If you sell on Amazon, Shopify, eBay, Etsy or TikTok Shop, invoicing for ecommerce sellers UK is one of those jobs that feels simple until a customer, a wholesale buyer or HMRC actually asks to see one. Many sellers assume the marketplace handles this automatically, only to discover during a VAT inspection or a business customer query that they were responsible for producing a compliant invoice all along.
This guide explains, in plain English, when you legally need to issue an invoice, the difference between a receipt and a proper VAT invoice, how invoicing actually works on each major marketplace, and how getting this wrong can affect your bookkeeping, your VAT return and your relationship with HMRC. Use the quick links below to jump straight to the section you need.
If you have not yet worked out whether you need to register for VAT at all, our guide to VAT for ecommerce sellers UK is a useful companion read, this article assumes you already understand the basics and focuses specifically on invoicing.
Table of Contents
- Why Invoicing for Ecommerce Sellers UK Is a Bigger Issue Than It Looks
- Do You Actually Need to Issue an Invoice for Every Online Sale
- Full VAT Invoices, Simplified VAT Invoices and Receipts Explained
- How Invoicing Works Differently on Amazon, Shopify, eBay, Etsy and TikTok Shop
- Marketplace Facilitator VAT and Why Your Invoice May Not Show Your VAT Number
- Self Billing Arrangements and When They Apply to Ecommerce Sellers
- Invoicing Overseas Customers and Cross Border Sales
- Common Invoicing Mistakes That Cost Ecommerce Sellers Money
- Invoice Records, Making Tax Digital and How Long You Must Keep Them
- How to Automate Invoicing With the Right Bookkeeping Software
- How NS Accounting Helps With Invoicing for Ecommerce Sellers UK
Why Invoicing for Ecommerce Sellers UK Is a Bigger Issue Than It Looks
Invoicing for ecommerce sellers UK sits right at the point where sales data, VAT compliance and bookkeeping all meet. Every invoice or receipt you issue, or fail to issue, feeds directly into your VAT return, your Self Assessment or Corporation Tax figures, and the accuracy of your management accounts. Get it wrong and the mistakes tend to multiply, because a missing or incorrect invoice usually means a missing or incorrect bookkeeping entry too.
For an Amazon, Shopify, eBay, Etsy or TikTok Shop seller, this is more complicated than it sounds, because you are often selling hundreds or thousands of low value orders a month across several platforms at once, each with its own rules about what it will and will not generate on your behalf. Our bookkeeping service exists precisely because this reconciliation work is so easy to get wrong when it is left to spreadsheets.
Do You Actually Need to Issue an Invoice for Every Online Sale
The honest answer is that it depends on who is buying, whether you are VAT registered, and which platform the sale happened on. Understanding this is the starting point for invoicing for ecommerce sellers UK.
Selling to consumers (B2C)
If you are not VAT registered, you are not legally required to issue a formal invoice for a consumer sale, although a simple receipt or order confirmation is good practice and is what most customers expect. If you are VAT registered, you generally do not have to give every consumer a full VAT invoice unless they ask for one, but you must still keep proper records of the sale for your own VAT return.
Selling to other businesses (B2B and wholesale)
If you sell to another VAT registered business, whether through Amazon Business, a wholesale enquiry, or a Shopify B2B storefront, you are legally required to provide a proper VAT invoice, usually within 30 days of the sale. Many ecommerce sellers only discover this rule the first time a business customer chases them for one.
If you are not VAT registered
Below the £90,000 VAT registration threshold, you cannot charge VAT and should never issue anything that looks like a VAT invoice. A simple sales receipt showing what was sold, the price paid and the date is sufficient, and it still needs to be kept for your own Self Assessment or Corporation Tax records. Our Self Assessment service can help you keep this side of things straightforward as a sole trader.
Full VAT Invoices, Simplified VAT Invoices and Receipts Explained
Once you are VAT registered, invoicing for ecommerce sellers UK means understanding three different documents, not just one.
A simplified VAT invoice can be issued for retail supplies of £250 or less, including VAT, and needs to show your business name and address, your VAT registration number, the date of the sale, a description of the goods, and the rate of VAT charged together with the total price including VAT.
A full VAT invoice is required for most B2B sales, for any sale over £250 to a VAT registered customer, or whenever a business customer asks for one. It must include a unique invoice number, your business name and address, your VAT number, the invoice date, the customer’s name and address, a description and quantity of the goods, the net price, the VAT rate and amount, and the total amount payable.
A plain receipt is not a VAT invoice at all. It is simply proof of purchase for a consumer, and on its own it cannot be used by a business customer to reclaim VAT. Confusing a receipt with a VAT invoice is one of the most common problems we see when reviewing a new ecommerce client’s records through our VAT service.
How Invoicing Works Differently on Amazon, Shopify, eBay, Etsy and TikTok Shop
One of the most searched questions we hear is whether the marketplace itself takes care of invoicing for ecommerce sellers UK. The honest answer is that every platform behaves differently, and policies do change, so it is always worth checking your own seller settings alongside this guide.
Amazon
Amazon can generate VAT invoices automatically for buyers if you are enrolled in Amazon’s VAT calculation service or sell through Amazon Business, but plenty of sellers are not set up this way. Amazon Business buyers often expect an invoice quickly, so if your account is not generating them automatically, you need a fast, reliable process for producing one yourself. Amazon also issues its own invoices to you for referral fees, FBA fees and subscription charges, which are just as important for your bookkeeping as the invoices you send to customers.
Shopify
Shopify sends order confirmation emails, but these are not automatically compliant VAT invoices. If you run your own Shopify store and sell to VAT registered businesses, or simply want to issue proper invoices as standard, you will usually need an invoicing app or a manual process layered on top of Shopify’s native checkout.
eBay
eBay provides order details and payment confirmations, but a full VAT invoice is still generally your responsibility to produce on request, particularly for business buyers or higher value sales.
Etsy
Etsy issues receipts to buyers, which are fine for most consumer transactions, but if you are VAT registered and a customer asks for a proper VAT invoice, Etsy’s standard receipt will not usually satisfy that request on its own.
TikTok Shop
TikTok Shop is the newest of the major marketplaces for UK sellers, and its invoicing tools are still developing. As with the others, treat any automatically generated order confirmation as a receipt rather than a guaranteed VAT invoice until you have confirmed otherwise.
If you sell across several of these platforms at once, our expert ecommerce accountants page explains how we help sellers bring all of this together into one clean set of records.
Marketplace Facilitator VAT and Why Your Invoice May Not Show Your VAT Number
Since 2021, marketplaces such as Amazon, eBay, Etsy and TikTok Shop have been treated as the deemed supplier for VAT in two specific situations, when an overseas seller sells stock that is already in the UK to a UK customer, and when goods valued at £135 or less are imported and sold through the marketplace. In both cases, the marketplace charges and accounts for the VAT itself, which means the invoice or receipt the customer receives will show the marketplace’s VAT number rather than yours.
This trips up plenty of Amazon FBA and TikTok Shop sellers who assume every sale on their account needs their own VAT invoice, when in these specific circumstances it does not. Understanding exactly where your responsibility starts and stops is one of the more technical parts of invoicing for ecommerce sellers UK, and it is exactly the kind of detail our specialist tax advice team reviews for clients selling across multiple channels.
Self Billing Arrangements and When They Apply to Ecommerce Sellers
Self billing is a formal HMRC arrangement where the customer, rather than the supplier, prepares the invoice and sends a copy to the supplier along with payment. It requires a written agreement between both parties and specific conditions to be met before it can be used for VAT purposes, and it is one of the less common areas of invoicing for ecommerce sellers UK.
For most direct to consumer ecommerce sellers, self billing rarely applies. It becomes more relevant if you supply stock in bulk to a large retailer, wholesaler or private label partner who insists on raising the paperwork themselves, or where a marketplace issues its own tax documents to you for fees it has charged you, which works on a similar principle in reverse. If you are unsure whether an arrangement you have been offered qualifies as proper self billing, it is worth checking with an accountant before agreeing to it, since getting it wrong can cause VAT return errors on both sides.
Invoicing Overseas Customers and Cross Border Sales
Once your Amazon, Shopify, eBay, Etsy or TikTok Shop store starts selling to customers outside the UK, invoicing for ecommerce sellers UK becomes tied up with customs paperwork, import VAT and, in some cases, VAT registrations in other countries. What you need to show on an invoice for an overseas customer can differ from a UK sale, particularly around whether VAT is charged at all.
These rules depend heavily on where your stock is held and how it is shipped, so this is genuinely an area worth getting specialist advice on rather than guessing. Our guide to international selling for ecommerce sellers UK covers customs, import VAT and cross border tax in more depth, and our CFO service supports sellers who are planning international growth and need this built into their pricing and paperwork from day one.
Common Invoicing Mistakes That Cost Ecommerce Sellers Money
We regularly see the same mistakes in invoicing for ecommerce sellers UK when we review a new client’s records, including the following.
- Assuming the marketplace has issued a proper VAT invoice when it has actually only sent an order confirmation or receipt.
- Charging VAT on an invoice before actually being VAT registered, or forgetting to add it after registration.
- Missing the details a full VAT invoice legally needs, such as a unique invoice number or the customer’s business name and address.
- Not keeping a copy of every invoice issued and received, which then causes problems when reconciling payouts and fees.
- Treating self billing documents from a wholesale customer as ordinary sales invoices, without checking they meet HMRC’s conditions.
- Ignoring invoices for marketplace fees, which still need to be recorded correctly for your bookkeeping and VAT return.
Each of these is straightforward to avoid with the right process in place, and considerably more stressful to fix once HMRC has already raised a query. Our guide to common ecommerce accounting mistakes covers the wider bookkeeping errors that tend to sit alongside poor invoicing.
Invoice Records, Making Tax Digital and How Long You Must Keep Them
Good record keeping is at the heart of invoicing for ecommerce sellers UK. If you are VAT registered, you must keep copies of every invoice you issue and receive for six years, and Making Tax Digital for VAT means these records need to be held digitally rather than in a shoebox of printed receipts. This has applied to every VAT registered business since April 2022, whatever your turnover.
Making Tax Digital for Income Tax is also being introduced in stages for sole traders and landlords, and it will eventually change how self employed ecommerce sellers below the VAT threshold need to keep records too. Our guide to Making Tax Digital for ecommerce sellers explains exactly what is changing and when, so you are not caught out as the rules extend down to smaller sellers.
Good invoicing habits and digital record keeping go hand in hand. If your invoices are scattered across marketplace dashboards, email inboxes and payment app receipts, you are already behind on what Making Tax Digital expects, and this is exactly the gap our ecommerce bookkeeping service closes for clients.
How to Automate Invoicing With the Right Bookkeeping Software
Manually raising invoices for every Amazon, Shopify, eBay, Etsy or TikTok Shop order is not realistic once you are selling any real volume. The sellers who stay on top of invoicing for ecommerce sellers UK almost always do so through software, not spreadsheets.
Tools such as Xero, QuickBooks, A2X and Link My Books can pull orders, fees and refunds directly from your marketplaces and turn them into properly categorised bookkeeping entries, with invoicing built in for direct website sales through Shopify. Our guide to accounting software for ecommerce sellers compares these options in detail and explains which combination tends to suit which type of seller.
Automating this properly also feeds straight into cleaner reconciliation. If your invoices, payouts and fees do not currently line up each month, our guide to payout reconciliation for ecommerce sellers is a good next read.
How NS Accounting Helps With Invoicing for Ecommerce Sellers UK
Getting invoicing for ecommerce sellers UK right protects your VAT position, keeps business customers happy, and stops small paperwork gaps turning into HMRC problems later. At NS Accounting, we work daily with Amazon, Shopify, eBay, Etsy and TikTok Shop sellers to set up compliant invoicing, connect it to proper bookkeeping software, and keep everything ready for VAT returns, Self Assessment or Corporation Tax.
We also support ecommerce sellers with VAT registration and returns, company formation as you move from sole trader to limited company, and wider ecommerce, influencer and content creator accounting. If you are still weighing up the cost of professional support, our guides on how to choose an ecommerce accountant and ecommerce accountant fees are worth reading first, and our article on limited companies for ecommerce sellers covers the wider reporting picture once you incorporate.
Whichever platform you sell on, and however messy your current invoicing setup feels, it can be tidied up. Book a free consultation with our team today and we will show you exactly what needs to change.
