Phase 2 explained the way a shop owner needs it: what to do, by when, and what happens when the internet is out.
4 min read
A restaurant issues invoice shapes a shop never sees: a table split five ways, an aggregator order the customer never paid you for, and a service charge that may or may not be VATable. Here is how each one works.
4 min read
A pharmacy invoice carries complications a normal shop does not: a patient share and an insurer share on one sale, zero-rated medicines beside standard-rated cosmetics, and batch and expiry on every line.
4 min read
Output VAT, input VAT, the return, and the four configuration mistakes that quietly produce the wrong number on every invoice you issue.
4 min read
A system migration touches the hash chain, your device certificates and your invoice archive. Here is the sequence that keeps all three intact, and the three mistakes that do not.
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