Four sets of books that looked fine.
Each one was hiding something specific, and each teardown below walks it end to end: what the books said, what was actually true, and the exact rebuild. No listicles, no "5 bookkeeping tips." If a generalist could have written it, it doesn't go here.
The WIP rebuild
A contractor's P&L showed $105,600 of profit that was actually a liability. How over-billing hides inside healthy-looking books, and the schedule that exposes it.
The trust three-way
The bank rec was perfect and the trust account was still broken. Why only a three-way reconciliation proves whose money is whose.
The payout, unbundled
Inside one $14,000 Amazon deposit: $19,800 of real sales, $5,670 of fees the books never saw, and $130 of sales tax booked as income.
The deposit shortfall
$12,000 of tenant money spent without anyone stealing it. The slow mechanics of commingling, and the three-way tie-out that stops it.
Every teardown started as someone's normal-looking books.
Thirty minutes, your file on screen, and we'll tell you which of these patterns is already in it.