Do UK companies need to file income tax returns? What are the tax rates? When should I file?

The UK income tax rate is 19%. UK companies must submit their financial statements and pay any tax due within nine months of the end of their financial year (generally January 1 to December 31).

How do I get a UK company VAT number? What are the tax rates? What is the filing cycle?

TKEG Expat will apply for a VAT number for the client after the company has been registered, which usually takes one to two working weeks. The VAT rate in the UK is 20% and the filing cycle can be once a month or once every three months.

What is the penalty if a UK company files its VAT return late, and does it apply when the VAT due is zero?

Under HMRC's points-based system each late VAT submission adds one penalty point; once 4 points accumulate a GBP 200 penalty is charged, and each point expires 24 months after it is issued. The separate 'late payment' penalty only applies where VAT is actually owed - if the VAT due is zero there is no payment penalty once outstanding returns are filed. A late-submission penalty point can still accrue even when no VAT is owed.

Why does a newly incorporated UK company's first Corporation Tax filing cover more than one financial year?

A UK company's first Corporation Tax filing normally covers two periods at once: from the date of incorporation to the first accounting reference (financial year-end), plus the following full financial year, because the first accounting period can exceed 12 months. From the second filing onward, each CT600 return covers a single financial year.

Why don't the turnover/loss figures on a UK CT600 match the profit-and-loss accounts?

The figures can legitimately differ because a set of statutory accounts may cover a longer period (up to 18 months, e.g. an extended first period of around 13 months) while a single CT600 Corporation Tax return can only cover an accounting period of up to 12 months. A long accounting period is therefore split into two CT600 returns, so turnover, loss and box figures on each return align to different date ranges than the full P&L.

In the UK Corporation Tax return, do I need to manually tick the Marginal Relief box (Box 329)?

No. The Marginal Relief box (Box 329) is applied automatically by HMRC's electronic filing system based on the company's circumstances; it is not a manual choice by the filer. If the system applies it, the company is treated as falling within the small-profits marginal-relief range, which is common for small companies.

Does a dormant UK company still need to file with HMRC and Companies House?

A dormant UK company generally does not file a Corporation Tax return with HMRC, but HMRC must be notified of the dormant status. The company must still file with Companies House (dormant annual accounts and a confirmation statement) by their deadlines. The filing service is priced the same as for an active company except that no tax computation is required.

Might a UK company need to register for a VAT number based on its Corporation Tax return?

Yes. The figures in a company's Corporation Tax return may indicate that taxable turnover has reached a level requiring UK VAT registration, in which case the company should be advised to apply for a VAT number. VAT registration and Corporation Tax are assessed separately.

What happens if a UK company exceeds the VAT threshold but never registered for or filed VAT?

A UK company whose taxable turnover exceeds the VAT registration threshold but which has not registered for or filed VAT can incur substantial HMRC penalties. Planning to dissolve the company soon is not a valid reason to skip registration. Penalties may sometimes be argued or appealed with HMRC, but VAT registration should not be neglected once the threshold is met.

Accounting

UK Company Basic Corporate Income Tax Return

Name: UK Company Basic Corporate Income Tax Return
Brand: TKEG Expat ™ (Belgium)
Price: 350 GBP
Availability: InStock

Applicable country/region: GB - United Kingdom

English-speaking advisor

United Kingdom local setup support

Tailored service assessment

Unit PriceGBP 350 / Company

On-site presenceNot required

View Requirements

Response within 1 working hour on business days. We confirm applicability and estimated fees first.

Fully remote

Remotely Process Your UK Company Basic Corporate Income Tax Return

Ensure seamless compliance with UK financial regulations through our comprehensive UK Company Basic Accounting service. Designed specifically for limited companies operating within the United Kingdom, our service guarantees meticulous handling of your annual accounts and the filing of your United Kingdom Corporate Tax Return. With expertise in managing accounting periods and financial years, our professionals ensure that your submissions to both the UK Company House and HM Revenue and Customs (HMRC) are accurate and timely. If your British company has a trading turnover, additional fees may apply, ensuring precise calculation based on taxable profits. Benefit from potential tax relief and tax credits, tailored to companies with profits on the UK continental shelf. Our solution is ideal for both large companies and UK resident companies looking to optimize their accounting period for corporation tax, manage their tax liabilities, and file a company tax return efficiently. TKEG Expat provides a trusted solution to pay corporation tax without the stress. Stay ahead in your financial obligations and focus on growing your business with our expertly curated accounting service.

UK Company Basic Corporate Income Tax Return - Service Included

What's Included

Everything in this package

The line items below are already covered by the unit price. Anything marked "not included" can be added as a tailored extra.

Filing Annual Account with the UK Company House;
Included ×1.00
Filing Corporate Tax Return with the HMRC.
Included ×1.00

Good to know

Designed for companies with under $10 million annual turnovers, TKEG Expat ™ (Belgium) is a retail consulting division of THE KEITH & EVEN GROUP, focusing on providing budgeted solutions for companies seeking overseas market entry, company incorporation, assets allocation, and tax strategy.

Product Requirement

UK Company Basic Corporate Income Tax Return's Requirements

TKEG Expat ™ (Belgium) aims to provide the most straightforward and professional service to our clients. Please use this "Product Requirement Table" to determine if you meet the basic requirement of this product, and if you need services that are not included in this product.

Pricing accounting and tax reporting services based on the number of transactions

If the British company has trading turnover in this fiscal year, additional fees need to be paid based on the trading turnover amount.

Solution availableNot included in product

Learn More About How TKEG Expat Helped Other Businesses Succeed With UK Company Basic Corporate Income Tax Return

Case Study

United Kingdom Corporate Client

Start Date: April 14, 2026

Frequently Asked Questions

Jurisdiction Overview

About United Kingdom

The UK is a leading global financial center with a robust legal system, independent trade policies post-Brexit, and strong sectors in finance, technology, life sciences, and creative industries.

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United Kingdom Tax Brief

Data Source PwC World Tax Summary
OCED Statistic

Time of Update 4/02/2026