Corporation Tax
CT600 filing checklist
What to gather before you open the Corporation Tax rail — periods, P&L, balance sheet, and prior filings.
Confirm the accounting period dates match Companies House and HMRC. Extended periods over twelve months usually need two CT600 submissions.
Enter turnover, costs, and balance sheet figures in pounds and pence — Hydra stores them as integer pence and builds the XML payload for you.
If an earlier period is overdue and filed elsewhere, mark it filed so the current period can proceed.