Payment confirmation for advance invoices: Issue receipts correctly

Many Swiss SMEs and freelancers issue an advance invoice, book the incoming payment — and then forget the final step: a proper payment confirmation or receipt for the deposit. It sounds trivial, but it's relevant from an accounting and legal perspective. Without confirmation, disagreements often arise later when issuing the final invoice, misunderstandings with your accountant, or disputes with the customer over the actual amount paid.

Why a payment confirmation for advance invoices is necessary

An advance invoice is a claim, not yet a receipt. Only when the amount actually arrives on your account do you have the legal right to confirm payment as received. Under Swiss law (Swiss Code of Obligations Art. 88), the debtor — your customer — has the right to request a receipt upon receiving a payment. This applies to deposits as well.

In practice, this means: as soon as an advance payment arrives in your account, you should actively provide the customer with a payment confirmation. Failing to do so carries risks:

• Uncertainty on the customer's side about outstanding amounts
• VAT reporting issues if documentation is missing
• Disputes over credited amounts when issuing the final invoice
• Difficulties with dunning if subsequent instalments are not paid

What a payment confirmation for a deposit must contain

Switzerland has no legally prescribed form for payment confirmations. Nevertheless, the following details should always be included:

Item	Example
Label "Payment Confirmation" or "Receipt"	clearly visible in the header
Date of payment confirmation	14 August 2026
Reference to the advance invoice	Invoice No. AK-2026-047
Confirmed amount (incl./excl. VAT)	CHF 2'500.00 incl. 8.1% VAT
VAT amount separately	CHF 187.20 VAT
Name and address of both parties	Client and service provider
Payment date (value date on account)	10 August 2026
Your VAT number (if VAT-liable)	CHE-123.456.789 VAT
Note on remaining balance (optional, but helpful)	Outstanding balance CHF 4'500.00

The note about the remaining balance is not mandatory, but it creates transparency and prevents later misunderstandings — especially for projects with multiple tranches.

Payment confirmation vs. receipt: What's the difference?

In Swiss usage, both terms are often used interchangeably. Technically, a receipt is a document issued by the creditor to the debtor after receiving payment (Swiss Code of Obligations Art. 88 Para. 1). A payment confirmation is the same document, often in digital form, such as a PDF sent by email. For accounting purposes, both are equivalent as long as the content is complete.

Important: The payment confirmation is not a substitute for the original advance invoice. Both documents remain in the file — the invoice as proof of the claim, the confirmation as proof of payment.

VAT: What to watch out for in the payment confirmation

If you're VAT-liable, you need to watch the tax rate. The payment confirmation carries the same rate as the corresponding advance invoice. In Switzerland, for 2026, these are depending on the service:

• 8.1% for most services and goods
• 3.8% for accommodation services
• 2.6% for food, books, certain medicines

VAT is generally settled on the basis of agreed or received consideration (the accrual or cash method). If you settle by the cash method (when cash is received), the tax liability only arises with actual receipt of funds — precisely when you issue the payment confirmation. For a detailed overview of which method applies to you, see our guide on Swiss VAT basics 2026 — rates, duties and special rules.

Practical workflow: From payment receipt to confirmation

Step 1: Verify payment receipt

Check in your online banking that the amount has correctly arrived in your account — including the value date. Some customers deduct amounts without consultation; you should clarify this before issuing confirmation.

Step 2: Create the document

Create the payment confirmation with a reference to the invoice number. If you create invoices using the SnapBill app, you can manage advance invoices directly in the system and issue the payment confirmation as a separate document without breaking your numbering logic.

Step 3: Deliver and file

Send the confirmation by email (PDF) or post. File the document in both your own records and the customer file. In Switzerland, there is a 10-year retention requirement for accounting documents.

Step 4: Record the entry

Book the receipt as a received deposit (usually account 2030 or similar, depending on your chart of accounts). The counter-entry to the receivables account closes the advance invoice booking.

Common mistakes to avoid

• Confirming too early: Only confirm after the amount has actually arrived in your account, not after receiving the customer's payment order.
• Stating the wrong amount: If the customer transferred with a deduction, clarify the difference explicitly — don't issue a confirmation for an amount that didn't actually arrive.
• Omitting VAT: The VAT portion must be shown on payment confirmations too if you're VAT-liable.
• Not archiving the document: Missing documents can lead to corrections during a VAT audit.

At a glance

• A payment confirmation (receipt) for advance invoices is anchored in Swiss law — your customer has a statutory right to it.
• The document contains: reference to the advance invoice, confirmed amount, VAT breakdown, payment date, both parties, your VAT number.
• Only issue the confirmation once the amount has actually arrived in your account.
• Archive both documents — the advance invoice and payment confirmation — for at least 10 years.
• With the VAT cash method, tax liability arises with receipt of payment; the confirmation is thus also VAT-relevant evidence.

If you want to systematically reduce the effort for payment confirmations, create a reusable template document. Our Swiss invoice template — all required fields in one place article shows which fields are generally mandatory for Swiss documents — many of them apply to payment confirmations as well.