Articles in this section
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Slovak e-invoicing from 1 January 2027: which entities are caught, and what a foreign parent must do differently
From 1 January 2027 structured e-invoicing and data reporting are mandatory for domestic B2B and B2G supplies in Slovakia. Fines reach €100,000. -
The Peppol 5-corner model and the digitálni poštári: how Slovak e-invoicing actually works
Slovak invoices never pass through a state platform. Four Peppol corners carry the invoice; a fifth sends tax data to the Financial Administration.
In practice
The control has to run before the invoice becomes irreversible.
An accepted structured invoice can be corrected but never deleted, and from the penalty date every defect has a price. Barzel puts the approval threshold, the duplicate check and the signed record in front of submission, so the process can be defended on the day an auditor or the tax authority asks.
95 days leftMandatory e-invoicing in Slovakia from 1 January 2027
BarzelVault
The AI action firewall: decide what an agent may do before it does it.
- Approval thresholds and policy checks enforced before execution; human approvals that expire and escalate.
- Cryptographically signed audit receipts: trigger, inputs, policy version, approver, outcome.
- Credential isolation, spend and action limits, and an emergency kill switch.
Free tier: 10,000 calls a monthPaid plans from $199 a monthLive on MCPize
BarzelOps
Governed workflow automation across the systems that run the business.
- Durable, idempotent execution: a timeout is retried once, never filed twice.
- Human approval checkpoints that pause the workflow and resume it.
- Isolation per entity or client, signed evidence receipts and a portable manifest; HubSpot, Xero, Gmail, Google Drive and Slack.
Free tier: 100 calls a dayPaid plans from $19 a monthLive on MCPize
Enterprise: written quote by email within two business days. No sales call.