Status in view
Draft, open, paid — click the invoice through its lifecycle. The server assigns the number at issue time.
Receipts
Photograph the receipt.
Done.
Photo or PDF in — Klausi reads amount, vendor, and date and suggests a category; you assign project and client with one click. Play the flow once:
- Amount, vendor, and date read automatically
- Category as a suggestion, project assignment in one click
- Stored audit-proof — GoBD-compliant
Receipt #4221✓ detected
Amount · 48,90 €Café Central · 14.06.
HospitalityStudio Hess
✓ stored · GoBD
From the beta
What first users appreciate about Klausi.
No big promises. Just clear reactions to a tool that works more calmly.
Invoices
Invoices your tax office likes.
Numbering, mandatory details, archiving, and e-invoicing are automatically correct — you only take care of the work.
§14 UStG automatically
Mandatory details, sequential numbering, and an immutable log — without you thinking about it.
Generated from hours
Tracked time becomes line items. The draft is ready before you need it.
E-invoice included
XRechnung and ZUGFeRD per EN16931 — generated and downloaded for free. With Pro, Klausi sends them by email automatically, PDF and XML attached.
Sending
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 and the email comes from you, not from Klausi.
- Sent straight from Klausi — PDF and e-invoice attached
- Connect your own domain (DKIM) — you are the sender
- Status jumps to “sent” automatically
Sending is part of Pro. Until your domain is verified, Klausi sends from support@klausi.app.
Travel expenses
Travel expenses without
paper chaos.
Trips, mileage, receipts, and per-diems come together in one flow. The export is ready before you need it.
- Mileage and stops remain traceable
- Receipts attach directly to the trip
- PDF export per trip — export-ready in one click
Compliance
Built for the tax audit. Not for the pitch.
Solo professionals cannot afford bookkeeping mistakes. Klausi meets the standards your tax office expects.
GoBD-compliant
Receipts stored audit-proof and logged tamper-resistant.
Nothing disappears
Issued invoices are immutable, every change is logged — and nothing is deleted silently.
Export for your tax advisor
Clean CSV exports for your tax advisor — so follow-up questions never come up.
EU hosting
Your financial data lives on EU servers. No US cloud required.
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
- 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.
AI assistantAn assistant that knows your business.Ask your numbers, have your day planned — Klausi works with your data.Learn moreTime trackingTime that assigns itself.Timer, weekly calendar, and reports — connected to project and service.Learn moreProjects & tasksEvery project knows where it stands.Tasks, budget, and client context — connected instead of scattered.Learn more
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 §14 UStG mandatory details, sequential numbering, and status from draft to paid — exportable as PDF and as an e-invoice.
Does Klausi create e-invoices (XRechnung, ZUGFeRD)?
Yes. Klausi generates EN16931-compliant e-invoices as XRechnung (XML) and as ZUGFeRD (PDF with embedded XML). Generating and downloading are free; with Pro, Klausi also sends the invoice to your client by email automatically — PDF and XML attached.
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?
An overview is visible for free; full finance management (receipts, invoices, accounts) belongs to the Pro modules. Travel expenses are free. The pricing page has the details.