Qatari companies running Odoo hit a wall the moment tax rules move faster than the software. Odoo core ships generic accounting but has no maintained Qatar localization package the way it does for KSA or the UAE — no GTA-aligned chart of accounts, no ready fiscal positions for standard, zero-rated and exempt supplies, no withholding-tax handling for payments to non-resident suppliers, and no bilingual Arabic/English tax invoice that satisfies GCC framework expectations. Finance teams end up hand-building tax codes, patching invoice layouts, and reconciling returns in spreadsheets — fragile work that breaks every time the General Tax Authority (GTA) publishes new guidance.

ECOSIRE builds a dedicated Qatar tax-compliance module that closes that gap. We ship a localized account.chart.template with a Qatar-aligned account hierarchy, a full set of account.tax records (standard-rate, zero-rate, exempt, out-of-scope) with correct tax grids, and account.fiscal.position records that auto-remap taxes and accounts by partner type — domestic, GCC, and rest-of-world. A configuration wizard (a transient models.TransientModel) walks the accountant through applying the template to a company so setup is repeatable across multi-company groups. Everything is packaged as a proper Odoo app with an __manifest__.py, ir.model.access.csv access rules and record rules scoping data per company_id.

On top of the fiscal foundation we build the reporting and document layer. Withholding tax on cross-border payments is modeled with fields on the payment/vendor-bill flow and compute methods using @api.depends to derive the retained amount and post the correct journal entries automatically. A GTA return template maps your tax grids to the periodic filing structure and renders as a QWeb report you can review, export and archive; an automated action (base automation) can flag periods that are ready to file. Bilingual Arabic/English invoices are delivered as inheriting QWeb templates with RTL-aware layout so the same document carries both languages side by side — no separate print flow.

Because tax law is a moving target, the module is designed to be maintainable rather than a one-off hack: tax rates, grid mappings and the return structure live in data and configuration you can adjust, and the whole thing is reachable over Odoo's XML-RPC/JSON-RPC API so external filing tools or a group parent system can read return figures programmatically. It runs on Odoo Community or Enterprise (Enterprise adds the accounting dashboard and follow-ups; the localization logic itself is Community-compatible) and is built and tested against Odoo 17.0, 18.0 and 19.0.

This is a build-to-order engagement, not an instant download. After you request a quotation we run a short scoping call to confirm your Odoo version, Community vs Enterprise, entity structure and the exact GTA outputs you need, then we build, test on a staging copy, and install. Typical delivery is 2–4 weeks from confirmed scope. You receive the installable source for your version, documentation, a training session and a post-go-live support window — and because GTA guidance is still evolving, we treat that as an ongoing relationship rather than a hand-off.