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Plain-English guides to UK Corporation Tax and CT600 filing.

1 result for “first return”Clear search
23 February 2026

Filing Your First CT600: A Step-by-Step Guide for New Companies

Just incorporated a UK limited company? Here's everything you need to know about filing your first CT600 Corporation Tax return — from registering with HMRC to submitting your return.

CT600new companyfirst returncorporation taxHMRCguidelimited company