SIMPL-TVA EDI return from Sage 100 (SIMPL-IS, SIMPL-IR coming)
Your Moroccan tax obligations handled from the same application as your operations.
The work it replaces
Every deadline brings the same reconstruction: extract purchases, extract sales, isolate the rates, check the pro rata, pick up the adjustments, assemble the deduction statement, verify that everything balances.
The work is long, it happens under calendar pressure, and mistakes are expensive.
What the module covers
The OptiFlowPro VAT module builds your return directly from your Sage entries.
The deduction statement. Purchases for the period, split by rate, with identification of non-deductible and partly deductible invoices.
Output VAT. Sales for the period, split by rate, handling receipts for companies on either the invoice or the cash accounting basis.
The checks. Before any filing, the module cross-checks totals, flags discrepancies and inconsistent documents. You correct beforehand, not afterwards.
The filing file. The file required for submission is generated from the application.
Closing. Once filed, the period is closed and archived. Entries for that period can no longer drift without leaving a trace.
The DGI SIMPL e-services
In Morocco, tax returns are filed by EDI on the SIMPL e-services of the Direction Générale des Impôts: SIMPL-TVA for value-added tax, SIMPL-IS for corporate income tax, SIMPL-IR for personal income tax. Today the module generates the EDI file expected by SIMPL-TVA from your Sage entries. SIMPL-IS and SIMPL-IR are the next modules on the roadmap: they will start from the same Sage data and the same closed period, with no re-keying from one e-service to the next.
Withholding tax
Since 1 July 2026, Moroccan VAT withholding also applies to services rendered by companies, where the payer is a credit institution, an insurer, or a business above the turnover threshold set by the finance act. That threshold drops in 2027 and again in 2028. Two modules answer the obligation.
OptiRAS computes and applies the withholding on your purchase documents: VAT withheld at the configured rate — 75% where the supplier holds a valid tax compliance certificate, 100% otherwise — and corporate income tax withheld on the net amount. The withholding lines are written into the Sage document. Running the operation again recomputes on the correct base instead of withholding twice.
OptiARF holds your suppliers’ tax compliance certificates and verifies them against the DGI. That check is what moves the rate from 75% to 100%: holding the PDF is not enough, authenticity has to be established, and the certificate must be less than six months old.
The tax counterparty register carries withholding in both directions: what you withhold from suppliers, and what your customers withhold from you.
One useful clarification
The module produces statements and files from your Sage data. It does not replace your accountant and does not warrant the compliance of your returns: approval remains yours.
Formats and tax obligations change. We track those changes in product updates, and we recommend confirming each deadline with your adviser.
What you need to use it
The VAT return module is included in the Premium plan. It is available as an option on the Essential and Business plans.