Accounting and invoicing for BSI, designed for seamless operational integration.
Double-entry bookkeeping with corrected Dutch invoice rules, shop paid-order inbox sync, BTW summaries, and a single-tenant Firestore model under your own user namespace.
Boekjaar
2026
Easter Egg
Legacy bookkeeping trauma, preserved for posterity.
Unlocked by clicking the boekjaar five times. BSI institutional memory matters.