Guernsey • Fixed Price Service

Coporation Tax Returns Filing
In Guernsey

Coporation Tax Returns Filing in Guernsey is a critical obligation for every limited company operating within the island. The exact phrase Coporation Tax Returns Filing in Guernsey refers to the process of submitting a company tax return to HMRC, which must be completed even if your business has no tax to pay or makes a loss. This filing is separate from your annual accounts and requires careful preparation to avoid penalties and interest. By using the services of qualified professionals, you can ensure that your Coporation Tax Returns Filing in Guernsey is accurate, timely, and fully compliant with local regulations. The professionals listed on AccountingFirms include ACCA, ICAEW, and AAT qualified accountants who have the expertise to handle complex corporation tax matters. They can assist with company tax returns, CT600 tax returns, and company corporation tax filing, ensuring that all figures are correctly calculated and submitted to HMRC. Furthermore, these experts can advise on VAT, Self Assessment, and other tax obligations, helping you to manage your finances effectively. AccountingFirms, established in 2019 by ICAEW and ACCA accountants, is a trusted directory that connects you with verified, regulated accountants. You can browse local firms, compare providers, and read reviews to find the right professional for your needs. Whether you are a small start-up or a large corporation, using a qualified accountant for your Coporation Tax Returns Filing in Guernsey is a wise investment that saves time, reduces stress, and protects your business from costly errors.

Fixed price — no hidden fees5-day turnaroundACCA qualified100% online

Corporation Tax Returns

Corporation Tax Returns

£500+VAT
  • Year end accounts - to be filed to Companies House.
  • Year end accounts - to be filed to HM Revenue & Customs.
  • Company Tax Return - CT600.
  • Basic Tax Planning.
  • Telephone & Email Support
  • Fee Email Reminders.
  • Dedicated Accounts Manager.
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What's Included — Complete Transparency

✓ No hidden fees

Included in £500+VAT

  • Year end accounts - to be filed to Companies House.
  • Year end accounts - to be filed to HM Revenue & Customs.
  • Company Tax Return - CT600.
  • Basic Tax Planning.
  • Telephone & Email Support
  • Fee Email Reminders.
  • Dedicated Accounts Manager.

Available as add-ons

  • Company Dissolution (DS01) (£148.98+VAT)
  • Company Formation (Incorporation) (£200.00+VAT)
  • Confirmation Statement (CS01) (£92.00+VAT)
  • Director's Personal Self Assessment (SA100) (£199.00+VAT)
  • HMRC Enquiry & Letter Support (£98.98+VAT)
  • Limited Company Full Compliance Bundle (£99.00+VAT)
  • Micro Entity Accounts (£398.99+VAT)
  • Monthly Bookkeeping (£79.00+VAT)
  • P11D — Benefits in Kind (£49.00+VAT)
  • Payroll — Monthly (£28.99+VAT)
  • Registered Office Address (£120.00+VAT)
  • VAT Registration (£79.00+VAT)
  • VAT Return (per quarter) (£89.00+VAT)
  • Years End/Annual Accounts & Tax Return (£499.00+VAT)

Not sure if you need an add-on? Contact us first — we'll tell you honestly before you book.

How It Works — 3 Simple Steps

Fully online • No meetings needed
1

Book & Pay

Complete your booking online. Pay securely via Stripe. Receive instant confirmation with a document checklist.

2

Share Your Documents

Upload your P60, self-employment records and any other income details via our secure portal. No paperwork needed.

3

We File With HMRC

Your ACCA accountant prepares and submits your return within 5 working days. You receive your tax calculation.

Why Choose Accounting Firms?

✅

Fixed, Transparent Pricing

No hidden charges or unexpected bills. Our pricing is clear from the start, so you know exactly what's included before we begin.

⚡

Fast & Stress-Free Process

We make accounting simple. Upload your details, answer a few questions, and our team handles the paperwork and submissions for you.

👨‍💼

Qualified UK Accounting Experts

Work with experienced UK accountants who understand HMRC requirements and provide practical advice tailored to your situation.

🛡️

HMRC Compliance & Accuracy

From tax returns to annual accounts, we help ensure your records are prepared correctly and submitted on time to reduce errors and penalties.

📞

Dedicated Support When You Need It

Have questions? Our team is available to guide you through every step and explain things in plain English.

📈

More Than Filing — Business Growth Support

Beyond compliance, we help businesses improve financial visibility, manage cash flow, and make better decisions for long-term growth.

What Guernsey Clients Say

★ 4.9 from 312 reviews
★★★★★

"Fixed price meant no nasty surprises. My return was done in 3 days and Sarah caught expenses I'd missed that saved me £340 in tax. Will be back every year."

James O., Guernsey•IT ContractorVerified
★★★★★

"First time filing self assessment as a freelancer. I was dreading it. The whole process was explained clearly, everything was done online and I didn't have to do anything except provide my records."

Priya K., Guernsey•Graphic DesignerVerified
★★★★★

"Used to pay £350 to my high street accountant. Same quality service here for £149+VAT and I didn't even have to leave the house. Absolute no-brainer."

Marcus T., Guernsey•Personal TrainerVerified

HMRC Late Filing Penalties — What You Risk

£100

1 day late automatic penalty

+£900

£10/day for up to 90 days
(after 3 months)

+5%

of tax owed or £300 after 6 months

+5%

further surcharge after 12 months late

Avoid every single one of these penalties

Our ACCA accountant files your return in 5 days. Guaranteed on time.

Coporation Tax Returns Filing in Guernsey — Complete Guide 2026

Frequently asked questions

What is a CT600 tax return and who needs to file it?

A CT600 tax return is the form used by companies to report their Corporation Tax liabilities to HMRC. Every limited company in Guernsey must file a CT600 tax return, even if it has no taxable profits or is making a loss. The return must include details of income, gains, and allowable expenses. Filing is mandatory and must be done within twelve months of the end of your accounting period. A qualified accountant can help you prepare and submit this return accurately.

Why should I use an ACCA or ICAEW accountant for my company tax returns?

ACCA and ICAEW accountants are recognised for their high professional standards and in-depth knowledge of tax law. They undergo rigorous training and continuous development to stay updated with HMRC regulations. Using such a professional ensures that your company tax returns are prepared correctly, minimising the risk of errors, penalties, and HMRC investigations. They can also provide strategic tax planning advice to reduce your tax liability legally and efficiently.

What are the deadlines for filing Corporation Tax returns in Guernsey?

The deadline for filing your Corporation Tax return is twelve months after the end of your company's accounting period. For example, if your accounting period ends on 31 March, the return is due by 31 March the following year. Additionally, payment of Corporation Tax is usually due nine months and one day after the end of the accounting period. Missing these deadlines can result in automatic penalties, so it is essential to plan ahead and seek professional assistance.

How can AccountingFirms help me find an accountant in Guernsey?

AccountingFirms is a directory that lists verified and regulated accountants in Guernsey. You can browse through profiles of qualified professionals, compare their services, read client reviews, and contact them directly. The platform was established by ICAEW and ACCA accountants, ensuring that all listed firms meet high standards of professionalism and expertise. This makes it easy to find a suitable accountant for your corporation tax filing needs.

What is the difference between company tax returns and annual accounts?

Company tax returns (CT600) are submitted to HMRC to report your Corporation Tax liability, while annual accounts are prepared for your shareholders and Companies House. The tax return includes additional details such as capital allowances, loan relationships, and other tax-specific adjustments. Although both documents are based on the same financial information, they serve different purposes. An accountant can prepare both accurately, ensuring compliance with all legal requirements.

What happens if I miss the deadline for filing my company tax return?

If you miss the deadline for filing your company tax return, HMRC will issue automatic penalties. The initial penalty is £100, and further penalties can accrue if the return remains outstanding after three, six, and twelve months. Interest may also be charged on any unpaid Corporation Tax. To avoid these consequences, it is crucial to file on time. Engaging a qualified accountant can help you meet deadlines and avoid unnecessary penalties.

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