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

95 results for “filing”Clear search
22 February 2026

Filing Annual Accounts at Companies House: Complete Guide for Limited Companies

Everything you need to know about filing your company's annual accounts at Companies House — deadlines, formats, micro-entity vs small company, and penalties.

Companies Houseannual accountsiXBRLfilinglimited company
22 February 2026

What Happens After You File Your CT600? HMRC Processing Timeline

Filed your CT600? Here's what happens next — HMRC processing times, status updates, potential enquiries, and when to expect confirmation.

CT600HMRCfilingprocessing timecorporation tax
22 February 2026

12 Common CT600 Mistakes That Cost Directors Money (And How to Avoid Them)

Filing your own CT600? Avoid these 12 costly mistakes that catch first-time filers. From wrong accounting periods to missed reliefs — save time and tax.

CT600common mistakescorporation taxtax filing tipsdirectors
22 February 2026

How to Amend a CT600 Tax Return: Correcting Mistakes After Filing

Made an error on your CT600? Learn how to amend your corporation tax return within the 12-month deadline, what changes HMRC allows, and the step-by-step process.

CT600HMRCamendmentscorporation taxtax return corrections
22 February 2026

HMRC Free Filing Is Ending: What to Use Instead

HMRC's free CT600 filing service closes March 2026. Step-by-step guide to choosing a replacement and filing your Corporation Tax return.

hmrcct600free-filingreplacement2026
22 February 2026

Best Alternatives to HMRC's Free Filing Service in 2026

HMRC's free CT600 filing tool closes March 2026. Compare the best alternatives: Taxpipe (£59), accountants, and full accounting software for UK limited companies.

hmrcct600alternativessoftware2026
21 February 2026

CT600 Deadline: When to File Your Corporation Tax Return (and When to Pay)

When is your CT600 due? Filing deadlines, payment deadlines, and how they differ from Companies House deadlines. Avoid late penalties.

21 February 2026

HMRC Rejected Your CT600? Common Errors and How to Fix Them

CT600 rejected by HMRC? Here are the most common rejection reasons — BVR errors, XML failures, mismatched data — and step-by-step instructions to fix and resubmit.

ct600hmrcrejectederrorsbvrxml validationcorporation taxfilingresubmit
21 February 2026

iXBRL Tagging for Company Accounts and CT600: What You Need to Know

How iXBRL tagging works for CT600 filing — what gets tagged, HMRC requirements, common tagging errors, and how to generate iXBRL accounts without specialist software.

ixbrlinline xbrlct600company accountstagginghmrccorporation taxfiling
21 February 2026

Corporation Tax Deadlines 2026: When You Need to File and Pay

All corporation tax deadlines for 2026 — CT600 filing dates, payment due dates, and penalties for late filing. Key dates for UK limited companies.

corporation-taxdeadlines2026ct600penaltieshmrcfiling
21 February 2026

The Cheapest Way to File Your CT600 in the UK (2026)

Compare every option for filing your CT600 — from accountants to DIY software — ranked by cost. Find the cheapest way to file your company tax return.

ct600corporation-taxcost-comparisonfilinguk2026
21 February 2026

Taxfiler vs Taxpipe: Which CT600 Software Is Better for Your Company?

Compare Taxfiler and Taxpipe for CT600 filing — features, pricing, ease of use, and which suits your limited company best.

ct600comparisontaxfilertaxpipecorporation-taxsoftware
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