A cost centre is any part of your business you want to measure on its own: a branch, a project, a team, a vehicle. Tag your invoices and expenses to one and Finocket shows a profit & loss per centre, so you can see which parts actually make money.
Set up cost centres
It's an optional module: turn on Cost centres under Settings → Modules & features first. Then, on the Cost centres screen, add a centre for each thing you want to track, such as Andheri branch, Website project or Sales team. You can archive a centre you no longer use; its past tagging stays intact for old reports.
Tag as you go
Once the module is on, the invoice and expense forms show a Cost centre picker. Choose one when you raise an invoice or record an expense, or leave it blank and the entry counts as Unassigned, so nothing silently disappears from the totals.
Read the P&L per centre
The Cost centres screen carries the report: pick a date range and it lists every centre with its income, its expenses and the net, plus an Unassigned row and a grand total. It's the quickest way to answer “is this branch / project actually profitable?”
Access & control
Owners and assistants create centres and tag entries; an invited accountant reads the per-centre P&L read-only. If a teammate can't see the picker, check the module is enabled under Settings → Modules & features.