How to detect duplicate supplier invoices and avoid double payments
How a Swiss small business spots a supplier invoice received twice before paying it twice: causes, what to compare, checklist and next steps.
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Guides: supplier invoices, VAT and bank details
Short, practical answers to the questions that come up when a small business pays supplier invoices in Switzerland: duplicates, a changed IBAN, VAT rates and the supplier's UID. Each guide names the official sources.
Changed IBAN on a supplier invoice: how to spot invoice fraud in Switzerland
New bank details on a supplier invoice? How to verify a changed IBAN, recognise invoice and CEO fraud in Switzerland and secure your payments.
Read the guideChecking Swiss VAT rates on invoices: 8.1 %, 2.6 %, 3.8 %
Swiss VAT rates since 1.1.2024, how to recalculate VAT and total on a supplier invoice, and what it must contain for the input tax deduction.
Read the guideChecking a supplier's UID and VAT number in Switzerland
How to read CHE-xxx.xxx.xxx MWST, check the UID on uid.admin.ch and see whether a supplier is VAT-registered. Decisive for the input tax deduction.
Read the guideInvoice check