Tax Technology, E-Invoicing & Compliance Engineering

Tax Technology & E-Invoicing Engineering

We build the software behind tax obligations: e-invoicing platforms, Peppol and PINT implementations, compliance rule engines, ERP extraction pipelines and regulatory reporting. We built and operate InvoFuse, a multi-tenant e-invoicing platform targeting Peppol PINT-AE — so this is engineering we have shipped, not a practice area we are describing.

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The E-Invoicing Readiness Audit

A one- to two-week, fixed-scope review that runs your real invoice data against the rule set you will be measured on — before anyone commits to a build. You get the gap list whether or not you hire us to close it.

Who it is for: companies with a mandate deadline and invoice data that still lives in an ERP or a spreadsheet.

What we need from you: a sample invoice extract, your tax and unit-of-measure code lists, the ERP in question, and an owner for a walkthrough.

Pricing depends on: number of source systems, document types in scope, regimes in scope, and whether master data is already clean.

Discuss a Readiness Audit
  • Your invoices scored against the applicable rule set
  • Missing fields and identifiers listed explicitly
  • Tax and unit-of-measure mapping gaps
  • Volume and failure-handling assessment
  • Fixed price, quoted after a short scoping call

Who we help

Companies facing a mandateA country has announced e-invoicing and your invoices currently leave the building as PDFs. The deadline is real and the data is not ready.
Tax & finance technology teamsDetermination, reporting and filing logic that has outgrown spreadsheets and ERP customisations nobody wants to touch.
ERP ownersNetSuite, SAP, Dynamics, Odoo or an in-house system that must now emit structured, validated documents on a schedule.
Accounting & advisory firmsClient-facing compliance work that is still manual, and a client base that will all hit the same deadline.
Software vendorsA product that needs e-invoicing, tax determination or regulatory reporting built into it without becoming a tax company.
Multi-entity groupsSeveral legal entities, several ERPs and several regimes, each wanting its own isolation, mappings and audit trail.

End to end

From the ERP record to the document a regulator accepts.

The format is the last five percent. Everything before it is data engineering, mapping and failure handling.

E-invoicing platformsIngest invoices from source systems, validate them against the applicable rule set, and produce the structured document the regime expects.
Peppol & PINT implementationsUBL generation against Peppol BIS and country PINT specifications, including the identifiers and registration fields source systems rarely carry.
Compliance rule enginesPresence, arithmetic and code-list rules evaluated per document, with a readable reason for every failure instead of a schema error.
ERP data extractionPipelines that pull invoices, tax codes and master data out of the systems of record on a schedule, idempotently.
Tax & UOM mappingMapping layers between an ERP’s own tax codes and units of measure and the code lists a regime mandates — owned and editable by the finance team.
Tax determination logicRate, place-of-supply and treatment logic implemented as testable code with a recorded decision, not as a nest of ERP conditions.
Regulatory reportingPeriodic returns, listings and transaction-level reports assembled from the same validated data the invoices came from.
Access point integrationConnecting to the service providers and access points that transmit documents, with retries, acknowledgements and status tracking.
Multi-tenant architectureIsolation designed in layers when one platform serves many entities or many clients, so a single mistake is not a disclosure.
Archival & audit trailsImmutable document storage, change history and the evidence an auditor asks for years after the invoice was sent.
Volume & queueingMonth-end bursts handled off the request path, with checkpointed jobs that resume rather than restart.
Migration from manual processMoving from exports, templates and email to a pipeline, with a parallel run before anything official depends on it.

Why AsterickLabs

We operate a compliance platform, not just advise on one.

InvoFuse is ours: we made the ingestion asynchronous after it failed on volume, scoped the ingestion keys after a shared secret proved unrevocable, and rewrote the routes that trusted a caller-supplied tenant. The lessons on this page were paid for.

  • We read the specificationRules are grouped by what they actually check — presence, arithmetic, code lists — so the build order follows the spec rather than a vendor’s feature list.
  • Isolation treated as architectureThe same discipline as our HIPAA compliance engineering: layered controls, each independently sufficient.
  • Built for month-end, not for a demoQueued, checkpointed, idempotent processing — because compliance volume arrives all at once and a retry must not duplicate a filing.
  • Engineers, not tax advisorsWe implement the rules your advisors or the specification set, and surface ambiguity instead of resolving it quietly.

Engagement process

  1. 01

    Map the obligation

    Which regime, which document types, which deadline, and which fields it requires that your systems do not currently hold.

  2. 02

    Audit the source data

    Real extracts from the real ERP, scored against the rule set — so the gap is a list of fields and mappings rather than a guess.

  3. 03

    Design the pipeline

    Ingestion, mapping, validation, generation, transmission and archival agreed in writing, including what happens when a document fails.

  4. 04

    Build & validate

    Built incrementally against real invoices, with the rule engine reporting per-document reasons your finance team can read.

  5. 05

    Parallel run & cutover

    The new pipeline runs alongside the existing process until outputs reconcile, then becomes the system of record.

  6. 06

    Operate or hand over

    Monitoring, runbooks and a working session — or we keep running it, if you would rather not own a compliance platform.

Tax technology questions

Tax technology engineering is building and operating the software that carries a company’s tax obligations — e-invoicing pipelines, tax determination logic, regulatory reporting and the integrations between the systems that hold the underlying data. It is software engineering applied to a domain where the output is checked by a regulator rather than only by a user.

Tell us which mandate you are up against.