A per-tenant Business Central AL extension that automates withholding tax rate determination, calculation on payments and invoices, certificate generation and statutory WHT return preparation across multiple countries — built, deployed and supported by ECOSIRE. One-time license from $299.00 USD for Dynamics 365 BC (build-to-order) — includes 12 months of updates and support.

A per-tenant Business Central AL extension that automates withholding tax rate determination, calculation on payments and invoices, certificate generation and statutory WHT return preparation across multiple countries — built, deployed and supported by ECOSIRE.
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Microsoft Dynamics 365 Business Central has no built-in, country-aware withholding tax engine outside a handful of localizations, so most tax teams manage WHT in spreadsheets and post manual journals — error-prone and audit-unfriendly. This extension fixes that.
Configurable WHT rate table keyed by country, vendor, nature-of-payment code and amount threshold, editable from a dedicated BC setup page
Auto-calculation of withholding tax on purchase invoices, credit memos and payment journal lines via posting event subscribers — no manual journals
Posts WHT to a dedicated G/L account with a traceable WHT ledger entry linked back to the source document
Vendor exemption and reduced-rate handling with effective/expiry dates so exempt vendors are skipped automatically
WHT certificate generation as branded Word/RDLC report layouts, per vendor and per period
Period-end statutory WHT return dataset exportable to Excel/CSV for filing in your jurisdiction's portal
What it is. A custom AL extension built to your exact WHT rules, installed as a per-tenant extension on your Business Central environment (cloud SaaS or on-prem), not a generic AppSource download. ECOSIRE scopes the countries, rates, thresholds and certificate formats you need, builds the extension, deploys it through your admin center / Extension Management, and supports it.
How it works in BC. Table and page extensions add WHT setup to Vendor, Purchase, and Payment Journal pages. Event subscribers on document posting (e.g. OnAfterPostPurchaseDoc, payment application events) auto-calculate the withholding amount, post it to a dedicated G/L account, and write a WHT ledger entry — no manual journals. A configurable rate table keys WHT by country, vendor, nature-of-payment code and threshold, with vendor exemption certificates honored automatically.
Certificates and returns. Generate WHT certificates per vendor/period as Word/RDLC report layouts you can brand, plus period-end statutory return datasets exportable to Excel/CSV for filing. Data is exposed via the BC REST/OData API for Power BI dashboards and Power Automate flows, and a Job Queue entry can prepare period returns on a schedule.
Honest delivery. This is build-to-order. After purchase ECOSIRE confirms requirements, builds against your localization, installs on a sandbox for UAT, then promotes to production with a permission set and handover docs.
Owns withholding tax obligations across one or more countries and currently reconciles WHT in spreadsheets. Wants calculation, certificates and returns to happen inside Business Central with a clear audit trail.
Responsible for accurate G/L postings and statutory filings. Needs WHT posted to the right accounts automatically, vendor exemptions respected, and period-end returns reproducible for auditors.
Manages the Business Central tenant, extensions and permission sets. Prefers a supported per-tenant extension installed cleanly through the admin center over fragile in-house AL code.
ecosire.com でライセンスを購入し、アカウント ダッシュボードから Withholding Tax (WHT) Management for Business Central モジュールの ZIP をダウンロードします。
ZIP をサーバー上の Odoo カスタム アドオン フォルダーに抽出します (または、[アプリ] > [Odoo.sh / runbot のファイルからインストール] を介してアップロードします)。
開発者モードをアクティブにし、アプリを開き、「アプリリストの更新」をクリックして、「Withholding Tax (WHT) Management for Business Central」を検索し、「インストール」を押します。
新しいメニューを開き、ECOSIRE ライセンス キーを貼り付け、外部認証情報 (Shopify、Amazon、Stripe など) を接続して保存します。
組み込みの接続テストを実行し、最初の 10 レコードを同期し、定期的な cron をスケジュールします。何か問題が発生した場合はサポートにお問い合わせください。
| 基準 | エコシエール | カスタムビルド | 競合他社 | オドゥー ネイティブ |
|---|---|---|---|---|
| Country-aware WHT rate/threshold engine inside BC | ||||
| Auto-calculation on posting (no manual journals) | ||||
| Branded WHT certificate generation | ||||
| Statutory WHT return preparation/export | ||||
| Vendor exemption / reduced-rate handling | ||||
| Built and tailored to your exact jurisdictions | ||||
| Installed per-tenant and supported for you | ||||
| REST/OData + Power Platform integration |
No. It is built to order. ECOSIRE develops the extension against your specific countries, rates, certificate formats and Business Central localization, installs it as a per-tenant extension on your environment, and supports it. It is not a one-click AppSource install.
Typical lead time is about 2 to 4 weeks after requirements are confirmed, depending on the number of countries, certificate templates and the complexity of your exemption rules. We agree a firm timeline during scoping, deploy to a sandbox for UAT first, then promote to production.
Each build includes a warranty window for defect fixes. Beyond that, ECOSIRE offers a support plan covering rate/threshold updates, certificate or return-format changes, compatibility with Business Central's twice-yearly major releases, and adding new countries as your obligations grow.
Yes. It is delivered as a standard AL extension and works on Business Central online (cloud SaaS) and supported on-premises versions. On cloud it installs through the BC admin center / Extension Management; on-prem we deploy the .app to your service tier.
Yes. WHT ledger entries are exposed through the Business Central REST/OData API, so you can build Power BI reports, trigger Power Automate flows, or feed Dataverse. A Job Queue entry can also prepare period returns and certificate batches on a schedule.
The extension includes recalculation and reversal routines. When a source invoice or payment is corrected or cancelled, the related WHT ledger entries are reversed or adjusted so your G/L and certificates stay accurate and reconcilable.
A per-tenant Business Central AL extension that automates withholding tax rate determination, calculation on payments and invoices, certificate generation and statutory WHT return preparation across multiple countries — built, deployed and supported by ECOSIRE.