Full compliance with Revenu Québec Tax Rounding Rules

🔍 Problem Statement

Pelcro's tax calculation does not fully comply with Revenu Québec rounding rules, which require tax to be calculated per line item before summing — not on the subtotal. This causes small discrepancies on invoices that can trigger compliance issues for Québec-based clients.

💡 User Story

As a Québec-based Pelcro client, I want tax rounding to comply with Revenu Québec rules (per-line-item calculation), so that invoices are accurate and compliant without manual corrections.

🎯 Definition of Done (DoD)

A feature is done when:

✔️ Given a Québec-based account with applicable tax rates, when an invoice is generated with multiple line items, then tax is calculated per line item and rounded before summing — matching Revenu Québec requirements exactly.