Knowledge Base

All answers in one place.

Swiss-grade FAQ on invoicing, compliance, security and scaling — straight from our architecture.

What is RechNex? General
RechNex is a Swiss B2B SaaS platform for the entire invoice lifecycle: creation, delivery, dunning and compliance — built specifically for the Swiss market with full SIX Swiss QR-bill v2.3 compliance.
Is RechNex already available? General
RechNex is in its final launch phase. Pre-registered users receive priority access, updates and invitations for productive use.
How quickly can I start after registering? General
Onboarding is designed for fast go-live: create an account, set up a company profile, generate your first invoice — in just a few minutes.
Which languages are supported? General
RechNex is fully quadrilingual: German (de-CH), French (fr), Italian (it) and English (en). This applies to the entire UI, PDF documents, emails and validation messages.
Can I create a professional invoice in 5 minutes? Invoicing
Yes. RechNex generates a clean, Swiss QR-compliant PDF invoice in just a few minutes. You can print it, send it by email and edit it anytime — as long as it remains in draft status.
How does PDF generation work? Invoicing
PDFs are generated directly in server memory (in-memory processing) — with no temporary files on disk. The layout follows the professional Swiss B2B standard with a correct payment part (148mm) and receipt (62mm).
Can I disable the QR payment slip on an invoice? Invoicing
Yes. The "Include QR Slip" toggle lets you hide the QR payment section — for example, for e-invoices paid by card.
How does invoice numbering work? Invoicing
RechNex uses deterministic auto-numbering with configurable prefixes (e.g. RE-2026-00001). The system prevents collisions from concurrent requests and automatically resets the sequence on January 1st.
What happens after an invoice is issued? Invoicing
After issuance (ISSUED), the invoice is frozen: all data — client details, company info, amounts — is stored as an immutable snapshot. Later changes to master data never affect issued invoices.
Are invoices SIX Swiss QR-bill v2.3 compliant? Swiss QR
Yes. RechNex generates QR invoices in full compliance with the SIX specification: correct 32-line payload, Error Correction Level M, 5mm quiet zone and precisely centered Swiss cross (7×7mm).
Which reference types are supported? Swiss QR
QRR (for QR-IBAN, recursive Modulo 10), SCOR (for standard IBAN, ISO 11649 / Modulo 97-10) and NON (no reference). The reference type is automatically detected based on the account type.
What is Address Type S and why does it matter? Swiss QR
Address Type S is the structured address format (street and house number separated), mandatory for Swiss banks since November 2025. RechNex enforces this format natively.
How does Swiss rounding work? Swiss QR
For CHF invoices, RechNex rounds the gross total to 5 centimes (0.05 CHF) and records the difference as a rounding adjustment. PRO plans allow choosing between 0.05 and 0.01 CHF. EUR invoices default to 0.01.
Which VAT rates does RechNex support? Swiss QR
All Swiss rates: 8.1% (Standard), 2.6% (Reduced), 3.8% (Accommodation) and 0% (Exempt). The engine automatically groups line items and generates an ESTV-compliant tax breakdown.
How does automated dunning work? Dunning
RechNex automatically detects overdue invoices and escalates in three levels: Payment Reminder (L1), 1st Reminder (L2), 2nd Reminder (L3). Each dunning letter inherits the link to the original invoice.
Are dunning fees calculated automatically? Dunning
Yes. The system calculates flat dunning fees according to your company policy and automatically applies 0% VAT — fully compliant with Swiss tax law for contractual penalties.
Can a reminder be sent twice? Dunning
No. The autonomous scanner uses transactional database locks (SELECT FOR UPDATE) at document level. Concurrent processing is safely queued — duplicate sending is technically impossible.
Where is my data stored? Security
Exclusively in Switzerland, on Infomaniak Sovereign Cloud (Jelastic). Application servers run in a closed internal network with no public IP address (Zero Public IPv4). All external traffic is terminated by a dedicated NGINX load balancer.
How is company data separated? Security
Each organization is an independent tenant with cryptographic isolation. Every database query is strictly scoped to the organization ID — a manipulated URL parameter can never return data from another company.
Is there an audit log? Security
Yes. A centralized audit log precisely tracks document creation, email delivery, plan changes and administrative actions. The DocumentDeliveryLog also provides irrefutable proof of email delivery.
How are passwords protected? Security
Passwords are hashed with Argon2id — the most secure algorithm per OWASP, resistant to GPU-based brute-force attacks. Verification links use one-time SHA-256 tokens valid for 24 hours.
Can I manage multiple companies in one account? Account
Yes. Depending on your plan, you can manage up to 15 independent company profiles within one organization. A context switcher instantly switches between profiles, while all data remains strictly separated.
Can I invite team members? Account
On the BUSINESS plan, you can invite team members and assign roles (e.g. ADMIN, BILLING). Since the subscription is tied to the organization, staff changes don't affect the billing cycle.
What happens when my subscription expires? Account
RechNex puts your account into read-only mode (Graceful Degradation). You can still view all data, download PDFs and create ZIP exports — but you cannot issue new invoices or create clients until the subscription is renewed.
Is there a free trial invoice? Account
Yes. The public trial generator creates one invoice per month — no account needed. Access is protected by a cryptographic fingerprint (SHA-256) that stores no personal data.
Which plan should I choose? Pricing
FREE: entry-level with full QR compliance. PRO: branding, extended rounding options, up to 3 company profiles. BUSINESS: teams, up to 15 profiles, higher limits. ENTERPRISE: unlimited, custom integrations, white-label.
What is included in the FREE plan? Pricing
100% SIX Swiss QR-bill v2.3 compliant invoices, full multi-tenancy data isolation, 1 company profile, up to 10 documents/month, 25 clients, 2 bank accounts and 250 MB storage. Branding assets are locked.
Can I upgrade at any time? Pricing
Yes. You can upgrade at any time without data migration. Your existing setup, all invoices and client data remain fully intact. Payment is processed via Stripe with full PCI-DSS compliance.
How is billing handled? Pricing
Monthly and transparently via Stripe. There are no hidden fees. Stripe is the single source of truth for all subscription states — our system syncs in real-time via signed webhooks.
Is RechNex GDPR/nDSG compliant? Privacy
Yes. All data remains in Switzerland (Infomaniak Sovereign Cloud). RechNex meets the requirements of the GDPR and the new Swiss Data Protection Act (nDSG/FADP). Sub-processors are transparently documented.
Can I export my data? Privacy
Yes. The bulk export generates ZIP archives with PDFs and CSV files (UTF-8 with BOM, semicolon separator for Excel compatibility). An automated garbage collector deletes expired exports after 7 days.
Are emails to my clients logged? Privacy
Yes. Every delivery attempt is recorded in the DocumentDeliveryLog — including timestamp and status. In a legal dispute with a debtor, RechNex provides a complete proof of delivery.