Demo files for the Claude × Excel course — Vibe Coding Academy

Every business, name, phone number, e-mail and ID number in these files is fictional.
The numbers were built for learning only. Do not use them as the basis for real reporting.
VAT rate in the example: 18%. Rent from a private landlord carries no VAT (an assumption of the example).

clients.csv — clients and payment terms
invoices-h1-2026.csv — invoices January–June 2026
expenses-h1-2026.csv — expenses January–June 2026
budget-h1-2026.csv — monthly budget by category
bank-export-raw-q2-2026.csv — a deliberately messy bank export to clean
clients-personal-data-demo.csv — fictional personal data to practise anonymizing
ai-summary-to-check.csv — a summary an "AI" prepared, with planted mistakes to catch