From signed offer to paid invoice.
Invoicing is built into Reonic. Line items, prices, and tax rates carry over from the offer, so what was quoted is what gets billed. No retyping, no second tool.
Invoice
Invoice number
INV-2026-0042
Due date
16.02.2026
Four steps from project to payment.
Customer signs the offer
The digital signature closes the sale. Reonic keeps the variant, prices, and contact data on the project.
Create the invoice
Pick the project and the signed variant. Line items, tax rates, and the receiver fill in automatically.
Send it by email
Your customer gets the invoice PDF plus a receipt page with your bank details for the transfer.
Track the payment
Mark invoices as paid or partially paid. Overdue invoices flag themselves when the due date passes.
Every document a project needs.
Reonic covers the money documents and the paperwork around them, with sequential numbering and locked PDFs that hold up in an audit.
Final invoices
Create the final invoice for a project in a few clicks, pre-filled from the signed offer.
Partial invoices
Bill long projects in stages, for example 30% deposit, 40% interim, 30% on completion.
Credit notes & cancellations
Correct issued invoices with credit notes or void them. Numbers stay sequential and the audit trail stays intact.
Order confirmations & delivery notes
Order confirmations, purchase orders, delivery notes, and letters share the same numbering system. An order confirmation converts to an invoice in one click.
Payment tracking
See invoiced, collected, outstanding, and overdue totals at a glance. Invoices flag themselves as overdue automatically.
Tax adviser export
Download a monthly ZIP with a summary CSV and all invoice PDFs for your tax adviser.
Staged billing for long projects.
A solar or heat pump installation can run for months between signature and commissioning. Partial invoices keep the cash flow healthy: bill a deposit when the order lands, an interim amount when materials arrive, and the rest on completion. Reonic generates the stages and keeps the final invoice consistent with what's already billed.
Generate stages by percentage, scheme, or remaining amount
The final invoice accounts for every partial automatically
Latest documents
INV-2026-0039
Deposit · 30%
INV-2026-0040
Interim · 40%
INV-2026-0042
Completion · 30%
Works with your accounting, instead of replacing it.
Reonic produces the customer-facing documents and tracks what's been paid. Your books stay in your accounting tool. When a customer signs an offer, Reonic pushes the contact and the signed offer to Lexoffice, SevDesk, or Bexio automatically. For everything else there's a monthly export your tax adviser can work with.
Monthly ZIP export with summary CSV and invoice PDFs
Per-line VAT with country-specific rules applied automatically
All integrations
CRM, accounting, lead brokers, calendars, and a REST API.
Book a demo. Get to know all products and features.
In a personal product presentation, we'll show you all products and features. Free of charge, no obligation and tailored to your business and needs.
Book a demo
Yes. Invoicing is part of the standard plan. There's no separate module and no cost per invoice.
No. Reonic creates the customer-facing documents and tracks payment status. Bookkeeping, VAT returns, and payroll stay in your accounting tool. Reonic syncs with Lexoffice, SevDesk, and Bexio and provides a monthly export for your tax adviser.
Yes. Reonic supports deposit, progress, partial, and completion invoices. You can generate the stages by percentage, for example 30/40/30, or define your own scheme.
By bank transfer. The invoice email contains the invoice PDF and a receipt page with your bank details for the transfer.
Issued invoices are locked, which keeps the audit trail clean. To correct one, void it or issue a credit note. Invoice numbers stay sequential and are never reused.
Invoices, partial invoices, and credit notes are available for companies in Germany, Austria, Switzerland, France, the UK, and French overseas territories. Supporting documents like order confirmations and delivery notes work everywhere.