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Fiscalization API Integration for ERP, POS & SaaS Platforms

A fiscalization API connects your invoicing software to a country's tax authority for real-time invoice reporting. We design and build these integrations end to end — certificate handling, offline queueing, per-country adapters — for Albania. One engineering team in Tirana, fluent in the region's tax regimes.

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What is a fiscalization API?

A fiscalization API is the software interface between your invoicing system — an ERP, a point of sale, an e-commerce checkout or a SaaS billing module — and a government tax platform. Instead of printing from a certified fiscal device, your software signs each invoice digitally and transmits it to the tax authority (or a certified intermediary) at the moment of issue. The authority validates it and returns a fiscal identifier that must appear on the document, usually together with a verification QR code. Countries implement this differently — some clear the invoice before it reaches the customer, others require near-real-time reporting after issue — but the engineering building blocks are the same everywhere.

  • Digital signing of every invoice with a government-issued or qualified certificate
  • Real-time or near-real-time transmission to the tax authority's endpoint
  • Fiscal identifiers and verification QR codes returned and printed on the document
  • Structured invoice formats: UBL 2.1, UN/CEFACT and national XML/JSON schemas
  • Mandatory electronic archival, typically 5–10 years, with audit-ready logs

What a production-grade fiscalization integration needs

The happy path — build the XML, POST it, print the code — is a week of work. What separates a compliant production system from a demo is everything around that path. Tax authority endpoints go down; your customers keep selling. Certificates expire mid-season. A duplicate submission can mean a duplicate tax liability. We engineer for the failure modes first:

  • Certificate lifecycle management: provisioning, secure key storage, rotation and expiry alerts
  • Offline mode and store-and-forward queues, with the legally-required flags for late transmission
  • Idempotent submissions and reconciliation, so retries never create duplicate fiscal documents
  • Schema validation before transmission, with per-country rule sets kept current as regulations change
  • Long-term archival, monitoring and alerting designed for tax-audit scrutiny

FAQ

Frequently Asked Questions

  • What is a fiscalization API?
    A fiscalization API is the interface that connects invoicing software (ERP, POS, e-commerce or SaaS billing) to a government tax platform, so each invoice is digitally signed, transmitted and validated in real time. The tax authority returns a fiscal identifier and usually a QR code that must appear on the document.
  • Can you add fiscalization to our existing ERP, POS or SaaS product?
    Yes — that is our core engagement. We integrate a fiscalization layer into your existing codebase rather than replacing your stack, starting with a fixed-scope compliance assessment that maps your invoice flows to the target country's requirements.
  • How long does a fiscalization API integration take?
    A single-country integration into an existing product typically takes 4–10 weeks end to end, including certificate setup, tax-authority test environments and certification. Multi-country rollouts add per-country adapters on a shared layer, which is significantly faster than the first integration.
  • What happens if the tax authority's system is down?
    Every serious regime defines an offline procedure: invoices are issued with an offline flag, queued locally and transmitted when the service recovers, within a legally defined window. We build store-and-forward queues, idempotent retries and reconciliation into every integration so sales never stop and nothing is double-reported.
  • Do you sell a fiscalization API as a product, or build custom integrations?
    We build custom integrations that your team owns — no per-invoice fees and no dependency on a third-party SaaS. Where a certified intermediary is mandatory in a given country, we integrate against it on your behalf.

Related

Fiscalization API Integration for ERP, POS & SaaS Platforms

A fiscalization API connects your invoicing software to a country's tax authority for real-time invoice reporting. We design and build these integrations end to end — certificate handling, offline queueing, per-country adapters — for Albania. One engineering team in Tirana, fluent in the region's tax regimes.

Start your projectGet a free estimate