Backbone for Austria

Built for Austria. Your back office that already knows the Austrian rules.

Austrian mandatory details, the small-business note and statutory late-payment interest are built in. You log the hours, Backbone checks, chases and packs everything into one ZIP for your tax adviser at month end. For freelancers and agencies, in German or English, in euros.

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7-day trial, card required.

All complete

  • Address and VAT ID (UID)
  • Service period
  • Consecutive invoice number
  • VAT 20%

In short

My goal is to optimise and automate back-office tasks so that we founders can focus on what matters most.

Automating back-office work with AI agents and AI integrations is the future – that's why I built Backbone!

LucaLuca · Founder, Backbone

Backbone is the agentic back office for teams and agents.

What does Backbone handle for Austrian businesses?

Austrian rules, built in. Backbone checks, calculates and keeps it for you.

Austrian rules in Backbone
RuleLawWhat Backbone does
Mandatory details before you issue§ 11 UStGwarns before you issue
Note for small businesses§ 6 (1) no. 27 UStGadds the note
Late-payment interest under Austrian law§ 456 UGBadds interest + €40
Issued means unchanged–cancels, never overwrites
Everything exportable§ 132 BAOZIP per month or year
Euros, German and English–invoice in German or English
§ 11 UStG

Mandatory details before you issue

Missing your address, your tax or VAT number, or your client's VAT ID on a reverse-charge invoice? Backbone tells you before the invoice goes out.

Invoice requirements in Austria

§ 6 (1) no. 27 UStG

Note for small businesses

Using the small-business exemption? Your invoices show no VAT and carry the Austrian note under § 6 (1) no. 27 UStG.

§ 456 UGB

Late-payment interest under Austrian law

Reminders use the statutory rate for Austria: between businesses 9.2 percentage points above the base rate (§ 456 UGB) plus a €40 flat fee (§ 458 UGB). Which law applies depends on your contract.

Late-payment interest

Issued means unchanged

Every issued invoice is stored once as a PDF. Corrections go through a cancellation and a new invoice, the original stays as it is.

§ 132 BAO

Everything exportable

A month or a whole year as a ZIP: invoices, receipts, bank statements and a CSV report. Your seven-year retention duty (§ 132 BAO) stays with you, and the files are yours any time.

Euros, German and English

Invoices in euros, the document in German or English depending on the client.

How Backbone does it

Say it in your AI chat. Backbone does it. In ChatGPT, Claude or another AI app with MCP support, or in the app. You approve before anything goes out.

  1. Track your time

    One sentence in the chat. The hours are in your week.

    In the chat

    Log 3:15 hours for Kinetik Studio, website relaunch: homepage wireframes, round two.

    Backbone connectorlog_time

    Logged.

    • Sun 27/09/2026 · Kinetik Studio · Website relaunch · 3:15 h
    • Homepage wireframes, round two
    In the app

  2. Create the invoice

    Say what goes on it. You approve.

    In the chat

    Write a draft invoice for Studio Nord: brand workshop, 16 hours at €95.

    Backbone connectorcreate_document

    Here's the draft.

    Open
    Invoice
    Studio Nord GmbH
    €1,808.80
    RE-2026-0142 · Issued 18/10/2026

    Looks good, issue it.

    Backbone connectorissue_document

    Issued as RE-2026-0142.

    In the app

  3. Send the reminder

    You approve. Only then does it go out.

    In the chat

    Send Nordlicht the 2nd notice now, not on the 25th.

    Backbone connectorsend_reminder
    Send reminder
    Invoice RE-2026-0118 · Due 27/09/2026
    2nd noticeDE
    To
    Nordlicht GmbH[email protected]
    Outstanding€4,280.00Late interest 10.52% · 21 days€25.91Flat fee€40.00Total€4,345.91
    Expires in 28 min28 min
    In the app

  4. Receipts matched automatically

    Upload the statement. Clear matches assign themselves.

    In the chat
    Erste_Bank_10-2026.csv

    Here's the Erste Bank statement for October.

    Backbone connectorupload_file

    Imported. Where receipt and payment clearly match, they're already matched:

    • Bürobedarf Lindner KG · 14/10/2026 · −€86.90
    • Café Morgenrot · 13/10/2026 · −€23.40
    • Fotostudio Weiss · 09/10/2026 · −€350.00
    • Druckerei Nordwerk GmbH · 02/10/2026 · −€149.00
    In the app

  5. Ask the company wiki

    Ask instead of searching. The answer comes from your wiki.

    In the chat

    How do we claim travel expenses?

    Backbone connectorsearch_wiki
    Backbone connectorread_wiki

    According to the wiki page "Travel expenses":

    • Upload receipts by the 5th of the following month
    • Train in 2nd class, fly only from 4 hours by train
    • Hotels up to €120 a night, Luca approves anything from €500
    In the app

  6. Off to your bookkeeper

    Month complete. One link, done.

    In the chat

    Send October to my tax adviser.

    Backbone connectorsend_to_bookkeeper
    Send to bookkeeper
    To
    Kanzlei Rehm & Partner[email protected]
    Period
    October 2026
    Contents
    48 receipts · 2 statements
    Expires in 28 min28 min
    In the app

How does a month in Backbone work?

From the hour to the export. Nothing retyped.

  1. Live · Track time

    Track hours

    Track hours with the timer at the top of every page or with one sentence in ChatGPT or Claude. Every hour lands with the right client and project, at their hourly rate.

  2. Live · Bill the hours

    Create & send invoices

    At month end, open hours become invoice lines in one click. Backbone checks the mandatory details under § 11 UStG, assigns the next number and e-mails the invoice as a PDF. If it stays unpaid, Backbone sends reminders on a schedule.

  3. Live · Hand over

    Bookkeeping

    Upload receipts as PDF or photo and Backbone matches them to your bank transactions. At month end a ZIP with invoices, receipts, statements and a CSV report goes to your accountant.

Time trackingInvoices & quotesExport for your bookkeeper

Guides for Austrian businesses

Guides for Austrian businesses. Short, with the law section and a check date.

  • Invoicing

    Invoice requirements in Austria

    What an Austrian invoice must show: the nine details under § 11 UStG, your client's VAT ID above €10,000, small-amount invoices up to €400, and the special cases that trip people up.

  • Payment reminders

    Late-payment interest in Austria and Germany

    Late-payment interest 2026: Germany 10.52 % (B2B) or 6.52 %, Austria 10.73 % (B2B) or 4 %. The formula, a worked example, the €40 flat fee and a template.

  • Bookkeeping

    Electronic receipts in Austria since 1 October 2026

    From 1 October 2026 a receipt in Austria counts as issued when the customer can read it on a screen on the spot. That is not a new obligation — and if you only invoice by bank transfer it does not apply to you at all.

Ask Billy about Backbone in Austria

Ask Billy

Hi, I'm Billy, the friendly ghost in Backbone. Ask me about this topic or how to get it done with Backbone.

Try 7 days

Try it with your next month of work. Hours in, invoice out, export ready.

Try for 7 daysSee pricing

€0.00 today · 7-day trial, card required · cancel monthly

Invoices & quotesDunningExport for your bookkeeperInvoicing from Germany? → Backbone for Germany