OrderOS in Slovakia
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OrderOS is sold by Testament, s. r. o., a company based in Slovakia. According to its own pages, it can send, receive and process e-invoices. Formats it names: Peppol BIS Billing 3.0. It does not publish prices: they are on request. It offers a free plan; the limits are below.
OrderOS is run by Testament, s. r. o., listed by the Slovak Financial Administration as a certified delivery service provider ("digital postman") [1].
What every certified provider does. By law, a certified provider checks the e-invoice's format, identifies the sender and the recipient, keeps the invoice intact, proves when it was sent and delivered, and reports the invoice data to the Financial Administration automatically [4].
Prices. Plans are listed, some without a public price. Prices can change at any time; check the vendor's page.
Is this the right provider for me? Compare it with others on the list of certified providers and in prices and free plans.
- Company
- Testament, s. r. o.
- Headquarters
- Slovakia
- Website
- orderos.sk
- Capabilities
- send, receive, process
- Formats
- Peppol BIS Billing 3.0
- Languages
- SK
- Countries
- Slovakia
- Slovak certified provider register
- Certified by the Financial Administration (Finančná správa) as EFSK000064, listed as Testament, s. r. o.
Free plan
Free plan: Single plan at 0 EUR per month, described as having no functional limits; no card required; page says 'currently free'. (Source, checked on )
Prices
| Plan | Price | Includes | Source |
|---|---|---|---|
| OrderOS | EUR 0 / month | unlimited invoices, Peppol send and receive without a stated limit, bank matching, AI extraction of received invoices, orders, warehouse, API; VAT status not stated | orderos.sk, |
Notes
Slovak invoicing and order management app for sole traders and SMEs; states it is a licensed Peppol provider. Offers an API and a 10-year archive.
On official lists
Not found on the official lists we track.
Sources
- Financial Administration: list of certified delivery service providers, 9 Oct 2026 (Slovak) (checked on )
- Financial Administration: delivery service providers in the accreditation process, 9 Oct 2026 (Slovak) (checked on )
- Financial Administration: list of certified providers and their intermediaries, and provider selection (app) (checked on )
- VAT Act 222/2004 as in force from 1 Jan 2027, § 76a delivery service (Slov-Lex, Slovak) (checked on )
- Financial Administration: eInvoicing (English page) (checked on )
- Financial Directorate: FAQ on eFaktúra, version of 8 Oct 2026 (Slovak) (checked on )
Certified e-invoicing providers in Slovakia: all 80 'digital postmen'
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- Doklado (Free plan, paid plans from EUR 9.90 per month)
Chosen by features and price, never by payment. How we choose
