Fiscalization of online stores in Montenegro

Every online sale in Montenegro is a fiscal transaction — the law makes no exception for the internet. Your store must issue a fiscal receipt in real time, with a QR code and IKOF/JIKR identifiers, directly through the tax authority CIS system.

What the law requires

• Registration of an electronic fiscal service (EFI) and issuance of receipts through it.
• A digital certificate (P12) that signs every receipt XML.
• Receipts must contain IKOF, JIKR and a QR code pointing to the tax authority verification URL.
• VAT is calculated per rate (21% standard) with strictly defined rounding — to two decimals, after summing per rate.

Practical pitfalls

The most common mistakes: computing totals with float types (cent-level errors that CIS rejects), sending receipts with more than 2 decimals, and implementations that do not distinguish the test (`efitest.tax.gov.me`) from the production environment. Our HostingCMS has a built-in EFI integration that solves all of this — decimal arithmetic, signed XML, automatic retry for network errors.

What implementation costs

If you build your store on our platform — nothing extra; fiscalization is a standard module. For third-party systems, the estimate depends on the technology — contact us for an estimate.