Electronic Fiscalisation (EFI) in Montenegro
https://eporezi.me/en/vodici/elektronska-fiskalizacija
Guide to electronic fiscalisation (EFI) in Montenegro: who is obliged, how to register business premises, operators and software on the SEP portal, what a fiscal invoice must contain (IKOF, JIKR), what to do when the internet is down, and the fines (up to €40,000). Both cash and non-cash invoices are fiscalised in real time through the Tax Administration's fiscal service.
At a glance
- Timing
- Depends on obtaining the certificate and software; business premises must be registered at least 24 h before the first invoice
- Cost / tax
- No Tax Administration fee; the cost of the e-signature certificate and software depends on the chosen provider
- The Tax Administration charges no fee; you only pay for the certificate and software.
- Business premises must be registered at least 24 hours before the first invoice.
- Registration and invoices go through the SEP portal (sep.tax.gov.me).
- The duty to fiscalise does not depend on being VAT-registered.
Procedure
Obligors are (1) natural persons liable to personal income tax who must issue invoices (entrepreneurs), (2) legal entities liable to corporate income tax who must issue invoices (d.o.o. etc.) and (3) taxpayers selling goods or services through self-service machines — Art. 4 of the Fiscalisation Law. Fiscalisation covers both cash and non-cash payments (Art. 1–2). Not obligors (Art. 5): sale of tickets/tokens in scheduled passenger transport, sale of own agricultural products at market stalls, purchase of agricultural products by VAT payers, universal postal services, banking and insurance, payments for games of chance, sales on board the national air carrier. Mixed activities are exempt only for the Art. 5 activities (Art. 6).
The obligation does not depend on VAT registration: the Art. 4 test is being a personal/corporate income taxpayer with a duty to issue invoices, which also applies to small entrepreneurs below the €30,000 turnover threshold.
The obligor must use a certificate for electronic signature issued by a certification service provider under the e-signature regulations to sign fiscal invoices and to authenticate in the exchange with the Tax Administration (Art. 10 para. 2–3). The certificate (or a soft certificate) is installed on the electronic payment device (ENU) — hardware with software that creates, sends and receives fiscal-invoice messages (Art. 3 item 8).
Before using the fiscal service the obligor electronically submits data on each business premises separately, at least 24 hours before it starts issuing fiscal invoices (Art. 14 para. 1). Data: TIN, geolocation, address, type of premises (incl. online shop and mobile premises), activity code, working hours and days, start date, temporary closures, end date, floor area, payment mode (cash/non-cash), status, owned or rented (Art. 14 para. 2). The Tax Administration generates a unique premises code. Any change (closure, new premises, change of activity) is reported at least 5 days before it occurs (Art. 14 para. 6). Registration is done on the Self-service EFI Portal (SEP): https://sep.tax.gov.me/self-care (test environment: https://efitest.tax.gov.me/self-care).
For every person issuing invoices the obligor assigns an operator code, links it to that person's JMB and reports it to the Tax Administration (Art. 8). Before using the fiscal service it also reports the software producer and maintainer: name, seat, TIN, software name and the unique producer/maintainer code assigned by the Tax Administration (Art. 15–16). The software must embed the producer code and must not allow non-issuance of invoices or avoidance of fiscalisation (Art. 11 para. 1, Art. 15 para. 4).
Before going live the obligor is given the possibility to test the fiscal service (Art. 11 para. 2; test SEP portal). Every fiscal invoice is signed electronically and sent to the Tax Administration in real time; the Tax Administration returns the unique invoice code (JIKR), which is printed on the invoice together with the obligor's code (IKOF) (Art. 12–13). Besides the VAT data, a fiscal invoice contains: invoice number (invoice / premises / year / ENU), hour and minute, operator code, IKOF, JIKR, payment method (cash, card, bank transfer, other), payment due date if not paid immediately, and the buyer's TIN for B2B / non-cash transactions (Art. 7 and 9). At the start of each working day the cash deposit per ENU is reported to the Tax Administration (Art. 12 para. 2). Cancellation and refund invoices are fiscalised too (Art. 21). A notice on the obligation to issue and take an invoice must be visibly displayed at every point of sale (Art. 32 para. 9 of the VAT Law).
A buyer may check within 90 days of issue whether the invoice was reported to the Tax Administration (Art. 22).
Temporary internet outage: invoices are issued without a JIKR (IKOF only); the obligor must restore the connection and send them within 2 days, otherwise notify the Tax Administration (Art. 17). Fiscal service failure: invoices are recorded in an invoice book previously certified by the Tax Administration; within 5 days the service must be restored or the Tax Administration notified on the prescribed form, and the invoices sent electronically within the same period (Art. 18). Areas without internet coverage: the obligor works in off-line mode with a certificate from the Agency for Electronic Communications on unavailability of internet (issued within 30 days, valid one year, renewable) and delivers the invoices to the Tax Administration by the 10th of the month for the previous month (Art. 19–20).
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Who is and who is not an obligor (Art. 4–5)
| Obligor | Not an obligor |
|---|---|
| Entrepreneur (personal income tax payer) issuing invoices | Sale of tickets/tokens in scheduled passenger transport and luggage fees |
| Legal entity (corporate income tax payer) issuing invoices | Sale of own agricultural products at market stalls |
| Sales through self-service machines | Purchase of agricultural products by VAT payers |
| Both cash AND non-cash payments (B2B invoices too) | Universal postal services; banking, insurance and reinsurance |
| Online shops and mobile premises (registered as premises type) | Payments for games of chance; sales on board the national air carrier |
Deadlines in the fiscalisation procedure
| Action | Deadline | Article |
|---|---|---|
| Register premises before the first invoice | 24 hours before start | Art. 14 para. 1 |
| Report a change of premises data | 5 days before the change | Art. 14 para. 6 |
| Report cash deposit | At the start of each working day, per ENU | Art. 12 para. 2 |
| Internet outage — reconnect and send invoices | 2 days | Art. 17 para. 2 |
| Fiscal service failure — invoice book, notice and delivery of invoices | 5 days | Art. 18 para. 2 and 4 |
| Off-line mode (no coverage) — deliver invoices | By the 10th of the month for the previous month | Art. 19 para. 3 |
| Agency certificate on internet unavailability | Issued within 30 days, valid 1 year | Art. 20 para. 4–5 |
| Buyer's verification of an invoice | 90 days from issue | Art. 22 |
Fines (Art. 24, 26–28)
| Offence | Legal entity | Entrepreneur | Responsible / natural person |
|---|---|---|---|
| Not issuing fiscal invoices via the fiscal service; software allowing avoidance; machines without fiscalisation; no invoice book; not using off-line mode (Art. 26) | €8,000–40,000 | €2,000–12,000 | €1,300–4,000 |
| Incomplete invoice content/number, no certificate, premises not registered 24 h ahead, changes not reported 5 days ahead, 2/5-day and 10th-of-month deadlines (Art. 27) | €4,000–20,000 | €1,000–6,000 | €650–2,000 |
| Operator code not linked to JMB / not reported; no Agency certificate (Art. 28) | €3,500–15,000 | €1,000–6,000 | €300–2,000 (responsible) / €650–2,000 (natural person) |
| Measure: ban on activity (Art. 24) | Up to 90 days or until the cause is removed | — | — |
Additional notes
The law applies from 1 January 2021; the old tax cash registers (Regulation on the tax cash register) ceased to apply on 1 June 2021 (Art. 29–32). There is no 'fiscal cash register' device — the system is software-based: certificate + software + permanent internet connection.
According to the consolidated text on gov.me the law includes amendments up to Off. Gazette 8/21; the July 2026 tax package (Off. Gazette 104/26) does not amend the Fiscalisation Law.
IKOF (obligor's identification code) is generated by the obligor's software, JIKR (unique invoice code) by the Tax Administration — both are alphanumeric and graphic records on the invoice (Art. 3 items 1–2, Art. 13).
Questions and support: IRMS portal (https://irms.tax.gov.me/public/), e-mail [email protected], tel. 19707.
Required Documents
- Certificate for electronic signature / seal
- Business-premises data (TIN, geolocation, address, type, activity, working hours, floor area, payment mode, owned/rented)
- Operator code registration with JMB
- Software producer and maintainer data with unique code
- Invoice book certified by the Tax Administration (fallback)
- Agency certificate on internet unavailability (if applicable)
Legal Basis
- Law on Fiscalisation in Trade of Products and Services (Off. Gazette CG 46/19, 73/19, 8/21) — consolidated text
- Fiscalisation rulebooks (message format, operator code, invoice book, internet-unavailability certificate) — Tax Administration page
- VAT Law — Art. 32 (invoice content, notice on the duty to issue invoices)
- Law on Electronic Identification and Electronic Signature (trust service providers and their registry)
Competent Institutions
- Tax Administration of Montenegro — Self-service EFI Portal (SEP)
Registration of obligors, premises, operators and software; fiscal service
- Tax Administration — test SEP portal
Testing the fiscal service before go-live
- Agency for Electronic Communications and Postal Services
Certificate of internet unavailability (off-line mode)
FAQ
How do I cancel (storno) a fiscal invoice I have already issued?+
An issued fiscal invoice has already been sent to the Tax Administration in real time (Art. 2), so it is not deleted or edited. Instead you issue a new invoice that cancels (storno) the previous one; an invoice showing a full or partial return of goods or services is issued the same way. All provisions of the law apply to such an invoice accordingly (Art. 21): it goes through the fiscal service, is signed with the electronic certificate, gets an IKOF and a JIKR (Arts. 10, 12–13) and takes the next number in the continuous sequence for that business premises and device (Art. 9). The exact button or menu depends on your fiscalisation software.
Are B2B invoices paid by bank transfer fiscalised too?+
Yes. The law covers fiscalisation of both cash and non-cash payments (Art. 1–2). A non-cash invoice shows the payment due date and the buyer's TIN (Art. 7) and is numbered per Art. 9.
Do I have to fiscalise if I am not VAT-registered?+
The law ties the obligation to being a personal/corporate income taxpayer with a duty to issue invoices, not to VAT registration (Art. 4). Entrepreneurs below the €30,000 VAT threshold still have a duty to issue invoices, so they are covered too.
What if the internet goes down?+
You issue invoices without a JIKR (IKOF only) and within 2 days reconnect and send them to the Tax Administration; if you cannot, you notify the Tax Administration (Art. 17). If the fiscal service itself is down, invoices are entered in the certified invoice book and delivered within 5 days (Art. 18).
When do I register new premises or a closure?+
New premises at least 24 hours before the first fiscal invoice; any change, including temporary or permanent closure, at least 5 days before it occurs (Art. 14).
How high are the fines for not issuing a fiscal invoice?+
€8,000–40,000 for a legal entity, €2,000–12,000 for an entrepreneur, €1,300–4,000 for the responsible person (Art. 26), plus a possible ban on activity for up to 90 days (Art. 24).
Related guides
Entrepreneur Registration
Steps, IRMS/eFirma portal, lump-sum taxation up to €30,000 turnover
Company Formation in Montenegro
LLC registration step by step, CRPS/eFirma, costs €80-210
Lump-Sum Taxation for Entrepreneurs
Fixed monthly amount, €30,000 threshold (since 2025), ZPO form by end of January, Tax Authority approval
VAT in Montenegro — rates & filing
4 rates: 21/15/7/0%, €30k threshold, monthly filing by the 15th, registration in 7 days