Knowledge
Inspection intervals, independence under NIV Art. 33, the Saldosteuersatz (the flat-rate VAT method), the QR-bill, the contractor's lien. Written down by people who have built these rules into software.
A quick calculation
Articles
The articles are being written here: on the periodic inspection, on independence under NIV Art. 33, on the Saldosteuersatz, on the QR-bill and on the four-month deadline for the contractor's lien. Until they are ready, the three calculators above answer the same questions faster.
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