Fintech Articles — Berkanium

Fintech Feb 26, 2026 5 min read

Turkish e-Invoicing with .NET: Integrating Hızlı Teknoloji e-Connect

e-Fatura vs e-Arşiv, SOAP clients that behave in modern .NET, UBL-TR mapping without tears, the status lifecycle, cancellation rules and a go-live checklist from real ERP integrations.

Fintech Jan 14, 2026 5 min read

DSFinV-K Exports with fiskaly: Cash Point Closings Done Right

The export a German tax auditor actually asks for: master data setup, asynchronous cash point closing ingestion with its validation gotchas, and one-click TAR exports from your admin panel.

Fintech Jan 12, 2026 4 min read

fiskaly SUBMIT DE: Automating §146a Cash Register Declarations to ELSTER

Germany now requires declaring every electronic cash register to the tax office. How to automate the whole pipeline — taxpayer, establishments, clients, XML validation and ERiC transmission — with the SUBMIT DE API.

Fintech Jan 9, 2026 5 min read

fiskaly SIGN DE: Implementing a Cloud TSE for German KassenSichV Compliance

A backend developer's walkthrough of Germany's cloud TSE: TSS lifecycle automation, client registration per BSI TR-03153, transaction signing with offline queueing, and audit-ready TAR exports.