Self-billed invoices waste time and money.
Donnerstag.ai saves both.
A missing delivery note, a wrong quantity, a typo and your self-billed invoice gets stuck.
Donnerstag.ai spots the error instantly, so you get paid what you’re owed.
Without Donnerstag.ai
With Donnerstag.ai
Wasted time
Manually checking self-billed invoices eats up valuable hours.
Time saved
Matching in seconds not hours.
No clarity
Endless back-and-forth due to missing or messy data.
Full transparency
Every mismatch detected. Everything traceable.
Cash flow chaos
Payment delays caused by errors and lack of visibility.
Cash flow under control
Clean data. Faster payouts.
✓ Step-by-step onboarding
✓ Support from our team
✓ GDPR compliant
1. Register
Create your account. No setup, no fuss.

2. Upload your self-billed invoice
Just drag & drop your PDF.

3. Compare, monitor, fix cash flow
We match effort vs. payout instantly.

Self-billed invoice matching. Done right.
Donnerstag.ai automates the matching between job orders, service records and self-billed invoices. 100% digital, traceable and audit-proof.
✓ Step-by-step onboarding
✓ Support from our team
✓ GDPR compliant

Compatible with 1,000+ self-billed invoice formats including those from the biggest clients.
How it works: fast, smart, automated.





Everything in view
All your self-billed invoices in one place - paid, pending, or off.

Error detection in seconds
Our AI spots quantity mismatches, missing docs, and pricing errors fast.

Fewer follow-ups
No chasing. Data is structured, traceable, and ready to go.

Faster payouts
Clean records = quicker payments. Every time.

Automated Communication
Missing info? We auto-request it for you. No emails, no calls.
AI does the matching: Your work is matched with self-billed invoices automatically and traceably. You stay in control: See every service, payment, and discrepancy finally, with a system behind it.
B2B services
You provide the service. We match the invoice. Automated, traceable, payable.
Logistics & Freight Forwarding
Drive miles. We reconcile the self-billed invoices behind them.
Wholesale and retail
You deliver. We bring clarity and liquidity.
Personalmanagement
Lots of hours, little visibility? We fix the chaos and speed up your payouts.
What Donnerstag.ai does for you
“Donnerstag.ai revealed issues we didn’t even know existed.
The test setup was impressive — we now save time daily and avoid costly errors.”
CFO, supplier in the automotive industry