Every expense's path from entry to invoice.
Nothing skipped between the moment it's logged and the moment it's billed. An expense, once logged, finds its own way to the invoice.
1. From the first entry, every expense already knows where it's going.
2. Validated expenses are as reliable as validated hours.
3. Every billable dollar makes it into the total, without anyone chasing it down.
4. Nothing gets forgotten between the expense and the invoice.