At month-end you know
what truly remains.
Income, expenses, receipts, and reserves in one place. With Pro, you create, export, and send invoices and e-invoices — GoBD-compliant, with forecasting.
Try Pro free for 7 days · no credit card
The finance area at a glance
Others show numbers. Klausi shows the result.
Receipts, invoices, sending, and travel expenses interlock — and you see your result month after month, including ahead.
01Receipts
Photograph the receipt. Done.
Photo or PDF in — Klausi reads amount, vendor, and date and suggests a category. You assign the project with one click — play the flow once.
Receipt #4221✓ detectedAmount · 48,90 €Café Central · 14.06.HospitalityStudio Hess✓ stored · GoBD02Invoices
Invoices your tax office likes.
With Pro: mandatory details under §14 UStG, sequential numbering, and export as PDF, XRechnung, and ZUGFeRD. You only take care of the work.
RE-2026-044PaidStudio Hess · Relaunch Q21.605 €03Sending
Invoice out — from your domain.
With Pro, Klausi sends the invoice straight to your client by email — PDF and e-invoice attached. Connect your own domain (DKIM) and you are the sender — not Klausi.
04Travel expenses
Travel expenses without paper chaos.
Trips, mileage, receipts, and per-diems come together in one flow — included in the free tier. The export per trip is ready before you need it.
From the beta
What first users appreciate about Klausi.
No big promises. Just clear reactions to a tool that works more calmly.
Feature overview
What the finance area can do. Honest, no fine print.
Overview
- Income, expenses, and balance per month
- Forecast and view of upcoming months
- Month switcher and account balances
Receipts
- Upload a photo or PDF
- Amount, vendor, and date are detected
- Category is suggested — you confirm
Invoices · Pro
- Mandatory details per §14 UStG
- Sequential numbers, status through paid
- Export as PDF, generate from hours
- E-invoice: XRechnung & ZUGFeRD (EN16931)
- Automatic email delivery (Pro)
Tax & small business
- Small-business mode (§19, no VAT)
- Tax & KSK as reserve categories
- VAT rates per invoice line
Travel expenses
- Log trips, mileage, and receipts
- Export per trip or period
- Included in the free tier
Export & tax advisor
- CSV export for your tax advisor
- Issued invoices immutable + log
- Data GDPR-compliant on EU servers
No more shoebox
Your numbers.
Without paper chaos.
Receipts, invoices, and reserves come together — so at month-end you don’t search, you see.
- Receipts, not a shoebox
- Audit-ready, without all-nighters
Belongs together
Numbers need context.
Hours, projects, and clients provide the data — finance makes the result visible.
Frequent questions
Questions about finance & bookkeeping.
Who is Klausi for?
For the self-employed, creatives, and small businesses who want their bookkeeping under control without chaos — and want to see what truly remains at month-end.
Is Klausi GoBD-compliant?
Issued invoices are immutable and logged, receipts are stored audit-proof. That keeps your records ready for a tax audit.
Does Klausi replace my tax advisor?
No — Klausi prepares. Receipts, invoices, and reports sit neatly together, and you export them as CSV. Your tax advisor gets numbers instead of notes.
Can I write invoices directly in Klausi?
Yes, with Klausi Pro. Mandatory details under §14 UStG, sequential numbering, and the status from draft to paid stay in one workflow. Creating, editing, and exporting as PDF or e-invoice are Pro features.
Does Klausi create e-invoices (XRechnung, ZUGFeRD)?
Yes, with Klausi Pro. Klausi generates EN16931-compliant e-invoices as XRechnung (XML) and ZUGFeRD (PDF with embedded XML). Generation, download, and email delivery are part of Pro and are also unlocked during the Pro trial.
Can I send invoices from my own domain?
Yes. With Pro, Klausi sends invoices directly by email. Connect your own domain (a one-time DKIM verification) and the email visibly comes from your address — not from Klausi. Until verification, Klausi sends from support@klausi.app.
Does import/export with DATEV or Lexoffice work?
Native DATEV or Lexoffice import/export is not available yet. DATEV export is coming soon. For your tax advisor, you currently export your numbers as CSV; existing data can be imported via CSV.
Is Klausi suitable for small businesses (§19) — and does it do the EÜR?
Yes, there’s a small-business mode (§19): invoices without VAT. Klausi doesn’t generate a finished EÜR — you export the basis for it as CSV.
What does the finance area cost?
The finance and invoice overview remains readable on Free. Creating, opening, or editing invoices, exporting them as PDF, XML, or ZUGFeRD, and sending them by email are part of Pro. Travel expenses remain free.