Vertex-Style Enterprise Indirect Tax Determination for Business Central

Key Features

Complex multi-jurisdiction determination — origin/destination, nexus and registration logic resolved per document line, not per posting group

Use tax and excise tax support beyond native VAT/GST, including self-assessment and accrual postings

O-Series-style cloud rate engine integration over the BC REST/OData API, with an in-engine fallback rate table

Configurable product taxability matrix (table + page extensions) mapping items, item categories and customers to tax treatments

High-volume posting performance via batched determination and a job-queue retry path for failed external lookups

AL event subscribers (OnAfterValidate, OnBeforePostDocument) that augment — never replace — native VAT entry posting

Results written back to native VAT entries so standard VAT statements, audit trails and reports stay authoritative

Per-line determination detail with full audit log: which jurisdiction, rate, source (engine/cloud) and timestamp

Dedicated permission sets separating tax configuration, override and read-only review roles

API pages and Dataverse-friendly exposure for Power Platform / Power BI tax dashboards and integrations

Exemption-certificate and reverse-charge handling, including EU intra-community and domestic reverse charge

Per-tenant private extension packaging — scoped, versioned and upgradeable without touching the base application

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Dynamics 365 Business Central.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

Microsoft Dynamics 365 Business Central ships with a capable but deliberately simple VAT/tax-posting-group model. For companies trading across many jurisdictions, that model breaks down: nexus-driven use tax, excise duties, product- and customer-specific taxability, and per-line origin/destination logic are not something the native posting groups were built to express.

Vertex-Style Enterprise Indirect Tax Determination is a per-tenant AL extension that ECOSIRE builds, installs and supports directly on your Business Central environment (Online or on-prem). It is not an instant AppSource download — it is engineered to your jurisdictions, products and integration target, then deployed as a private extension scoped to your tenant.

The extension layers a determination engine over native posting: AL event subscribers on sales, purchase and journal documents (OnAfterValidate, OnBeforePostDocument) intercept each line, resolve the correct jurisdiction stack via a configurable product taxability matrix, and either calculate rates in-engine or call an external O-Series-style cloud rate service over the BC REST/OData layer. Determination results write back to native VAT entries so standard reporting, VAT statements and audit trails remain intact.

Table and page extensions add the taxability matrix, jurisdiction registers, use/excise rules and per-line determination detail. Dedicated permission sets, a job-queue retry path for high-volume batch posting, and Dataverse-friendly API pages round out the build. ECOSIRE delivers source, documentation, a deployed extension and a support window — you own a tax engine fitted to your business, not a one-size-fits-all listing.

What you get

A per-tenant AL extension (.app) built for your jurisdictions and installed on your Business Central environment (Online or on-prem)

Complete AL source code: table/page extensions, codeunits, event subscribers, permission sets and API pages

Configured product taxability matrix and jurisdiction registers seeded with your tax treatments

Integration to your chosen O-Series-style cloud rate engine, or a maintained in-engine rate table if no external service is used

Job-queue setup for high-volume batch determination plus retry handling for external lookup failures

Technical and admin documentation: configuration guide, permission-set map, and rate-engine connection runbook

Deployment to sandbox first, validation against sample transactions, then promotion to production

A defined post-launch support window with bug fixes and a BC monthly/major-release compatibility check

Who this is for

Multi-jurisdiction Finance Controller

Owns VAT/GST/use-tax accuracy across several countries or US states and needs determination that native posting groups can't express, without losing standard BC reporting.

BC Solution Architect / IT Lead

Wants tax logic delivered as a clean per-tenant extension with source, permission sets and API pages — not unmanaged customizations baked into the base app.

Tax & Compliance Manager

Needs a defensible audit trail per line, exemption-certificate and reverse-charge handling, and a documented rate source for every transaction.

How Vertex-Style Enterprise Indirect Tax Determination for Business Central Compares

Criterion	ECOSIRE	Custom Build	Competitor
Complex multi-jurisdiction determination (use/excise, nexus, origin/destination)	Included	Partial support	Partial support
Delivered as a clean, versioned per-tenant AL extension with source	Included	Partial support	Not included
O-Series-style cloud rate engine integration over BC REST/OData	Included	Partial support	Included
Fitted to your products, jurisdictions and taxability matrix	Included	Included	Not included
High-volume posting performance with job-queue retry path	Included	Partial support	Partial support
Writes back to native VAT entries (reporting/audit intact)	Included	Partial support	Partial support
Installed and supported on your environment by the builder	Included	Not included	Partial support
Dedicated permission sets + Dataverse/Power Platform API pages	Included	Partial support	Partial support

Frequently Asked Questions about Vertex-Style Enterprise Indirect Tax Determination for Business Central

How long does delivery take, and is this an AppSource app I download?

No — this is build-to-order. ECOSIRE engineers the extension to your jurisdictions, products and rate-engine target, then installs it as a private per-tenant extension on your Business Central environment. There is no instant AppSource download. Typical delivery is roughly 3–6 weeks depending on the number of jurisdictions, whether you connect an external cloud rate engine, and the complexity of your taxability matrix. We deploy to a sandbox first, validate against your sample transactions, then promote to production.

What ongoing support and updates are included?

The one-time build includes a defined post-launch support window covering bug fixes and a compatibility check against Business Central's monthly and major releases, since base-app changes can affect event subscribers and API pages. Rate-table maintenance, new jurisdictions, or new integrations after the window are handled under a separate support agreement. Because you receive the full AL source, you are never locked out of your own extension.

Will this break native VAT/GST reporting or the audit trail?

No. The engine augments rather than replaces native posting. Event subscribers resolve the correct treatment per line and write results back to standard VAT entries, so VAT statements, audit reports and the GL stay authoritative. Each determination is logged with jurisdiction, rate, source and timestamp for traceability.

Can it call an external cloud tax engine, or does it calculate rates itself?

Both are supported. It can integrate an O-Series-style cloud rate engine over the BC REST/OData API for live, maintained rates, and it keeps an in-engine fallback rate table. A job-queue retry path handles transient external-lookup failures so high-volume posting isn't blocked by a slow or unavailable rate service.

Does it work with Power BI and the Power Platform?

Yes. The build includes API pages and Dataverse-friendly exposure so per-line determination data can feed Power BI tax dashboards or Power Automate flows. Dedicated permission sets keep configuration, override and read-only review access separated for governance.