Simple e‑invoicing for everyone

EVERIFIN is the only company on the market that is both a digital postman and a payment institution licensed by the National Bank of Slovakia. Your invoices and data therefore get the highest level of protection.

Mandatory e-invoicing applies from 1 January 2027. The voluntary phase starts in Q2 2026.

How to get started?

Three steps and your e-invoicing is sorted.

01

You choose EVERIFIN

On the Financial Administration portal you select EVERIFIN as your digital postman. You will receive an activation e-mail.

02

You register

You click the activation link in the e-mail and, once registered, we open up your Inbox of issued and received e-Invoices.

03

e‑Invoicing is ready

In your inbox you can issue, approve and share invoices with your accountant — with no e-mails and no attachments.

Key insights from practice

Sole traders and single‑owner companiesMobile or web, no accounting software
You no longer have to send invoices by e‑mail or post to VAT payersManually attaching PDF files or printing paper is a thing of the past. The invoice is sent from your EVERIFIN inbox straight into the customer’s system.
A received invoice can no longer be rejectedIf you receive a document that contains an error, was not agreed in advance or does not reflect reality, there is no reject button in the network — you resolve it with a credit note.
Invoices can only be received through a digital postmanThe obligation to issue invoices via Peppol may not apply to you, but there is no avoiding the receipt of supplier invoices. If your supplier is a VAT payer, they can no longer send you invoices by e-mail or post.

Focus on your business, leave the invoicing to us

EVERIFIN gives you an invoice Inbox on your computer or your phone.

Test environment
Small and medium‑sized businessesIntegration with your ERP and accounting system
You don’t change the format — we doYour ERP or accounting system sends its output and we convert it to the Peppol BIS 3.0 format.
Delivery statuses belong in your systemEvery invoice has a status and a timestamp. You see a failed delivery immediately, along with the reason — not after a phone call from your customer.
Bulk sending with no manual workInvoices go out in batches; payment matching and archiving run automatically — with no re-keying between systems.

Invoice from your ERP, we take care of the rest

We connect your invoicing system. Bulk sending, statuses in one place, payment matching.

We support most ERP systems used in Slovakia. You will find the pricing for the service in your ERP.
and others
Large companiesREST API for UBL documents and a sandbox
One API for all your entitiesA REST API for UBL documents, several company IDs under a single access and a full audit trail of every operation.
A sandbox before you go liveA test environment with a test Peppol account. You can run through the integration risk-free before the mandatory phase.
Custom validations and checksOn top of the Peppol validations we can add your internal rules, IBAN and tax ID checks and an approval workflow.

Plug e‑invoicing directly into your processes

Multiple entities, custom validations and a full audit trail through a single API.

Pricing

Prices per company per month, excl. VAT. Start for free and change your plan at any time.

FREE
€0/ month
Free forever

I just want to try it out

3 invoices sent per month
Unlimited received invoices
90-day archive
1 user
MICRO
€4.99/ month
€49.90 per year

For small businesses and sole traders

Up to 30 invoices sent per month included
Unlimited received invoices
Easy document sharing with your accountant
Optional archiving for up to 10 years
E-mail support
ACCOUNTING

Are you an accountant or an accounting firm?

We have a solution for your entire client base.

One access point to all the companies you manage
Fast connection of companies
Reliable and secure data transfer
Complete accounting automation
BUSINESSRECOMMENDED
from €19/ month
Price based on scope

For medium-sized and large companies we offer:

InvoiceConnect — integration directly in your ERP (QI Group, Premier system, IBIS/DB, Etrim, Oberon and others)

InvoiceBox — a mailbox for receiving and sending invoices with manual export to your ERP

We’ll get back to you within 3 business days
Multiple users and accountants with access-rights management, companies within a group
Accounting automation, exports and imports
VAT ID validation on sent and received invoices
Alert when a supplier’s IBAN changes
Detection of unusual amounts against a supplier’s history
Multiple invoice number series and branches
Invoice approval process (coming soon)
Automatic matching of bank data with e-Invoices
Highest level of security (ISO 27000, penetration tests)

What does the EVERIFIN digital postman do?

Conversion, encryption, delivery via Peppol, reporting to the Financial Administration and archiving — we do it all in the background.

01You issue an invoiceFrom your phone in the EVERIFIN multibanking app or on your computer. For companies we also offer API access connected to your accounting system.
02Invoice processingWe convert the invoice to the XML BIS3 format and encrypt it.
03DeliveryWe deliver the invoice to the recipient’s inbox through the Peppol network, with a delivery status and a timestamp.
04Reporting to the Financial AdministrationEncrypted invoice data goes to the Financial Administration automatically in the background.

EVERIFIN always offers more

Extended archiving

Statutory retention is not a Peppol service — we handle it for you. Secure storage within the EU, accessible at any time.

Europe‑wide coverage

You send cross-border invoices just like domestic ones. You will be ready for the ViDA regime from 2030 with no further integration.

Invoice and payment in one

You can check a received invoice and pay it from any of your bank accounts directly in EVERIFIN.

Accounting AI agent

Every accounting case has a solution. The AI finds it and helps you handle accounting cases faster and with greater certainty for your company.

All your documents in one place

Receipts are processed too — with no needless paperwork and nothing getting lost.

Financial overviews

You get a better view of your company’s costs and revenue, which lets you plan your budget and manage company finances more effectively.

What the law says

An amendment to the VAT Act (Section 76a, Act No. 222/2004 Coll.) introduces mandatory e-invoicing through the European Peppol network.

1 Jan 2026The law takes effectThe legal framework and the register of certified postmen.
Q4 2026Voluntary phaseNow is the right time to try e-Invoice out without the stress
1 Jan 2027Mandatory for everyoneDomestic business-to-business transactions through Peppol and the Financial Administration
1 Jul 2030Cross‑border invoicesEVERIFIN is already ready for Europe-wide e-Invoicing (ViDA)
Penalties for non-compliance under Act No. 385/2025 of up to EUR 100,000.

Questions

Do I have to send e‑invoices even if I am not a VAT payer?

From 1 January 2027, VAT payers must issue e-invoices. Every taxable person, however, will have to receive them — including sole traders and self-employed people who are not VAT payers, landlords and farmers.

Is it enough to send invoices by e‑mail as a PDF?

No. Once the law takes effect, neither a PDF nor a scan counts as an e-invoice. The invoice must be in a structured format and delivered through the Peppol network by a certified postman.

My ERP sends invoices in a format other than Peppol BIS — what do I do?

We take care of the format for you. We accept your output and convert it to Peppol BIS before sending — you don’t have to change anything in your system.

A supplier claims they sent me an e‑invoice, but it never arrived in my ERP. What should I do?

In EVERIFIN you can see the delivery status of every invoice together with a timestamp. If delivery failed, you will see the reason and you can re-deliver or download the invoice.

What is archived, for how long and where?

We archive both the structured e-invoice and the delivery confirmations, in line with Slovak legislation, within the EU. You can access the documents at any time throughout the entire retention period.

How can I test the integration before going live?

You get a test environment and a test Peppol account. The voluntary phase from Q2 2026 exists precisely so that you can go through your processes without any risk.

What are the penalties for non‑compliance?

Failing to comply with mandatory e-invoicing is a breach of the VAT Act and the Financial Administration can impose a fine for it. The exact amount is set by the tax authority according to the severity.

Any other questions?
For developers

API integration

For ERP, accounting and invoicing systems

REST API — sending and receiving UBL documents
Validation before sending
Real-time delivery status
Partner lookup in the Peppol network
API documentation ↗

Invoicing without the worry, with EVERIFIN

Secure, clear and fully compliant with the law.

* First we redirect you to the Financial Administration portal, where you select EVERIFIN as your digital postman. Then we send you an e-mail with an activation link.