodic return is monthly.

Pan-EU FBA and other platform-led stock movement creates VAT obligations beyond OSS. Once stock is held in an EU country, the seller has a VAT registration trigger there from day one regardless of sales volume. Pan-EU FBA can move stock to Germany, France, Italy, Spain, Poland, and the Czech Republic — six potential VAT registrations. OSS doesn't cover sales fulfilled from in-country stock; those fall under local VAT. Specialist accountants run the cost-benefit modelling before opting in and handle the compliance afterwards.

Corporation tax for ecommerce limited companies follows the same rules as any other limited company — but the computation is influenced heavily by ecommerce-specific factors. Inventory valuation at landed cost (purchase price + inbound shipping + customs duties + capitalisable platform inbound fees) under FRS 102 / FRS 105. Realised FX gain/loss on multi-currency settlement. Platform fee categorisation (cost of sales vs administrative). R&D tax credits where the seller is doing genuinely innovative work (proprietary integrations, novel logistics, sustainability prototypes — though the bar is high). Specialist ecommerce accountants get the computation right; generalists frequently miss the inventory and FX adjustments and end up with an overpaid corporation tax position.

Marketplace facilitator collection masking turnover — Amazon, eBay, and Etsy collect and remit UK VAT for under-£135 sales to UK consumers from non-UK-established sellers, and similar collection occurs in EU jurisdictions and US states. The seller's deposit is net of the MF VAT; the MF VAT is paid by the platform directly to HMRC or the relevant authority. Sellers calculating their UK VAT registration threshold from net deposits rather than gross sales frequently cross £90k unknowingly. Specialist accountants reconcile gross sales separately from MF-collected VAT.

Place of Supply rules for digital services — software, e-books, downloadable content, online courses follow the customer's location for VAT purposes (the consumer's country, not the seller's). Each EU member state's VAT rate applies to that country's sales. Without OSS or local VAT registration in each market, the seller has compliance debt accumulating per consumer per country. Digital-product Etsy and Shopify sellers frequently underestimate this exposure.

Reverse-charge VAT for B2B construction-related services — sellers supplying construction services to other VAT-registered UK businesses fall under the reverse charge regime (the customer accounts for VAT, the supplier invoices net). Most ecommerce isn't in scope but ecommerce sellers operating alongside construction supply chains (custom fabrication, building products, certain trades-related kit) may have transactions that fall in. Specialist accountants flag and handle these correctly; generalists frequently apply standard VAT and create reconciliation problems for the customer.

Distance selling thresholds for non-EU markets — selling to consumers in Switzerland, Norway, or other non-EU jurisdictions has its own per-country distance-selling thresholds and VAT obligations. Specialist accountants identify when these thresholds are being crossed; generalists frequently miss them entirely.

Inventory valuation under HMRC challenge — the most common HMRC compliance check finding for ecommerce limited companies is inventory valuation at incorrect cost basis (purchase price only, ignoring inbound shipping, customs duties, and platform inbound fees). Specialist accountants set up the chart of accounts to capture landed cost from day one; generalists default to expensing inbound costs and booking stock at purchase price.

R&D tax credit applicability — the regime tightened materially from April 2023 (lower SME rate, payable credit at 14.5p in the pound for non-loss-makers, separate intensive R&D regime for high-R&D-ratio loss-makers). Most run-of-the-mill ecommerce work doesn't qualify. Where there's genuinely novel work — proprietary platform integrations, novel logistics solutions, sustainability prototyping — the credit can still be meaningful. Specialist accountants scope the question honestly; generalists either over-claim or never claim at all.