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First Time Guides

There are dozens of articles online comparing sole trader and limited company structures. Almost none of them deal specifically with what changes when you're importing or exporting goods — and some things do change. This article focuses on the import/export-specific factors: EORI registration, VAT timing, liability on customs decisions, and the practical realities of dealing with overseas suppliers.

It won't tell you what to do — that's your accountant's job — but it will tell you what questions to ask.

The basic difference — briefly

As a sole trader, you and the business are the same legal entity. Income is taxed as personal income through self-assessment. There is no separation between personal and business liability.

A limited company is a separate legal entity. The company pays corporation tax on profits. You pay income tax on salary and dividends you take from it. There is more administrative overhead: annual accounts, confirmation statements, Companies House filing. That's the framework — now for the parts that actually differ when you're moving goods across borders.

Where import/export changes the calculation

Five factors that are specific to import/export businesses — and that most general comparisons don't cover.

1. EORI registration and the cost of switching

Both sole traders and limited companies can register for an EORI number — there is no structural requirement to be a limited company to import or export commercially. However, your EORI is registered to the legal entity that holds it.

If you start as a sole trader and later incorporate, you will need a new EORI number for the limited company. That means updating your EORI with every supplier and freight forwarder you work with, re-registering with HMRC's customs systems, and potentially pausing imports while the new EORI is processed — usually a few days, but worth avoiding if you can. If you know you are likely to incorporate within 12 months, doing so before you start importing is worth considering rather than after.

2. VAT registration timing

Import/export businesses often reach the VAT registration threshold (currently £90,000 turnover) faster than service businesses — because high-volume product turnover can mean significant revenue even at modest margins. The interaction of VAT registration with import/export is worth understanding early.

VAT-registered businesses can use Postponed VAT Accounting (PVA), which means import VAT is accounted for on your VAT return rather than paid upfront at the border. For businesses importing regularly, this is a meaningful cash flow benefit. Sole traders and limited companies can both use PVA — but the cash flow benefit at scale interacts differently with the two structures' tax positions. This is worth discussing with your accountant before you hit the threshold rather than after.

3. Personal liability on customs decisions

This is the factor most people don't think about until they need to. If HMRC audits your imports and determines that you have been using the wrong commodity code — paying a lower duty rate than you should — the liability for underpaid duty falls on the importer of record. For sole traders, that is you personally. For limited companies, the liability falls on the company first.

The practical protection this offers is real but limited: HMRC can pursue directors personally in cases of deliberate evasion. For honest mistakes, the limited company structure does provide a layer of separation. For businesses importing high volumes of goods in categories where commodity code classification is genuinely complex — electronics, clothing, food products — this is worth factoring in.

4. Supplier and counterparty perception

This is anecdotal but consistent: some overseas suppliers — particularly larger Chinese factories, established EU distributors, and US counterparties — have an implicit preference for dealing with limited companies. It signals permanence, professionalism, and a degree of capitalisation.

For very early-stage importers placing small trial orders, this rarely matters. For businesses trying to establish longer-term supplier relationships, negotiate better payment terms, or access trade credit, a limited company registration can help — particularly combined with a business bank account in the company name. This is not a reason on its own to incorporate; it is one factor among several.

5. Trade finance and growth capital

If you are planning to grow an import business to meaningful scale, you will eventually need working capital — either to fund the gap between paying suppliers and receiving customer payment, or to hold stock at scale. Banks and trade finance providers are significantly more comfortable lending to limited companies than sole traders. Invoice finance, stock finance, and trade credit facilities are all more accessible to incorporated entities. If external financing is part of your growth plan, incorporating earlier makes practical sense.

When sole trader is the right call

The profile where sole trader status genuinely makes sense: you are testing whether the import or export activity is viable before committing. You are operating at small volumes — say, below £50,000 of goods per year. You have a single supplier country and a simple product line. The business is a side activity alongside employment. You have not yet hit the VAT threshold and do not expect to for at least a year.

Sole trader status is not a mark of being less serious — it is the appropriate structure for early-stage and lower-volume activity. The administrative simplicity means you spend less time on compliance and more on the actual business.

When a limited company is worth the admin

Again, be concrete about the profile: your import or export volumes are meaningful enough that an HMRC customs audit or duty reclassification would significantly affect you. You are sourcing from multiple countries with different duty and origin rules. You are planning to take on staff, seek investment, or sell the business. You are importing regulated goods where liability exposure is higher. You are building a brand that you want to separate from your personal identity.

The admin overhead of a limited company — typically £500–£1,500 per year in accountancy fees for a small trading company — is worth it when the business has enough scale to justify it.

Switching from one to the other

Most importers who outgrow sole trader structure make the switch when they are approaching or exceeding the VAT registration threshold, or when their accountant indicates that the tax efficiency of a limited company starts to outweigh the admin cost.

The practical steps involve incorporating a new company at Companies House, opening a business bank account, re-registering with HMRC for the new entity (including a new EORI), and updating all supplier and freight forwarder records. It is a few weeks of admin rather than a complex undertaking. The main thing to avoid is switching mid-year in a way that creates two sets of accounts — if you can time the switch to the start of a new tax year, it is simpler.

What you must do regardless of structure

Neither structure makes HMRC compliance optional. Both sole traders and limited companies need: accurate commodity codes on all import and export documentation, proper commercial invoices and packing lists for every shipment, records kept for a minimum of four years (six for VAT records), and correct duty and VAT payments. The structure determines who is liable and how; it does not change what is required. See the full UK trade compliance checklist for what that looks like in practice.

The honest bottom line

For most first-time importers and exporters: start as a sole trader if you are testing the activity; incorporate when the business outgrows you. If your first question is "do I need a limited company to start importing?" — the answer is no. Your EORI number, commodity codes, freight forwarder, and understanding of landed costs matter far more to your first shipment than your legal structure.

Get those right first. The first-time importer guide and first-time exporter guide cover what that actually involves.