Slovak invoicing softwarebuilt for the 2027 law.
1FAKTURA was launched on the eve of Act No. 385/2025 Coll. on mandatory electronic invoicing. Our goal: that a Slovak sole trader or small business can issue their first invoice via UBL 2.1 and PEPPOL BIS 3.0 in under a minute — no paperwork, no credit card, no stress.
So Slovak businesses
don't lose time on invoicing.
Existing Slovak invoicing tools are either heavy 2010s-era accounting software or forms that spit out a PDF with no structured XML at all. Neither will meet Act No. 385/2025 Coll., which from 1 Jan 2027 requires B2B electronic invoices in UBL 2.1 sent over the PEPPOL network.
We built 1FAKTURA from the ground up with this law in mind. Every invoice you issue with our software today is both PDF/A-3 for archive and UBL 2.1 XML for Peppol. On 1 Jan 2027 there's nothing to change — just click “Send via Peppol”.
Our second goal is fair pricing. The Štart €0 forever plan covers the needs of most sole traders: 10 invoices a month, full archive, exports to Pohoda. You pay only when you genuinely scale.
Small team,
big attention to detail.
Software engineer with a background in SaaS products and financial tools. Founded 1FAKTURA in 2026 after seeing Slovak sole traders and small businesses struggle with paper-based invoicing on the eve of Act No. 385/2025 Coll. on mandatory e-invoicing.
For business inquiries: info@1faktura.sk
Engineers, tax advisors, copywriters.
We grow sustainably — without a VC round. Open roles: senior fullstack engineer (TS/React/Postgres), part-time tax consultant (Slovak VAT + e-invoicing), copywriter (Slovak, B2B SaaS experience).
Write to usFour rules
we will never break.
Built for Slovak law
Every feature is verified against Act No. 222/2004 Coll. on VAT and Act No. 385/2025 Coll. on e-invoicing. UBL 2.1 + Peppol BIS 3.0 are first-class formats, not an add-on.
EU servers, AES-256 at rest
The app runs on Vercel (Frankfurt), the database on Prisma Postgres (EU). 30-day backups, 10-year invoice archive per § 76 of the VAT Act. No transfers outside the EU except OCR under DPF.
Štart €0 forever plan
No credit card, no 14-day timer. The paid plan kicks in when you genuinely need more. For a sole trader issuing 10 invoices a month, you're here free forever.
Your data, your export
Download your full invoice database any time in UBL XML, PDF/A-3 or accounting CSV. No “proprietary” formats, no trap when you decide to move.
Who we work with
and who we trust.
- Tatra banka
- Slovenská sporiteľňa
- VÚB
- ČSOB
- 365.bank
- Poštová banka
- mBank
- Fio banka
- Pohoda (Stormware)
- Money S3 (Solitea)
- KROS Omega — in progress
- KROS Olymp — in progress
- Stripe Payments Europe
- Vercel (EU hosting)
- Prisma Postgres (EU)
- Resend (email)
- Cloudflare Turnstile
- Sentry
- Peppol BIS Billing 3.0
- UBL 2.1 / EN 16931
- Finančná správa SR — IČO registry
- OpenPeppol Authority
Your invoices never
leave the EU.
AES-256 at rest, TLS 1.2+
Database, invoice files and backups are all encrypted at rest with rotated keys. App traffic is HTTPS-only with HSTS preload.
Vercel Frankfurt + Prisma EU
Edge functions and the database live in the EU. Customer content does not leave the region. Optional OCR (OpenAI) is covered by DPF + training opt-out.
10 years PDF/A-3
Every issued invoice is permanently archived in PDF/A-3 with embedded UBL XML per § 76 of the VAT Act. 30-day retention on backups.
Full personal-data processing is described in our GDPR policy. Terms of service and SLA are in the Terms of Use.
Who owns the company behind 1FAKTURA?+
Where are your servers?+
Why did you go into invoicing specifically?+
What are your plans for the next few years?+
How quickly do you respond to support?+
Issue your first
e-invoice today.
14 days full Pro with a card on file (cancel any time before the trial ends). Or Štart €0 forever, no card. We'll do the migration and setup for you — free, within 24 hours.
Start free