Customs Value and DDP in the UK — 2 Mistakes That Most Often Wreck Your Margin

With DDP shipments to the UK, two mistakes come up exceptionally often: a company doesn't understand what actually goes into the customs value, and then assumes DDP "handles it" with no risk to the margin. In practice, this is exactly where it's easiest to end up with a gap between the commercial offer, the documents and the real cost of the operation.

This article sets out the topic at an operational level: what customs value means, where DDP complicates responsibility, and what to check before the pricing stops adding up.

Mistake 1: treating the customs value as just the invoice figure

Under HMRC's UK guidance, the customs value under the transaction value method isn't just a single figure taken from the commercial document. Official GOV.UK material makes clear that you need to look at the price paid or payable for the goods, plus the relevant elements that can affect the value used for customs purposes.

If a company relies solely on "the value in the quote", without checking the whole delivery model, it can end up misjudging the cost of importing on the UK side.

Mistake 2: using DDP without full control over the process

Under DDP, the exporter, or the party arranging the sale, takes on greater responsibility for seeing the shipment through to completion. That means the issue isn't just about the invoice or the customs duty itself, but also about who is responsible for the import clearance, what data is needed, and whether the commercial model has actually been costed properly at all.

What to check before offering DDP

• whether you have the correct description of the goods and the right tariff code,
• whether the commercial model genuinely places responsibility for the import on the UK side,
• whether the cost of delivery, clearance and further obligations has been calculated using correct data,
• whether the commercial documents and the operational plan are consistent with each other.

Why this kills margin

Usually it's not one big mistake, but several small assumptions that were never checked before the sale. An incorrect value, badly assigned responsibility and document verification done too late mean the margin disappears already at the transport stage.

Also see the video

This video complements the topic well from a commercial perspective and shows where, with DDP, it's easiest to lose control of cost and responsibility.

Frequently asked questions

Does DDP always mean the seller takes on the whole problem?
Operationally, DDP increases the scope of responsibility, but simply using that Incoterm, without properly set-up documents and roles, doesn't solve the problem on its own.

Is the customs value always exactly the invoice amount?
No. Official HMRC guidance shows that valuation needs to take account of a wider set of elements linked to the transaction.

When is the best time to check DDP and customs value?
Before the quote is sent to the customer and before transport is arranged — not only once the documents are already in place.

Official sources

• GOV.UK: Customs valuation - Method 1 - Transaction value
• GOV.UK: How to value goods for import VAT

If you want to sort out your documents more broadly

For teams that want to work through the whole set of documents and data before exporting to the UK, this is also a good companion piece: PL-UK export documentation — a complete checklist.

Related guides

• DDP or DAP when exporting to the UK
• The commercial invoice for the UK — 8 mistakes
• Exporting to the UK — who's really responsible for clearance and documents

Summary

If DDP is going to work without eating into your margin, the customs value and responsibility issues need to be settled before the sale and before shipping. If you'd like to work through this on a specific case, get in touch with us.