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Accounting and invoicing for marketplace sellers

Selling through marketplaces, payouts every two weeks, fees, returns and goods in the platform’s warehouse: marketplace traders have lots of data and a billing logic of their own. Saldiqo imports orders via CSV, records fees and payouts and writes invoices for business customers.

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What comes up for marketplace sellers

Payouts with deductions

The marketplace pays out in bundles and deducts fees, returns and ad costs.

Goods in someone else’s warehouse

The goods sit in the platform’s warehouse. Stock and purchase price have to be traceable.

Business customers

Some buyers require an invoice with tax shown.

How Saldiqo helps

  • CSV import of ordersRead in orders and create invoices.
  • Match payoutsUpload the bank statement.
  • Record fees and advertisingAs an expense per cost centre.
  • Record purchasesSupplier invoices with due dates.

Typical invoice lines

Examples that often appear on invoices in this industry. You set the prices yourself.

  • Items as per order
  • Shipping as per order
  • Platform fee as per statement
  • Credit note: return
  • Ad costs as per receipt
  • Purchase of goods as per supplier invoice

Tax and invoicing in the UK

What applies to invoices in the UK, in short. As of October 2026.

VAT
Standard rate 20 %, reduced rate 5 % and zero rate 0 %. Saldiqo calculates each invoice line with the rate you pick.
VAT registration
You must register once your taxable turnover passes £90,000 over any 12 months, or you expect to pass it within the next 30 days. You can deregister below £88,000. Until you are registered, your invoices show no VAT, and Saldiqo adds up your 12-month turnover for you.
What goes on an invoice
If you are VAT registered: your VAT number, the tax point, unit prices and the VAT total in pounds. A limited company shows its registered name on every invoice, and its company number, registered office and part of the UK on letters, order forms and the website.
E-invoicing
There is no mandate today. From April 2029 e-invoicing is planned for all B2B and B2G sales that carry VAT, through Peppol. The exact date and standard are not yet in law, and the government’s roadmap follows with the Budget on 28 October 2026.
VAT returns
VAT returns go to HMRC through Making Tax Digital, usually quarterly, due one month and seven days after the period. Saldiqo shows sales and VAT per rate and exports CSV. It does not submit to HMRC, and for Making Tax Digital you need software recognised by HMRC.
Record keeping
Keep VAT records for 6 years.
Late payment
Statutory interest on late business payments is the Bank Rate (3.75 % in the second half of 2026) plus 8 points, so 11.75 %. On top comes fixed compensation of £40, £70 or £100, depending on the amount owed (under £1,000, from £1,000, from £10,000). Consumers have no statutory interest.
Getting paid
Your sort code and account number are on every invoice. Customers pay by Faster Payments or Bacs, and banks check the account name with Confirmation of Payee. There is no QR standard in the UK.

Frequently asked questions

How do I import orders?

You upload an order file as CSV. Saldiqo has a template and presets.

How do I treat fees and payouts?

You record fees as an expense, and match the payout to sales through the bank statement.

Do marketplace sellers in the UK have to charge VAT?

Only once they are VAT registered. Registration is required when taxable turnover passes £90,000 over any 12 months, or is expected to within the next 30 days. Below that you may register voluntarily. If you are not registered, you must not show VAT on your invoices.

Do marketplace sellers in the UK need e-invoicing?

Not today. A mandate for B2B and B2G sales with VAT is planned from April 2029, and the details were still open as of October 2026. You can keep sending PDF invoices for now.

How long should marketplace sellers keep invoices?

Keep VAT records for 6 years. You can store receipts digitally in Saldiqo. The legal duty to keep records stays with you.

Try Saldiqo for free

Write invoices, match payments, collect receipts and send reminders: free and without a trial period.

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As of October 2026. General information, not legal or tax advice, without guarantee. For your case ask your tax adviser.