What is an e-invoice?
According to ZATCA, an electronic invoice is a tax invoice or a simplified tax invoice that is generated and stored in a structured electronic format through a compliant electronic solution, and the same applies to credit and debit notes. It documents the supply itself: what was sold, to whom, when, at what price, and how much VAT is due. It is important to note that a paper invoice converted into a file by copying, scanning or photographing is not an electronic invoice. An e-invoice must be generated electronically from the start.
What is an e-receipt?
In common use, a receipt is a document proving a payment or a receipt of money: that an amount was paid or received, by what method, and when. Examples include: • The point-of-sale terminal slip after a card payment. • A payment confirmation message from a payment gateway or bank. • A receipt voucher issued by the business when it collects a payment from a customer. These documents prove that money moved, and they matter for reconciliation and accounting, but on their own they do not necessarily contain the elements that the VAT regulations require of an invoice, such as the supplier's VAT number, a description of the goods, and the VAT amount.
The difference at a glance
• Purpose: the invoice documents the supply and the tax; the receipt documents the payment. • Timing: the invoice is tied to the supply and issued within regulatory deadlines; the receipt is tied to the moment of payment. • Content: the invoice includes specific mandatory elements; the receipt focuses on the amount and payment method. • Tax effect: the invoice is the basis of the seller's output tax and the buyer's input deduction; the receipt does not play this role on its own. • E-invoicing requirements: they apply to invoices and to credit and debit notes, including clearance or reporting in phase two.
When does the document handed to a customer count as an invoice?
What matters is the content, not the name printed on the document. The slip a cashier's terminal prints in a retail store and hands to the customer is treated as a simplified tax invoice when: • It is issued from a compliant electronic solution. • It meets the elements of a simplified invoice: date, supplier name, address and VAT number, description of goods, amount, VAT amount or a statement that the price includes it, and the QR code. • It is processed according to phase two requirements if the business is in scope, meaning it is stamped and reported within 24 hours. A payment terminal slip that shows only the amount and the last digits of the card does not replace the invoice, and the business must still issue a simplified invoice and give it to the customer.
Common mistakes from confusing the two
• Relying on the payment terminal slip without issuing an invoice from the sales system. • Issuing a receipt voucher to a business customer instead of a tax invoice, so the customer asks for the invoice later and collection is delayed. • Issuing two invoices for the same transaction, one at order and one at payment, causing duplicated revenue and VAT. • Not linking payments to invoices in the system, so amounts appear in the bank with no clear invoice they belong to. • Handling refunds with a receipt only, without a credit note referencing the original invoice.
How to organise the relationship between invoice and receipt
• Make the invoice the primary document for every sale, whatever the payment method. • Link each payment to its invoice in the system with a single reference number. • For immediate cash sales, print or send the simplified invoice to the customer with the payment slip, or instead of it if it contains the required elements. • For credit sales, issue the tax invoice at the time of supply, then issue a receipt voucher for each payment referencing the invoice. • For returns, issue a credit note referencing the original invoice, then process the refund.
Frequently asked questions
Can the invoice be sent to the customer electronically instead of being printed? Yes, it can be shared electronically, as long as its approved format is preserved and the QR code is visible. Is a receipt voucher subject to e-invoicing requirements? E-invoicing requirements apply to tax invoices, simplified invoices, and credit and debit notes. A receipt voucher remains an important accounting document that must be kept. The customer only asks for a receipt. Is that enough? Issue the invoice in all cases, as it is your legal obligation, and you can give the receipt alongside it. What about advance payments before supply? An advance payment may create a VAT liability under the VAT rules, so review its treatment with your tax adviser and issue the appropriate document.
Conclusion
The invoice proves what you sold and how much tax applies; the receipt proves that you received the money. Your business needs both, linked to each other, so that its sales are documented for tax purposes and reconciled financially. At Shams Solutions, we help businesses prepare their accounting and ERP systems for e-invoicing, from the initial assessment and data cleanup to integration with the FATOORA platform, go-live and ongoing follow-up. Contact us to review your business's setup and agree on the right next steps.