Software does not determine the correct VAT treatment by itself. The business must first understand its registration status, reporting method, taxable activities, exemptions, cross-border transactions and evidence requirements.
Design the VAT structure
Confirm the VAT number, filing frequency and method, then map the tax rates required for domestic sales, reduced-rate items, exports, imports, reverse-charge situations and transactions outside the scope. Apply defaults carefully to the chart of accounts, invoice items and recurring entries.
Control the source documents
Each transaction should retain sufficient support for the selected treatment. Review supplier invoices, customer location, service or goods classification, import documents and foreign-currency conversion. Exceptions should be identified before the reporting deadline.
Reconcile before preparing the return
Reconcile the VAT control accounts to the detailed tax reports and investigate manual journals, unusual rates and prior-period entries. Lock reviewed periods and retain the calculation and supporting reports used for the filed return.
| Control | Purpose |
|---|---|
| Tax-rate review | Confirm that codes reflect the underlying transaction and current Swiss rules. |
| Evidence check | Support exports, imports, reverse charge and exempt or out-of-scope treatment. |
| Control-account reconciliation | Explain the difference between ledger balances, reports, payments and refunds. |
| Period lock | Reduce the risk of changes after the return has been reviewed or filed. |