Your business runs.Your bookkeeping now too.
I'm a tiler. For 30 years. And for 30 years I've been fighting the same chaos at the end of every month:
Where's that receipt from Bauhaus? The subcontractor still hasn't sent the invoice. Mileage log entries — don't exist. And the tax office wants the annual return — yesterday. Then you frantically look for an accountant, pay way too much in taxes and swear to yourself: Next year will be different. But it won't. Because the tools that exist weren't built for us. That's why, under the SIGMA LUXE technology project, I built a system that thinks like we do: simple, concrete and without unnecessary fuss.
Sound familiar?
- !End of month: hunting for receipts, sorting, swearing
- !Mileage log? Somewhere on a scrap of paper in the glove box
- !Subcontractor still hasn't sent the invoice with §13b
- !Tax exemption certificate expired — 15% deduction from the client
- !The accountant costs a fortune, and you still deliver half the data
- !In the end you pay more tax than necessary because nobody has the full picture
It's not laziness. It's a system that wasn't built for you.
Now you have BauFin — start saving your time.
Snap the receipt. Done.
No typing, no sorting. The Assistant reads everything — amount, date, category. You take a photo, BauFin does the rest.
Trips documented clearly.
Start, destination, kilometres, purpose — all in one app. BauFin helps keep trip records structured and traceable.
Invoice in 30 seconds.
Pick the client, enter the service, send. BauFin prepares the invoice data and supports PDF and e-invoice workflows.
Your money. At a glance.
What's coming in, what's going out, what's left. No spreadsheets, no formulas. A dashboard that shows you exactly where you stand.
Tax prep without the stress.
All receipts, trips and invoices are already there. DATEV export, EÜR generator and GDPdU export help with tax audits. The Financial Guide checks 21 optimization rules for construction trades in Germany and prices the full report transparently: 15 € per active rule. Your accountant gets cleaner data and a concrete question list.
“I built BauFin because I needed it myself. Not as a developer — as a tiler who just wanted peace from paperwork.”
Compliant. Documented. Ready.
Three anchors for the construction site: data protection, accounting, building contract.
DPA, DPIA and processing register prepared. Concierge handles Art. 15-22 requests for you.
Immutable storage, SHA-256, audit trail, 10-year archive.
Interim, final and measurement invoices with the right clauses.
Self-declaration. Procedural documentation, DPA and templates available on request.
We handle your data subject requests.
Your customer asks about their data (Art. 15-22 GDPR)? One click and we take over — reply within 30 days, fully compliant.
Customer asks
Email or letter requesting access, rectification or erasure of data.
You forward
One click in the panel — the request lands with us. No correspondence, no panic.
We reply
30-day deadline (Art. 12 GDPR). Four-eyes principle. Audit log. Full correspondence archived.
- On by default — opt-out during onboarding if you prefer to handle it yourself
- No surcharge (included in the Fundament 35€ plan)
- BfDI alert: 30-day breach = we know first
- 17 ready-made response templates in DE/PL/EN/RO/TR/HR
