01IČO autofill
Enter the customer’s IČO
Just the 8-digit IČO. We pull the company name, address, VAT ID and tax ID automatically from the Slovak registry. No typos in addresses or in the IČO.
Online invoicing · No card required
Issue an invoice online in one minute.
Online invoicing without paper, without Excel and without “call your accountant”. We pull the IČO from the Slovak registry, generate PDF/A-3 + UBL XML and a QR PAY for instant payment.
Issue an invoice now
Štart plan €0 forever · No card
Three steps
From IČO to paid invoice in 60 seconds.
02VAT + VS
Add line items and rate
Items from your catalogue or one-off. VAT rate 0%, 5%, 19%, 23% or reverse-charge. We fill in delivery date, due date and variable symbol.
03PDF + UBL + QR
Send to the client
The invoice goes out by email as PDF/A-3 + UBL 2.1 XML. The client pays by scanning the QR code (Pay by Square) or via Stripe straight from the link. The status flips to “paid” on its own once the payment lands.
What you get
Four outputs from one invoice.
Online invoicing with no extra steps. One form produces everything the client, you and your accountant need.
PDF/A-3 in a Slovak layout
Professional template with every mandatory field per § 74 of Act No. 222/2004 Coll. on VAT. Your own logo, colours and signature from the Lite plan.
UBL 2.1 XML for B2B
Structured e-invoice in UBL 2.1 to the European EN 16931 standard. Ready for Act No. 385/2025 Coll., effective from 1 January 2027.
QR PAY (Pay by Square)
A QR code the client scans with a Slovak banking app — amount, IBAN and VS are pre-filled. No retyping, no payment errors.
Card payment via Stripe
The client clicks the link in the invoice and pays by card. Great for foreign customers or anyone without a Slovak bank.
Invoice preview
Professional PDF, no design work needed.
Slovak-language template with your colours and logo. The client sees a clean invoice; an auditor finds everything in the UBL XML — even 10 years later.
- ✓All mandatory fields per § 74 of the VAT Act
- ✓QR PAY directly on the PDF, IBAN readable by eye and scanner
- ✓Issue in EUR, CZK, HUF, USD and more currencies
- ✓Template in SK / EN / DE / UK for cross-border clients
INVOICE NO. 2026/0042Sent to FS SR
Supplier
Your company s.r.o.
IČO 12 345 678
Bratislava
Customer
Client s.r.o.
IČO 87 654 321
Košice
Item
Qty
Price
Total
Consulting · October
8
85 €
680 €
Template implementation
1
320 €
320 €
Total due
€1,000.00
VS 20260042 · Due 14 Nov
For sole traders
Issue an invoice from your phone between two clients. The mobile app works offline too.
Details for sole tradersFor small businesses
Team invoice approvals, client portal, native XML exports for Pohoda and Money S3 (KROS Omega/Olymp coming).
Invoicing software featuresFor accountants
Multi-company with a single sign-in. Run invoicing for dozens of clients without switching accounts.
See the Pro planPricing & limits
Štart €0 forever. Lite €4.49 for unlimited invoicing.
Štart gives you 50 invoices per month; Lite and above are unlimited. Migration from SuperFaktura, iDoklad or FlexiBee is always free. The full pricing is on its own page.
- ✓Štart €0 — 50 invoices/mo forever
- ✓Lite €4.49 — unlimited invoices, custom logo
- ✓Biznis €8.89 — approvals + accountant exports
- ✓Pro €14.99 — multi-company, API, white-label
More resources
Pick a specific type or guide to continue.
Catalogue
10 invoice types — free template
Standard, proforma, advance, credit note, cancellation, non-VAT and four more.
Open the catalogue →Template type
Proforma invoice template
A preliminary payment document before delivery — when to use it and which fields it must contain.
View →2027 guide
E-invoice 2027 — full guide
Act 385/2025, penalties under § 154/§ 155 of the Tax Code, a 7-step preparation plan.
Read →Online invoicing FAQYou ask,
You ask,
we answer.
Something off? Write to us — we reply within 4 hours on a business day.
info@1faktura.skCan I really issue invoices online for free?+
Yes. The Štart plan, €0 forever, includes 50 invoices per month with every feature (PDF/A-3, UBL XML, QR PAY, IČO autofill). No card, no ads. Details and limits on the free invoice page.
Which client address should I enter?+
Just the 8-digit IČO. Company name, street, city, postcode and VAT ID are pulled from the public Slovak registry. For an individual without an IČO you enter the details manually — they’re saved in the client database and ready for next time.
How does the client pay the invoice?+
Three ways: (1) scan the Pay by Square QR code in a Slovak banking app — amount and VS are pre-filled; (2) bank transfer to the IBAN with the variable symbol we generate automatically; (3) by card via the Stripe link straight from the invoice. Once payment lands the status flips to “paid”.
Is the invoice compliant with Slovak law?+
Yes. The PDF carries every mandatory field per § 74 of Act No. 222/2004 Coll. on VAT. The UBL XML matches European EN 16931, which the Slovak e-invoice 2027 act adopts as its reference schema. For B2B from 1 Jan 2027 you must also have the XML — you do.
Can I send the invoice straight from the app?+
Yes. The invoice goes out from the 1faktura.sk domain by email in Slovak, Ukrainian, English or German. The attachment includes both PDF/A-3 and UBL XML. You can see when the client opened the email, so you know whether to follow up.
How do I add my logo and stamp?+
In account settings upload your logo (PNG, SVG, up to 2 MB) and an image of your stamp or electronic signature. The template places them on the PDF and UBL XML automatically. The custom logo is part of the Lite plan and above.
Beat the deadlineIssue your first
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 freeNo card · cancel anytime
Free migration from iDoklad / SuperFaktúry
Slovak support · Mon–Fri 8–18
Built for Act No. 385/2025 Coll. (effective 1.1.2027)