Every tax authority wants the same numbers in a different shape. Odoo's core Tax Report gives you a solid tax-grid engine, but the return form your accountant actually files — the numbered boxes, the net-payable computation, the jurisdiction-specific layout — is left for you to reconcile by hand in a spreadsheet every period. That reconciliation is where filing errors, missed deadlines and audit exposure creep in.

The Tax Return / VAT Report Builder is a build-to-order Odoo module that ECOSIRE designs, builds, installs and supports specifically for your jurisdictions and your chart of tax. It sits on top of Odoo's native tax-grid mechanism and turns it into a configurable, filing-shaped return. You (or we) define the boxes of your VAT/GST return as data — each box is a configurable line that aggregates one or more Odoo tax grids over a selected period, with signed logic for outputs vs. inputs. The module then computes net VAT payable or refundable, produces a QWeb PDF that mirrors the official return, and lets an auditor click any figure and drill straight down to the posted invoices, bills and journal items behind it.

Because it is built, not bought off the shelf, the box definitions, rounding rules, filing frequency and report layout match exactly what your tax office expects — whether that is a UK-style 9-box return, a GCC VAT return, a GST return with reverse-charge and RCM lines, or a multi-entity consolidated view. No forcing your numbers into someone else's fixed template.

Technically, the module is delivered as a clean Odoo addon with its own __manifest__.py, new models.Model records for return definitions, boxes and computed period results, @api.depends compute methods that read account.move.line tax-grid amounts, ir.model.access.csv plus record rules so only your tax team can lock and file returns, XML/OWL views for configuration and review, a QWeb report for the printable return, and optional automated actions that generate the draft return on a schedule. It targets Odoo 17, 18 and 19 and works with both Community and Enterprise (Community users gain a filing-ready return layer Enterprise localizations often reserve for specific countries).

ECOSIRE hands over the full source, configures your first live period end-to-end, trains your finance team, and backs it with a support and update window — so the first real return you file with it is one you trust.