What must appear on an invoice
Numbering, dates, identifiers, VAT and totals: the checklist, with country specifics.
Practical guides
Clear, checked explanations of the job behind the tools: invoicing, VAT, construction estimates.
How to calculate VAT
Net to gross, gross to net, several rates, rounding: the formulas with examples.
BUILNORA
How many blocks and how much mortar for a wall
Net area, blocks per m², mortar, cement bags and waste: the method with an example.