Profile
Kristijan Sekereš
Knowledge Hub
Articles & Insights
Company FormationUS LLC for Non-Residents: EIN, Form 5472 and a Bank Account
Forming the company is the easy part. The EIN without an SSN, the bank that rejects an agent's address, and the Form 5472 due every year are where founders abroad get stuck.
Tax & Finance SystemsUAE E-Invoicing on 1 July 2027: Getting an In-House ERP Ready for Peppol
What a home-grown or customised ERP has to produce for UAE e-invoicing: PINT-AE fields, credit notes, the five-corner flow, provider integration and a nine-month plan to 1 July 2027.
Tax & Finance SystemsE-Rechnung From 1 January 2027: Issuing Invoices From Your Own Systems
German firms above €800,000 turnover must issue EN 16931 e-invoices from 1 January 2027. What custom billing and ERP systems need to change, and a plan for the last quarter of 2026.
Tax & Finance SystemsVERI*FACTU for Custom Invoicing Software: 2027 Deadline, 2028 Announced
Spanish companies must still invoice from adapted software before 1 January 2027; a move to October 2028 is announced but not yet law. What bespoke systems must build, who signs, and how to plan.
Tax & Finance SystemsFrance E-Invoicing 2027: Connecting Your Own Billing System
From 1 September 2027 French PME issue e-invoices and file e-reporting through an approved platform. What an in-house billing system or custom ERP has to output, and an 11-month plan.
Tax & Finance SystemsBrazil CBS and IBS from 1 January 2027: What In-House ERPs Must Change
PIS and Cofins end and CBS starts on 1 January 2027. What in-house and customised ERPs must change in tax logic, item classification, credits and NF-e and NFS-e output.
Tax & Finance SystemsJapan's 1% Food Consumption Tax: What Has to Change in Your Systems
Japan plans to tax food at 1% from 1 April 2027 to 31 March 2029. What changes in POS, invoices, EDI, ERP and subscription billing, and who must build it.
Tax & Finance SystemsSlovakia's Peppol E-Invoicing Mandate: What Custom ERPs and EDI Flows Need
From 1 January 2027 Slovak VAT payers must issue domestic invoices as Peppol e-invoices, and EDIFACT invoices stop counting. What to build on a custom system, and a 90-day plan.
Tax & Finance SystemsSerbia's eOtpremnica: Connecting Your ERP, WMS and TMS by 1 October 2027
From 1 October 2027, B2B goods movements in Serbia need an electronic delivery note and a receipt confirmation within days. What to build against the Ministry API, and a 12-month plan.
Tax & Finance SystemsOman's Fawtara E-Invoicing in 2027: What Custom ERP and POS Systems Need
Fawtara starts on 1 April 2027 for supplies above OMR 5 million and on 1 October 2027 for everyone else, with one e-invoice per B2C sale. What custom ERP and POS systems must change, and a plan.
Tax & Finance SystemsCzech EET 2.0 From 1 January 2027: What Custom POS Software Has to Do
From 1 January 2027 every in-person sale in Czechia, cash or card, is reported to the tax authority as it happens. What in-house tills, kiosks and payment apps must build, and a 90-day plan.
Platform MigrationsEWS Ends in Exchange Online on 1 April 2027: Moving to Microsoft Graph
Microsoft is switching off Exchange Web Services in Exchange Online, for good on 1 April 2027. What changes this month, how to find your EWS usage, and what a Graph rewrite involves.
Platform MigrationsAzure Cloud Services (Extended Support) Retires 31 March 2027
No extensions and no one-click tool. Where web and worker roles can go, what changes in code (RoleEntryPoint, RoleEnvironment, certificates, startup tasks, Web Forms) and a six-month plan.
Platform MigrationsSAP ECC Maintenance Ends 31 December 2027: A Price Step, Not a Switch-Off
End of mainstream maintenance for SAP ECC is a price step, not a shutdown. What the 2030 and 2033 options involve, and why custom ABAP, interfaces and data decide your real migration date.
Platform MigrationsDrupal 10, Umbraco 13 and Kentico 13 End of Life in December 2026
Three CMS versions lose security support within three weeks. What the moves to Drupal 11, Umbraco 17 and Xperience by Kentico involve, what extended support exists, and how to decide.
Platform MigrationsAtlassian Connect End of Support: Moving Custom Apps to Forge
Connect loses support on 31 January 2027. If your Jira or Confluence app was built in-house or by a partner, nobody else will move it. How to find it, rebuild it on Forge and migrate its data.
EU ComplianceEU Machinery Regulation 2027: What It Asks of Your Machine Software
From 20 January 2027 machines must identify their safety software, record legitimate and illegitimate changes and keep a five-year tracing log. What that means for PLC, HMI and remote access.
PaymentsSEPA Instant in 2027: What Payment and E-Money Institutions Must Build
Euro area payment and e-money institutions must send and receive instant euro transfers by 9 April 2027; providers outside the euro must send them, with Verification of Payee, by 9 July 2027. What to build and when.
Data ProtectionIndia's DPDP Rules: The Engineering Work Due by May 2027
Notices, consent records, one-year logs, erasure jobs, breach intimation and parental consent: what India's DPDP Rules require in software by 13 May 2027, and a seven-month plan to get there.
Digital IdentityJapan Ends Photo-Based eKYC on 1 April 2027: Moving Onboarding to the IC Chip
From 1 April 2027, online onboarding in Japan must read the ID chip or use JPKI. What ends, what remains, and what changes in your app, back end and records.
Tax & Finance SystemsJapan's New Lease Accounting Standard: The System Work Before April 2027
From fiscal years starting 1 April 2027, Japanese GAAP puts almost every lease on the balance sheet. What changes in contract data, calculation, journals and ERP integration, with a six-month plan.
AccessibilityADA Title II and Section 504: What Public and Healthcare Sites Must Fix by 2027
US state and local governments face WCAG 2.1 AA from 26 April 2027 and HHS-funded providers from 11 May 2027. What the rules cover, the exceptions, why overlays fall short, and a plan.
AI ComplianceEU AI Act Database Registration Under Article 49
Who registers high-risk and Article 6(3) systems in the EU database, what Annex VIII asks for, and why 2 December 2027 is the working date after the Digital Omnibus.
EU ComplianceEU Inc: What the 28th Regime Proposal Says and When You Can Use It
One EU company form, registered in 48 hours for at most €100, with no minimum capital and stock options taxed only on sale. What COM(2026) 321 contains, what it leaves out, and a realistic timeline.
CollaborationOpen Source Business Collaboration at Scale: Privacy & Full Control
What is Nextcloud, how does it work, and how do you set it up for a business? Files, office documents and video calls on your own servers, with full data ownership.
AdvertisingOpenAI Opened ChatGPT Ads to Everyone. Here Is the Whole Setup, Screen by Screen.
Self-serve advertising in ChatGPT is live in more than 60 countries. A walkthrough of Ads Manager Beta: objectives, context hints instead of keywords, the seven day budget maths and the conversion tracking to set up first.
AI ComplianceSynthID-Text Is Live in Gemini and Claude. Text Detection Is Still Not Public.
Gemini and Claude watermark their text, OpenAI has started to, and no public tool checks text for any of the marks. How SynthID-Text works, which detectors exist and who may use them, and what the accuracy numbers really say.
EU ComplianceThe EU Digital Law Pipeline: What Is Coming After 2026
Every proposed EU digital law still in the legislative machine, what stage it is at, and which of it should actually influence what you build now.
Data & CloudThe Cloud and AI Development Act: Europe's Sovereignty Push
Why the mechanism is public procurement rather than direct regulation, and what an honest infrastructure and dependency map actually requires.
EU FundingEU Technology Funding 2025 to 2028: The Complete Map
Every EU technology funding programme, what it actually funds, roughly how much money is involved, and an honest filter for whether applying is worth your time.
EU FundingDigital Europe Programme: The Funding Software Companies Miss
It funds deployment, not research, which is why it fits far more companies than Horizon Europe. Data spaces, EDIHs and the 50 percent co-funding catch.
EU FundingThe EIC Accelerator: Grant Plus Equity for Deep Tech
Blended finance for single companies, continuous submission from 2026, and a success rate in the single digits. Who it suits and who it does not.
AI ComplianceInvestAI and AI Gigafactories: Europe's Compute Build-Out
AI factories, gigafactories and what they mean if you are not building a data centre. How to get access to European compute, and what porting actually costs.
EU FundingSTEP: The EU Funding Layer That Is Not a Programme
You cannot apply to STEP. What it actually does across eleven programmes, and why the Sovereignty Seal changes the maths on applying at all.
EU FundingCEF Digital: Funding the Connectivity Layer
Submarine cables, backbone networks and 5G corridors. Which topics are oversubscribed, which are not, and why studies come before works.
E-CommerceGreen Claims and Product Data: What EU E-Commerce Must Show From September 2026
Generic green claims are banned, harmonised guarantee notices become mandatory, and GPSR listing data is still missing from most catalogues.
AI ComplianceEU AI Act Transparency Rules Are Live: What Changes on Your Website
Article 50 applies from 2 August 2026. Chatbot disclosure, machine-readable marking of AI content, and the revised high-risk deadlines.
CybersecurityThe Cyber Resilience Act: Reporting Has Applied Since 11 September 2026
Reporting has applied since 11 September 2026, with a 24 hour clock. Scope, SBOM pipelines, vulnerability monitoring, incident runbooks and full application in December 2027.
Digital IdentityThe EU Digital Identity Wallet Lands in December 2026: How to Prepare
Relying party registration, credential standards, age verification and KYC use cases, and what is worth building before the deadline.
Data ProtectionCookie Consent Is Being Rewritten: What the Digital Omnibus Changes
The Commission would move cookie rules into GDPR; the Council's text keeps them in ePrivacy. What is proposed, what regulators enforce today, and what to change now.
aiInnovationBalkan AI Subsidy Program: Free AI Tools for Young Entrepreneurs
C9 Group fully subsidizes premium AI development tools for young entrepreneurs across the Balkan region. GitHub Copilot, ChatGPT Pro, Claude, Cursor and more, at zero cost.
Marketing AutomationOpen Source Marketing Automation at Scale: Privacy & Full Control
What is Mautic, how does it work, and how to set it up? The complete guide to self-hosted marketing automation with full data ownership.
AI & SoftwareAI-Driven Software Fluidity: The Future of Adaptive Applications
Explore how AI is revolutionizing software development by enabling adaptive, self-optimizing applications that evolve with user needs and technological advancements.