Guides
What small companies in Germany should know about invoices, e-invoicing and working with an accountant, and what OpenBusinessERP does about it. With links to the law and the Federal Ministry of Finance. Not legal advice.
Seven topics
Invoices, VAT and bookkeeping
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E-invoicing
E-invoicing in Germany: what small businesses need to know
Receiving since 1 Jan 2025, issuing from 2027/2028: the German B2B e-invoice timeline, XRechnung vs ZUGFeRD, and what OpenBusinessERP supports.
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Invoice rules
Mandatory invoice details in Germany: a checklist
Every item § 14 (4) UStG requires on an invoice, the small-amount rule up to €250 and the small-business note, and how OpenBusinessERP fills each field.
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Accountant
Working with your accountant: DATEV export and SAF-T
What the DATEV EXTF export and SAF-T file from OpenBusinessERP contain, what your accountant receives, and the limits stated plainly.
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Switching
Switching from Excel or other software
Move customers, suppliers, products, opening balances and open items into OpenBusinessERP with the CSV/XLSX import wizard. Templates included.
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Bookkeeping rules
GoBD for small businesses: what the rules require
Unalterable, traceable, retained for 8 or 10 years: what the German GoBD expect from small firms, what a Verfahrensdokumentation is, and what software can and cannot do.
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VAT
Small-business VAT exemption (§ 19 UStG) from 2025
The €25,000 and €100,000 thresholds, what an invoice must say, and how OpenBusinessERP sets up a VAT-exempt small business.
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Switzerland
Swiss QR-bill: what it is and what OpenBusinessERP prints
The QR-bill replaced the orange and red payment slips in October 2022. QR-IBAN with QR reference, SCOR or no reference, and what the invoice slip in OpenBusinessERP does and does not do yet.
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