The UK left the EU customs union and single market on 1 January 2021. Five years on, the regulatory framework is stable but the practical admin still trips up businesses every week. Postponed VAT accounting (PVA), customs declarations, and the underlying rules on origin, valuation, and classification are now part of normal business life for anyone moving goods across the UK border. We are still seeing first-time importers and exporters bring problems to us that were avoidable with the right setup.
Postponed VAT accounting: the cash flow saver
Before Brexit, import VAT on goods from outside the EU was payable at the border or via a deferment account. From 1 January 2021, postponed VAT accounting (PVA) became available for all imports into Great Britain regardless of origin. Under PVA, an import VAT-registered business does not pay import VAT at the border. Instead, it accounts for the import VAT on its next VAT return as both output and input tax, with the two cancelling out for a fully recoverable business.
The cash flow benefit is substantial. Before PVA, importers might wait weeks between paying VAT at the port and recovering it on the next VAT return. PVA removes that working capital cost entirely. The downside is that businesses must actively account for the import VAT, and HMRC publishes Monthly Postponed Import VAT Statements (MPIVS) on the Customs Declaration Service portal showing the amounts to include.
The MPIVS workflow that businesses miss
The MPIVS is the source document for PVA. It lists all imports under your EORI number for the month, broken down by declaration. The output VAT is entered in Box 1 of the VAT return at the standard, reduced, or zero rate as appropriate. The input VAT recovery (subject to normal recovery rules) is entered in Box 4. The net value of imports goes in Box 7.
Common errors include missing the MPIVS download deadline (statements are available for six months only), failing to reconcile MPIVS to internal purchase records, and inadvertently entering the import VAT through both PVA and a duplicate accounts payable invoice. We have unwound several returns where businesses recovered the same import VAT twice.
Customs declarations and the role of the agent
Every commercial movement of goods across the GB border requires a customs declaration. Imports use SAD (Single Administrative Document) data submitted electronically through CDS. Exports require an export declaration too. Most businesses use a customs broker or freight forwarder to file declarations on their behalf, but the legal responsibility for accuracy sits with the importer or exporter of record.
The three pieces of information that drive everything are the commodity code (eight or ten digits from the UK Global Tariff), the customs value (typically transaction value with adjustments), and the origin (where the goods were made or substantially transformed). Each affects the duty rate and any preferential treatment under trade agreements.
EORI numbers and registration
Every business moving goods across the GB border needs an Economic Operator Registration and Identification (EORI) number starting with GB. Movements to or from Northern Ireland require an XI EORI. EORI numbers are issued by HMRC free of charge, but the application can take a few days, which sometimes delays first shipments.
Businesses that import or export from Great Britain to the EU, and businesses moving goods between Great Britain and Northern Ireland, both need active EORI registrations. We still see new clients trying to receive their first shipment without having applied yet.
Deferment accounts and duty
Customs duty is paid in addition to import VAT for goods from countries without a preferential trade arrangement, or where preference is not claimed. Duty rates come from the UK Global Tariff and vary widely by commodity. A duty deferment account lets businesses defer payment of duty (and any import VAT not accounted for under PVA) to the 15th of the following month, again improving cash flow. Setting up a deferment account requires a guarantee, although guarantee waivers are available for many low-risk traders.
The shift from Customs Handling of Import and Export Freight (CHIEF) to the Customs Declaration Service (CDS) is now complete for imports and largely complete for exports. CDS requires more structured data and gives importers better visibility through the trader dashboard, but the learning curve has been real.
Rules of origin under the TCA
The UK/EU Trade and Cooperation Agreement gives zero-tariff, zero-quota access on goods originating in the UK or EU. The catch is proving origin under the rules of origin. Goods that contain non-originating inputs above the permitted threshold lose preferential treatment, and businesses must keep supplier declarations to support claims.
HMRC has run compliance campaigns on origin claims, and businesses that imported under preference without robust evidence have faced retrospective duty bills. The lesson is to build supplier declaration management into procurement, not to retrofit it after a customs query.
How PushDigits supports goods movement
Our VAT team reviews import/export VAT positions, MPIVS reconciliations, and rules of origin claims. Our business advisory team works with growing importers on duty deferment, customs broker selection, and trader registration. We do not file customs declarations ourselves, but we coordinate with the brokers who do.
If you import goods into the UK and have never had a customs review, book a Brexit aftermath check or visit our contact page. Five years in, this is when small errors compound into HMRC enquiries.