Invoices & quotes
Get paid faster with Backbone invoicing.
Backbone invoicing is designed to help you get paid faster. Create invoices in minutes, with beautiful designs and a scan-to-pay QR code. With powerful automation and AI tools, Backbone helps you optimise cash flow, collect payments and sort transactions.
7 days free, card required. €0.00 due today.
Automate your business to boost productivity and revenue. Invoices can be sent out automatically by e-mail.
Everything at a glance. The e-mail shows the invoice number, the amount and the due date before your client opens anything. The PDF is attached, and replies go straight to you.
The PDF is the page you wrote. Your client receives the same layout and the same numbers you saw in the editor. Once sent, the PDF is stored and never rewritten.
In your client's language. Print an invoice in German or English and pick the e-mail theme that suits your brand.
See who has paid. Open, overdue and paid at a glance, with every invoice one click away.
Overdue is worked out for you. An invoice turns overdue the day after its due date, and your reminders take it from there.
Paid when the money arrives. Upload your bank statement and incoming payments mark the matching invoices as paid. Or mark them yourself.
Several at once. Select invoices to send a reminder, mark them as paid or download them in one go.
Checked before it leaves. Backbone tells you what an invoice still needs.
The mandatory details, checked as you write. Backbone knows what VAT law asks of an invoice in Germany (§ 14 UStG) and Austria (§ 11 UStG): your VAT number, the client's name and address, the service date or period and a quantity on every line. Reverse charge and small-business invoices get the note they need.
Warnings that name what is missing. No form to search through. Each warning says in plain words what the invoice still needs, and Fix adds it. You can still create the invoice anyway: Backbone warns, it never blocks.
Gap-free numbers, corrections done properly. Every invoice gets the next number in its series when it is issued. An issued invoice is never changed in place: Backbone cancels it with a credit note and opens a corrected copy.
E-invoices for business clients. Switch on ZUGFeRD and the PDF carries the invoice data in a machine-readable form. Save the format on the client and it is used every time. XRechnung is coming soon.
Scan to pay with QR code. Get paid faster.
Enabling QR codes on your invoices makes it easier for your clients to pay you.
- A standard EPC payment code (GiroCode) with IBAN, amount and invoice number
- Your client scans it in their banking app, nothing to type
- On for every invoice in your template, or per invoice
Integrate with your existing workflow. Write, send and follow up on invoices from the AI chat you already use.
Connect Backbone to your AI assistant once. From then on, it works with your clients, hours and invoices under the same rules as the app.
Built for
- Claude
- ChatGPT
- Gemini
- Grok
Try asking
- “Invoice Kinetik Studio for September's hours.”
- “Who hasn't paid yet?”
- “Send Nordlicht a reminder for RE-2026-0118.”
Anything that leaves your workspace, like an invoice or a reminder, waits for your OK in the chat.
How the AI connector worksLog 2 hours for the Nordlicht brand workshop yesterday, then write the September invoice for Kinetik Studio.
Both are done in Backbone.
- Time logged 2:00 h · Nordlicht GmbH · Brand workshop
- Invoice drafted RE-2026-0124 · Kinetik Studio · 42.5 h · €5,457.00
The invoice is still a draft. Shall I send it?
Send it.
Sent. If it is not paid on time, your dunning schedule takes over.
What's included
Everything from the first quote to the paid invoice.
Create invoices
- Edit right on the page
- Hours from Time as invoice lines
- Quotes that become invoices
- Credit notes and cancellations
- Recurring invoices
- Two templates, Basic and Minimal
- Invoices in German or English
Send and get paid
- E-mail with the PDF attached
- Send now or schedule for later
- Bank transfer with a QR code (EPC / GiroCode)
- ZUGFeRD e-invoices
- Mandatory details checked (§ 14 UStG, § 11 UStG)
- Gap-free numbering
Manage receivables
- Payment terms per client
- Automatic reminders and dunning notices
- Late-payment interest at the legal rate
- Pause reminders per invoice
- Open, overdue and paid at a glance
Report and reconcile
- Incoming payments mark invoices as paid
- Revenue per client: invoiced, paid, open
- Sent invoices in your bookkeeper export
- Sent PDFs stored, never rewritten
Invoicing questions
Yes. While you write, Backbone checks the details German and Austrian VAT law asks for (§14 UStG and §11 UStG), such as your VAT number, the client's address and the service date. If something is missing it tells you what and offers the fix. It warns, it never blocks: you decide. Your tax adviser stays the right person for tax questions.
Not in place, and that is on purpose: an issued invoice must stay as it was. When you edit or delete one, Backbone cancels it with a credit note and, if you like, opens a corrected copy with the next number. Both are filed for your bookkeeper.
ZUGFeRD, the PDF with machine-readable data inside that German businesses accept. XRechnung for German public clients and ebInterface for Austria are coming soon.
The invoice carries a standard EPC payment code (in Germany often called GiroCode) with your IBAN, the amount and the invoice number. Your client scans it in a banking app that reads these codes, and the transfer is filled in for them.
Yes, within two clean templates, Basic and Minimal: your logo, an accent colour and options such as the VAT number position, the service period or the payment details. What you see on the page is exactly the PDF your client gets.
Yes. Quotes, invoices and credit notes share the same editor, the same check and the same send button. A quote carries a valid-until date.
Send your first invoice today.
7 days free, card required. €0.00 due today.