Taxpipe
PricingCalculatorBlogHMRC Free FilingJoin waitlist
T
Taxpipe

File your UK Corporation Tax CT600 return online. Simple, affordable, HMRC-compliant.

Product

  • Pricing
  • Tax calculator
  • HMRC free filing

Support

  • Help Centre
  • FAQ
  • Contact us
  • Blog
  • info@taxpipe.co.uk

Legal

  • Privacy policy
  • Terms of service
  • Cookie policy

© 2026 Taxpipe. All rights reserved.

HMRC-authorised CT600 filing service

← Back to Taxpipe

Blog

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

19 February 2026

How to Register for Corporation Tax: Step-by-Step Guide for New Companies

Complete guide to registering your limited company for corporation tax with HMRC. Deadlines, what you need, UTR numbers, and what happens after registration.

19 February 2026

How to Amend a CT600 — Correcting Mistakes on Your Corporation Tax Return

Filed your CT600 and spotted an error? Here's how to amend your Corporation Tax return, the time limits, and what happens if HMRC finds the mistake first.

CT600amendmentscorporation taxHMRCmistakes
19 February 2026

Directors' Loan Accounts and Your CT600 — What Every Director Needs to Know

What is a directors' loan account? How does it affect your CT600? When does Section 455 tax apply? A complete guide for small company directors.

directors loanCT600section 455corporation taxoverdrawn DLA
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.

ct600new companyfirst tax returncorporation taxbeginners
19 February 2026

Capital Allowances for Small Companies — AIA, Full Expensing & Cars

How to claim capital allowances on your CT600. AIA, full expensing, car rules, and writing down allowances for small companies.

capital allowancesAIAcorporation taxct600tax deductions
19 February 2026

Corporation Tax Allowable Expenses — The Complete List for Small Companies

Complete list of expenses your limited company can claim against Corporation Tax — from office costs to travel, with real examples.

corporation taxallowable expensestax deductionssmall business
19 February 2026

Accounting Periods Explained — When Does Your Corporation Tax Year Start and End?

What is an accounting period for Corporation Tax? How to work out your dates, what happens in your first year, and how periods affect your CT600 deadlines.

accounting periodcorporation taxct600deadlinesfirst year
19 February 2026

How to Pay Corporation Tax to HMRC — All Payment Methods Explained

Step-by-step guide to paying your Corporation Tax bill. Bank details, payment references, deadlines, and what happens if you pay late.

corporation taxHMRCpaymenttax paymentdeadlines
19 February 2026

10 Common CT600 Mistakes (and How to Avoid Them)

The most frequent errors company directors make when filing their CT600. From wrong dates to missing boxes — and how to get it right first time.

ct600mistakescorporation taxfiling tips
19 February 2026

Dormant Company CT600 Filing: Do You Still Need to File? (Yes — Here's How)

Your dormant company still needs to file a CT600 with HMRC. Learn what counts as dormant, how to file, and the fastest way to stay compliant for just £59.

dormant companyCT600corporation taxHMRCfilingcompliance
12 February 2026

How to File a CT600 Online — Step by Step Guide

Learn how to file your CT600 corporation tax return online step by step. Plain English guide covering deadlines, common mistakes and what you need to start.

CT600GuideFiling
12 February 2026

Corporation Tax Rates 2025/26 - Marginal Relief Calculator

Current UK corporation tax rates and marginal relief.

Corporation TaxTax Rates
← PreviousPage 18 of 19Next →