Selling on the B&Q Marketplace: Invoicing, UK VAT and Bulk Invoicing

Your role as a marketplace seller

On the marketplace you list your own range, at your own prices, from your own stock. B&Q provides the platform, the traffic and the trust that comes with an established high-street brand. What it does not provide is your sales invoices.

Legally you are the one selling to the customer. That means you issue the invoice under your own trading name and registration details, and you account for the tax on that sale.

Keep two document flows separate
• Your sales invoice to the customer: you create it.
• The platform's commission invoices to you: those belong on the purchase side of your books, not the sales side.

Mixing the two is one of the most common bookkeeping errors in marketplace selling, and it produces a turnover figure that is simply wrong. See our guide to making an invoice for the fundamentals.

When do you need to issue an invoice?

Business customers
Trade buyers expect a VAT invoice, and in the DIY category they are a substantial share of the audience: builders, electricians, plumbers, landscapers and property managers all buy through retail channels. If you are VAT registered, a VAT-registered business customer is entitled to a VAT invoice.

Consumers
An invoice is not always strictly required for a retail sale, but customers regularly ask for one, particularly on higher-value items where they need proof of purchase for a warranty claim or an insurance policy.

The practical approach is the same one that works on every marketplace: generate an invoice automatically for every order. You then never have to work out after the fact whether a particular buyer needed one.

What belongs on the invoice
• Your business name, address and VAT registration number.
• The customer's name and address, plus their VAT number where relevant.
• A unique, sequential invoice number and the invoice date.
• A clear description and quantity of the goods supplied.
• The amount excluding tax, the rate and amount of tax, and the total.
• Any special wording, such as a reverse charge note where it applies.

See our complete checklist of required invoice information.

UK VAT on DIY products

The standard rate
Tools, building materials, garden products, bathroom and lighting items are charged at the UK standard rate of 20%. The reduced and zero rates that exist in UK VAT law mostly relate to specific construction services and certain energy-saving installations, not to the retail sale of goods through an online store.

If you are established in the UK
You charge UK VAT at 20% on your marketplace sales in the normal way, report it on your VAT return and keep digital records in line with Making Tax Digital requirements.

If you are established outside the UK
This is where it gets more involved. Since Brexit, goods sent from the EU to a UK customer are imports, not intra-EU distance sales, so there is no OSS return covering them.
• For consignments valued at or below £135, VAT is generally accounted for at the point of sale, and online marketplaces are typically responsible for collecting and accounting for it.
• Above £135, import VAT and any customs duty apply at the border, paid by the importer of record. Who that is depends on the incoterms you agree.

In practice this means the invoice you issue for a UK sale may look different from the one you issue for a Dutch or German sale, and it is worth confirming the treatment with your accountant before your first UK order rather than after your hundredth. For the EU side of the picture, see our guide to EU distance selling thresholds.

DIY specifics: delivery charges, part shipments and returns

Home improvement products are rarely small. Timber, paving, sanitaryware and flat-pack garden buildings ship in multiple parcels, sometimes from different locations and rarely all at once.

Delivery charges
These normally follow the tax treatment of the main goods. Show them as a separate line on the invoice; on bulky items the amounts are significant and transparency saves you customer queries.

Part shipments
Where an order ships in stages, you can invoice each delivery for the goods actually supplied, referencing the overall order. Each partial invoice takes its own unique number from your sequence.

Returns
Every return should generate a credit note that references the original invoice and corrects both the amount and the tax. For partial returns, credit only the lines that came back. See our credit note guide.

Automate credit notes in the same system as your invoices. Automating one and doing the other by hand is the fastest route to a return that never makes it into your figures.

B&Q alongside Amazon, bol.com, Shopify and WooCommerce

Very few DIY suppliers sell through a single channel. The usual mix is an own-brand store on Shopify or WooCommerce, Amazon for reach, bol.com for the Netherlands and Belgium, and specialist retail marketplaces such as B&Q for the home improvement audience.

Every channel exports orders in its own format, with its own order numbers and, increasingly, its own destination country. Without a central process you end up reconciling four spreadsheets a week, and duplicate invoice numbers become a question of when rather than if.

What to centralise
• One continuous invoice number sequence across every channel, with the platform order number carried as a reference.
• Tax logic driven by destination and customer type, never by the sales channel.
• Revenue tracked per country, so thresholds never surprise you.
• One accounting export in UBL or CSV for everything. See our guide to multichannel bookkeeping automation.

If you also run your own store, see how to handle Shopify invoice automation or compare the WooCommerce invoice plugins.

Invoicing every channel in one batch

Bulk invoicing means turning a whole set of orders into invoices in a single operation rather than one at a time. Past a few dozen orders a month it is the difference between fifteen minutes and half a working day.

How the process runs
1. Orders arrive from B&Q, Amazon, bol.com, Shopify or WooCommerce.
2. Each order gets the correct tax treatment based on destination and customer type.
3. Every invoice takes a unique number from one shared, continuous sequence.
4. Part shipments become partial invoices; returns become credit notes.
5. You export the lot as UBL or CSV into your accounting system.

For channels without a direct integration, the same process works through order file import and invoice export. Same result, one extra step.

Conclusion

The B&Q marketplace gives DIY suppliers access to a large UK audience already in project mode. Commercially it is a straightforward addition; administratively it stays straightforward only if your invoicing is channel- and country-agnostic.

The essentials: you are the seller of record, so you issue the invoice. UK VAT on DIY goods is 20%. If you sell into the UK from outside it, check the import position carefully, especially the £135 consignment rule and who accounts for the VAT.

Set up one continuous number sequence, tax logic driven by destination and customer type, and bulk invoicing across every channel. Then adding a marketplace stays a commercial decision rather than an administrative project.