Storing Stock in the UK and VAT — When Stock Alone Forces Registration (2026)
Why this is the biggest compliance trap for Polish sellers
Over the past two years the EasyClearance Team has opened conversations with dozens of Polish sellers who received an HMRC letter titled "Notice of liability to be registered for VAT — backdated effective date". The substance is always the same: HMRC has detected that the seller held stock in Amazon FBA UK for, say, 14 months, was not registered for UK VAT, and therefore VAT is due on all prior turnover, plus a penalty, plus interest. The average case in our practice: £35,000–£80,000 of total liability.
The root cause is singular: the seller confuses the £85,000 threshold for UK-established businesses with the £0 threshold for non-established sellers. The assumption runs: "I will start selling, see how it goes, and once I approach £85,000 I will register for VAT." That works for a UK Ltd. based in Manchester. For a Polish sp. z o.o. with stock in the FBA warehouse in Rugeley, it is a recipe for disaster.
This article is a complete walkthrough of the NETP (Non-Established Taxable Person) rule — the first of its kind in Polish-oriented English content for sellers. It covers: when the obligation arises (a timeline of trigger events), how to register for UK VAT step by step, how HMRC detects unregistered sellers, and what the real penalties look like. For a broader IOR context, see our pillar Importer of Record UK — what it is; for FBA specifics — Amazon FBA UK — duty and VAT guide.
What the NETP rule is and why it changes everything
NETP stands for Non-Established Taxable Person. It is a category of VAT-registered taxpayer described in Notice 700/1, section 9. It covers any person or business making supplies of goods or services on UK territory that has no UK place of business or fixed establishment in the UK.
For an NETP the rules differ sharply from those for a UK-established business:
| Criterion | UK-established (e.g. UK Ltd.) | Non-established (e.g. Polish sp. z o.o.) |
|---|---|---|
| VAT registration threshold | £90,000/year (2026) | £0 — from the first taxable supply |
| When the obligation arises | Exceeding the threshold over any rolling 12 months | First day stock is held in the UK with intent to sell |
| UK address required | Registered place of business | Correspondence only (agent address or PO Box acceptable) |
| UK bank account | Preferred, not mandatory | Not mandatory (SEPA accepted for refunds, but a UK IBAN simplifies matters) |
| Legal basis | VAT Act 1994 section 3 plus Schedule 1 | VAT Act 1994 Schedule 1A plus Notice 700/1 s. 9 |
The key sentence in Notice 700/1: "If you are an NETP making taxable supplies in the UK, you must register for UK VAT regardless of the value of those supplies". In other words — even £0 turnover triggers the registration duty if there is intent to make taxable supplies. The trigger is read broadly: accepting goods into a UK warehouse equals intent to sell equals registration.
Three scenarios that force UK VAT — concrete triggers
In practice, 95% of the Polish-seller cases EasyClearance Team sees fall into three scenarios:
Scenario A: Amazon FBA UK
The most common one. A Polish seller sends a pallet to an Amazon fulfilment centre (Manchester, Rugeley, Dunfermline, Dartford). The moment Amazon confirms check-in in Seller Central (status "Received") is the moment the UK VAT obligation arises. From that day onward every B2C sale through Amazon UK creates a tax liability, even if Amazon collects VAT as marketplace facilitator (see gov.uk — VAT on overseas goods sold to customers in the UK).
The catch: Amazon shares data with HMRC from January 2021 onwards. Every non-established seller holding stock in the UK is visible in HMRC's database — with the date of first check-in, stock value and turnover. HMRC algorithms automatically generate control lists.
Scenario B: 3PL (third-party fulfilment)
Huboo, ShipBob UK, James & James, PackHelp UK, Whistl, Royal Mail fulfilment. The seller ships to the 3PL, the 3PL accepts goods, stores them, and ships to B2C or B2B customers. The moment of check-in at the 3PL is the NETP trigger.
The catch: some 3PLs offer "VAT pass-through" or "fiscal representation" — be careful, this does not remove the seller's obligation to register, it only adds an assistance service. The IOR remains the seller.
Scenario C: Own leased warehouse in the UK
Some sellers (typically B2B or high-volume D2C) lease a warehouse in the UK — for instance a 300 m² unit near Birmingham. The moment the first container is offloaded is the trigger. Even if this is the first container and nothing has been sold yet.
Decision tree: do you need to register for UK VAT?
A simple decision flow for a Polish or EU seller weighing whether NETP applies:
In 90% of Polish e-commerce cases, the answer stops at the second question: "Do you have goods in the UK?" — if YES, registration is unavoidable.
How to register for UK VAT as an NETP — 6 operational steps
Practical procedure, timings, and required documents. Below is the narrative version — the schema.org HowTo at the top of the article carries the structured version.
Step 1: Identify the effective date
Pin down the exact date from which the VAT obligation activates. For Amazon FBA it is the date of first pallet check-in; for 3PL — the goods-in receipt date; for your own warehouse — the offloading date. That date becomes the effective date of registration on form VAT1. If you already have stock in the UK without registration, the date is in the past and the registration is backdated. Do not hide it — HMRC already knows.
Step 2: Assemble the documentation
HMRC asks for: a copy of company registration (KRS or CEIDG extract with translation), Polish NIP, details of all owners over 25% (passports, home addresses), a 12-month UK turnover forecast, a description of the business model (Amazon FBA? own site? B2B?), a UK correspondence address (agent is fine), and bank details for refunds.
Step 3: Apply online on gov.uk
Path: gov.uk/register-for-vat → "business based outside the UK" → form VAT1 online. Time-to-complete: 60–120 minutes at first attempt. After submission you receive a reference number, followed by email correspondence from HMRC.
Step 4: Processing time and VAT number
Standard HMRC SLA for NETP: 30 working days. In practice: 4–8 weeks, and with complex KYC (multiple owners, holding structure) up to 12 weeks. HMRC may ask for additional documents (proof of identity, business activity, bank statements). The UK VAT number in the format GB + 9 digits arrives by email (Effective Registration Notice) and by letter to the correspondence address.
Step 5: GB EORI plus PVA setup
The GB EORI is assigned automatically after UK VAT (usually within 3 working days, format GB + VAT + 000). Activate PVA (Postponed VAT Accounting) via Government Gateway: Business Tax Account → VAT → "apply for postponed VAT accounting". From that point on, 20% import VAT goes onto your return instead of being paid in cash at the border. Details: Postponed VAT Accounting PVA UK.
Step 6: Making Tax Digital plus first return
UK VAT equals MTD (Making Tax Digital) — mandatory since 2022 for all registered businesses. Connect MTD-compliant software (Xero, QuickBooks Online, Anna, FreeAgent — full list on gov.uk) to the HMRC API. Quarterly returns, payment deadline: end of quarter plus 1 month plus 7 days. Payment by GBP transfer (HMRC details available in Government Gateway).
What happens if you ignore it — real HMRC calculations
HMRC does not treat NETP lightly. Enforcement works on three levels:
| Sanction | Rate | Legal basis |
|---|---|---|
| Backdated VAT | 20% of turnover from the effective date onwards | VAT Act 1994 s. 73 |
| Failure to notify penalty | up to 100% of VAT due (minimum 30%) | Schedule 41 Finance Act 2008 |
| Interest | BoE base rate plus 2.5% per year | Finance Act 2009 s. 101 |
| Late registration surcharge | £400–£1,500 fixed | HMRC Compliance |
A real example from EasyClearance Team practice (figures anonymised): a Polish B2C seller, FBA UK since March 2023. 2023 turnover £180,000, 2024 turnover £260,000. HMRC letter arrived in January 2026. Settlement:
- Backdated VAT (B2B reverse-charge scope plus B2C output VAT): £76,000
- Penalty at 60% (HMRC classed it as "careless, not deliberate"): £45,600
- Interest (22 months, averaging 6.75%): £9,100
- Total liability: £130,700
For comparison — compliance cost from day one (registration £300, quarterly £150 × 8 = £1,200, software £600) totals £2,100 over the same period. A 62-fold gap against the "stay under the radar" approach.
How HMRC detects unregistered NETPs
The myth goes: "HMRC has its hands full, let them chase the big fish." The reality is that since 2021 the process has been fully automated. HMRC's data sources include:
- Marketplace data sharing — Amazon, eBay, Etsy, Wayfair and Temu report monthly to HMRC on overseas sellers holding UK stock. Legal basis: Finance Act 2018 Schedule 5 (joint and several liability rules).
- Customs declarations — every CDS declaration for imported goods carries an EORI. HMRC cross-checks the EORI against the VAT register; a mismatch generates an alert.
- 3PL reporting — large UK fulfilment providers report overseas clients for compliance reasons (fiscal representation rules).
- Bank flow — UK banks flag transactions linked to economic activity carried out in the UK for foreign entities.
HMRC statistics (2024): 18,000 "notice of liability to register" letters issued to overseas sellers, of which 14,000 concerned Amazon FBA sellers. Collection success rate: around 87%.
What it costs — the EasyClearance Team model
EasyClearance does not run UK VAT accounting (that is the job of a VAT adviser or bookkeeper), but we assist at the stage where VAT meets customs clearance: GB EORI, PVA setup, CDS declarations with correct input VAT treatment. Our model is per-declaration, not retainer-based.
| Service | Cost | Notes |
|---|---|---|
| UK VAT registration (DIY on gov.uk) | £0 | Self-service, 60–120 minutes |
| UK VAT registration (with PL/UK VAT adviser) | £250–£500 | Full assistance plus KYC |
| MTD software | £10–£30/month | Anna, FreeAgent, Xero |
| Quarterly bookkeeping plus return | £80–£250/quarter | Depends on volume |
| CDS declaration with PVA (EasyClearance) | from £55 per declaration | Per-declaration, no retainer |
| GB EORI setup | £0 | Automatic after UK VAT |
| Typical annual compliance cost (typical seller) | ~£600–£1,500 | Vs. £40,000–£130,000 backdate exposure |
Hold stock in the UK (FBA, 3PL, own warehouse) and need a customs broker for clearance with PVA?
WhatsApp: +44 7404 091 503 · email: biuro@easyclearance.pl
EasyClearance Team files CDS declarations with PVA within 24 hours — per-declaration, no monthly retainer.
FAQ — 7 most common questions
Do I need to register for UK VAT if I hold stock in Amazon FBA UK but have not sold anything yet?
Yes. The NETP rule in HMRC Notice 700/1 section 9 is unambiguous: a seller without a UK establishment who holds goods in the UK with the intention of selling must register for UK VAT — threshold £0, regardless of turnover. The obligation arises on first pallet receipt at the FBA fulfilment house, not on first sale.
Does the £85,000 (or £90,000) threshold still apply to me when I store stock in the UK?
No. The threshold applies only to UK-established businesses — companies with a place of business, office or fixed establishment in the UK. For non-established sellers (a Polish company with no UK entity), the threshold is £0 from the moment stock is held in the UK. This is the most common Polish-seller mistake — waiting until turnover approaches the threshold while HMRC accrues unpaid VAT and penalty.
Does Amazon report my UK stock to HMRC?
Yes, since January 2021. Amazon, eBay, Etsy and other marketplaces are obliged to share non-established seller data with HMRC — UK stock volume, value, turnover. HMRC cross-references this with the VAT register and issues registration notices automatically. The "under the radar" strategy does not work.
What are the consequences of ignoring the registration duty?
Three layers of penalty. Backdated VAT — HMRC charges 20% on all prior turnover. Penalty — up to 100% of VAT due (failure to notify). Interest — BoE base rate plus 2.5%. Example: an FBA seller with £300,000 turnover over two years without VAT faces roughly £130,000 of total liability.
Does storing stock in a 3PL (non-Amazon) also force registration?
Yes — the NETP rule does not distinguish by warehouse type. Amazon FBA, 3PL (Huboo, ShipBob, Whistl), leased UK warehouse, stock at a partner — the mere holding of goods with intent to sell creates the obligation. Exceptions: pure transit or special customs procedures (IPR, bonded warehouse).
What if I sell only B2C through a marketplace (Amazon, eBay) that collects VAT on my behalf?
You still need UK VAT. The marketplace collects 20% VAT on B2C sales to UK customers, but you still file a return with 0% output VAT (the marketplace has accounted for it) plus input VAT from imports (PVA). Without UK VAT you cannot recover import VAT — 20% of every pallet's value is lost. See also The £135 limit in UK e-commerce VAT.
How much does registering and running UK VAT as an NETP cost?
DIY registration on gov.uk: £0. Registration with an adviser: £250–£500. Quarterly compliance: £80–£250 per quarter. MTD software: £10–£30 per month. Total annual compliance cost: around £600–£1,500. Against backdate plus 100% penalty risk — the calculation is trivial.
Where to go next
- IOR pillar: Importer of Record UK — what it is
- FBA specifics: Amazon FBA UK — duty, VAT, guide
- £135 limit: £135 limit in UK e-commerce VAT
- GB EORI: EORI number — how to get one, when to use it
- PVA: Postponed VAT Accounting PVA UK