GCC Withholding Tax (WHT) Engine

Name: GCC Withholding Tax (WHT) Engine
Brand: ECOSIRE
SKU: gcc-withholding-tax

主な機能

Configurable WHT rate masters (wht.category) per income type — services, royalties, rent, technical fees, dividends and cross-border payments — each with its own rate, tax-authority code and effective dates

Automatic WHT computation on vendor bills (account.move) using @api.depends compute methods that derive the withheld amount and the net amount payable to the vendor

Deduction applied at payment time (account.payment) as well as at bill confirmation, so partial payments withhold proportionally and reconciliation stays clean

Threshold handling — withholding only triggers once cumulative vendor or category spend crosses a configurable minimum, matching real regulatory thresholds

Exemption management per vendor, per category and per date range (treaty relief, exemption certificates, zero-rated vendors) with reason codes captured for audit

Vendor WHT certificate generation as branded QWeb PDF reports, numbered and linked to the exact source journal entries and payments

Dedicated WHT-payable liability ledger — every deduction posts to a configured payable account through standard Odoo journal entries, never outside the general ledger

WHT liability and reconciliation reports showing amounts withheld, certified, remitted and outstanding per period, per category and per tax authority

Multi-company and multi-currency aware — withholding computed in the payment currency with correct rate application and rounding rules per company

Security via ir.model.access.csv plus record rules so only Accounting / Finance roles can define categories, run certificates or adjust withheld amounts

Automated actions that flag vendor bills crossing a threshold or missing a certificate, surfacing them to accountants before period close

XML-RPC / JSON-RPC access to WHT categories, lines and certificate data for integration with external tax-filing or reporting tools

Chatter and audit logging on every withholding line and certificate for a full, traceable history

Configurable rounding and net-vs-gross treatment to match how your jurisdiction expects WHT presented on the bill

受注生産、すべておまかせ

自分での設定は不要 — ECOSIRE が構築・インストール・サポートする実働アプリです。

ご注文

一回限りの構築料金から始めます。キックオフで一緒に範囲を決めます。

構築とインストール

ECOSIRE がお客様の Odoo 上で構築・設定・インストールします。

本番稼働 + サポート

約2〜4週間で稼働し、リリース後のサポート期間が付きます。

この製品について

The GCC Withholding Tax (WHT) Engine is a build-to-order Odoo 17/18/19 module that ECOSIRE designs, develops, installs and supports for your finance team. It brings withholding-tax obligations that Odoo core simply does not handle out of the box into your Accounting workflow: configurable rate masters per WHT category, automatic deduction at vendor-bill and payment time, vendor certificate generation, and a dedicated WHT-payable liability ledger you can reconcile and remit to the tax authority.

Withholding tax in the GCC, wider MENA and many African and South-Asian jurisdictions is a structural gap in standard Odoo. Native account.tax handles VAT-style taxes that add to an invoice line, but WHT is fundamentally different — it is deducted from what you pay the vendor and it creates a liability you owe the government. Bolting that logic onto core tax objects with spreadsheets and manual journal entries is slow, error-prone and impossible to audit at scale. This module solves it properly at the ORM level.

Because this is engineered specifically for your regime, ECOSIRE grounds the build in your actual withholding rules: your rate categories (services, royalties, rent, technical fees, dividends, cross-border payments), your thresholds and exemptions, your certificate format, and the ledger and reporting shape your accountants and auditors expect. We ship real Odoo — a proper module with __manifest__.py, models.Model classes, @api.depends computed fields, ir.model.access.csv plus record rules, XML/OWL views, and QWeb PDF certificates — not brittle Studio patches.

This is not an existing apps.odoo.com download and there is no instant download. After purchase, ECOSIRE scopes your specific WHT rules, builds and installs the module on your Odoo 17, 18 or 19 instance (Community or Enterprise), migrates or configures your data, trains your team, and supports you through a defined warranty window. Typical delivery is 2 to 4 weeks depending on the number of categories, jurisdictions and certificate formats in scope.

Technically, the engine introduces a wht.category master (rate, tax authority code, thresholds, exemption logic, income type), a wht.tax.line that ties each withholding to its source account.move / account.payment, and compute methods with @api.depends that derive the net amount payable to the vendor and the amount withheld. Deductions post to a dedicated WHT-payable liability account through Odoo's standard journal-entry engine, so nothing sits outside your general ledger. Automated actions can flag bills that cross a category threshold, and every certificate is a versioned QWeb report tied to the underlying moves for a clean audit trail. XML-RPC / JSON-RPC endpoints let your other systems read WHT figures programmatically.

得られるもの

Complete, installable Odoo module source (models, views, security, QWeb reports) targeting your Odoo 17, 18 or 19 instance — Community or Enterprise

Configured WHT rate masters, thresholds and exemption rules mapped to your specific regime(s) during the scoping workshop

Branded vendor WHT certificate PDF template built as a QWeb report and matched to your regulator's expected format

WHT-payable ledger and reconciliation/liability reports configured against your chart of accounts

Deployment and installation on your instance (or staging then production), including data configuration and smoke testing

Administrator and finance-user documentation plus a recorded or live training session for your accounting team

A defined post-go-live support and warranty window (bug fixes and adjustments) with agreed response times

Source code handover with rights to run and self-host the module on your instance

これは誰のためのものですか

GCC / MENA Finance Manager

Owns vendor payments and tax compliance for a company with withholding obligations. Needs deductions applied automatically, certificates issued to vendors, and a clean liability figure to remit — without manual journals or spreadsheets.

Group Accountant in an Emerging Market

Handles multi-entity, multi-currency payables across jurisdictions with different WHT rates and thresholds. Needs per-category, per-authority reporting that reconciles back to the general ledger for auditors.

Tax / Compliance Officer

Responsible for correct withholding rates, threshold triggers, treaty exemptions and audit-ready evidence. Needs configurable categories, exemption reason codes, and a traceable link from every certificate to its source transactions.

Accounts Payable Clerk

Processes vendor bills and payments daily. Needs the net-payable amount computed correctly on-screen and threshold or missing-certificate flags surfaced before posting, so nothing is caught at period close.

GCC Withholding Tax (WHT) Engine の比較方法

基準	エコシエール	カスタムビルド	競合他社
Withholding deducted from vendor payment (not added to invoice)	Purpose-built at the ORM level on account.move and account.payment	Achievable but you design and maintain all the logic yourself	Sometimes, but rarely modelled correctly for GCC flows
Configurable rate masters per WHT category and jurisdiction	wht.category master tailored to your exact regime	Possible but every rate and rule is bespoke effort	部分的なサポート
Threshold and exemption handling (treaty relief, exempt vendors)	Built to your thresholds and exemption reason codes	部分的なサポート	部分的なサポート
Vendor WHT certificate as branded PDF tied to source moves	QWeb report matched to your regulator's format	Build a QWeb report from scratch yourself	部分的なサポート
Dedicated WHT-payable liability ledger and reconciliation reports	Configured against your chart of accounts, fully in the GL	部分的なサポート	部分的なサポート
Fits Odoo 17/18/19, Community or Enterprise	Targeted to your exact version and edition	Depends entirely on your team's Odoo expertise	部分的なサポート
Tailored to your specific country's WHT rules	Scoped and configured to your regime during the build	Yes, if you invest the analysis and dev time	含まれていない
Supported and maintained by the builder with a warranty	Warranty window plus optional support retainer	You own all maintenance forever	部分的なサポート
XML-RPC / JSON-RPC access for external filing tools	Standard framework endpoints, custom exports optional	Build it yourself	部分的なサポート

GCC Withholding Tax (WHT) Engine に関するよくある質問

How long does delivery take and what happens after I buy?

This is a build-to-order module, not an instant download. After purchase, ECOSIRE runs a scoping session to capture your WHT categories, rates, thresholds, exemptions and certificate format, then develops, installs and tests the module on your Odoo instance. Typical delivery is 2 to 4 weeks depending on the number of categories, jurisdictions and certificate formats in scope. You get a schedule with milestones up front.

What support and updates are included?

Every build includes a defined post-go-live warranty window covering bug fixes and configuration adjustments, plus training for your finance team. Beyond the warranty we offer ongoing support and maintenance retainers, including compatibility updates when you upgrade Odoo versions and adjustments when a tax authority changes its WHT rates or certificate rules. We hand over the source so you are never locked out of your own module.

Does this work with Odoo Community, and which versions are supported?

Yes. The module is built on standard framework objects (account.move, account.payment, QWeb, ir.model.access.csv, record rules) and works on both Odoo Community and Enterprise. We support Odoo 17, 18 and 19, and target the specific version your instance runs so the build matches your environment exactly.

Can it handle our specific country's withholding rules and certificate format?

Yes — that is the point of building it to order. During scoping we configure your rate categories (services, royalties, rent, technical fees, dividends, cross-border payments), your threshold and exemption logic, and design the QWeb certificate to match what your regulator and vendors expect. It works across GCC, wider MENA, African and South-Asian regimes; we tailor it to yours rather than shipping a fixed template.

How is the withheld amount posted and reported in accounting?

Withholding posts through Odoo's standard journal-entry engine to a dedicated WHT-payable liability account, so nothing sits outside your general ledger. The vendor receives the net amount, the withheld portion becomes a liability you owe the authority, and the liability/reconciliation reports show amounts withheld, certified, remitted and outstanding per period, category and authority — all reconcilable and audit-ready.

Can other systems read the WHT data?

Yes. WHT categories, withholding lines and certificate data are exposed through Odoo's XML-RPC and JSON-RPC APIs, so external tax-filing, reporting or BI tools can pull the figures programmatically. We can also scope custom endpoints or scheduled exports as part of the build if you need a specific integration.

Why not just use Odoo's native tax feature or an off-the-shelf app?

Native account.tax adds tax to an invoice; WHT deducts from what you pay a vendor and creates a liability you owe the government — a fundamentally different flow that core Odoo does not model. Generic apps.odoo.com modules rarely match GCC/emerging-market thresholds, exemptions and certificate formats, and you cannot get them adapted. A build-to-order module encodes your exact rules and is supported by the team that built it.