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

9 results for “new company”Clear search
23 February 2026

CT600 Filing for First-Time Directors — Complete Beginner Guide

New company director? This beginner-friendly guide explains CT600 corporation tax returns: what they are, when to file, what you need, and how to do it yourself.

ct600beginnersdirectorscorporation-taxguide
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
23 February 2026

Filing a CT600 for a Short Accounting Period: Complete Guide

Need to file a CT600 for a period shorter than 12 months? Learn when short periods happen, how tax is calculated, financial year splits, and how to avoid HMRC rejection errors.

CT600short accounting periodcorporation taxfinancial year splitHMRCnew companyyear-end change
22 February 2026

CT600 Filing for First-Time Directors: Complete Beginner's Guide

Never filed a CT600 before? This step-by-step guide explains everything first-time directors need to know — deadlines, documents, iXBRL, and how to file for £59.

CT600first-time directorbeginner guidecorporation taxnew company
22 February 2026

First Year Corporation Tax: What New Limited Companies Need to Know

Just incorporated? Here's your complete guide to corporation tax in your first year — registration, deadlines, what to file, and how to pay.

corporation taxnew companyfirst CT600limited companyHMRC registration
21 February 2026

What Happens If Your Accounting Period Is Longer Than 12 Months?

HMRC splits accounting periods over 12 months into two, requiring two CT600 returns. Learn how to calculate tax for each period.

accounting periodCT600corporation taxHMRCyear endnew company
21 February 2026

First Year Corporation Tax: A Complete Guide for New Companies

New limited company? Learn when to register for corporation tax, your first accounting period, filing deadlines, and how to avoid common first-year mistakes.

first year corporation taxnew companyCT600company registrationHMRC
21 February 2026

Just Incorporated? Your First CT600 Timeline: Key Dates You Can't Miss

New limited company timeline: when to register for corporation tax, your first accounting period, CT600 deadline, and payment date.

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19 February 2026

Your First Company Tax Return — A New Director's Guide to CT600 Filing

Just set up a limited company? Everything you need to know about your first CT600 — when it is due, what to include, and how to file.

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