Knowledge Base - CT600 Corporation Tax Return

CT600 Corporation Tax Return

	What is a 1046 authentication error? When you receive a 1046 error message in TaxCalc (as shown above) after attempting to file tax return, it will be due to one of the following: HMRC do not recognise the filing credentials ( government gateway account user ID and password) which are entered in TaxCalc prior to the submission...
	13 May, 2025 Views: 133592

	CT600 losses and how to carry them back Carrying back company trading losses A company incurring a trading loss in an accounting period can make a claim to offset the loss against total profits of the previous 12 months after first having set the losses against any profits of the accounting period in which the loss occurred. The...
	25 Mar, 2025 Views: 75841

	How do I reclaim tax paid on loans to participators that have been repaid? If you’re a close company that’s previously paid tax on a loan to a participator, you may be able to reclaim that tax. Once the loan has been repaid, released or written off partially or in full, usually the tax can be either offset against current corporation tax liabilities or repaid...
	28 Mar, 2022 Views: 41161

	What exchange rate shall I use to convert foreign income into British pounds? When inputting any foreign income received on the tax return, this needs to be converted to the sterling equivalent (GBP) in order to declare the income correctly to HMRC. Historically, HMRC provided a centralised webpage containing the required monthly, average and spot currency exchange rates as...
	31 Dec, 2024 Views: 38317

	Why can't I print my document or create a PDF? If you're having problems printing or creating a PDF this could be due to a problem with the installation or configuration of the default PDF reader. If you're using TaxCalc 2015 or newer you can switch to TaxCalc Viewer instead. For more information read How do I enable TaxCalc Viewer? If your...
	28 Dec, 2018 Views: 35674

	How should I treat exempt dividend income/ distributions received from another company on a CT600 (previously called Franked Investment Income)? The treatment of dividend income received and where this information should be declared on the corporation tax return will depend on whether certain criteria is met (as laid out in the legislation here) which confirms some dividends/distributions are chargeable to corporation tax whilst others are...
	05 Dec, 2024 Views: 32730

	Tax Rates and Allowances Please select from below: Income Tax National Insurance Contributions Working and Child Tax Credits Child Benefit and Guardian's Allowance Tax Free Savings Account Fuel Benefit Charge Van Benefit Charge VAT Capital Allowances Corporation Tax Authorised Mileage Rates Pension Contributions...
	25 Mar, 2025 Views: 32242

	How do I enter R&D enhanced expenditure (for SMEs) on my CT600 - periods starting before 1 April 2024 R&D enhanced expenditure relief is available for periods starting before 1 April 2024. For periods starting after 1 April 2024 please refer to: How do I claim for research and development relief from 1 April 2024 When you make a claim for research and development (R&D) enhanced...
	11 Mar, 2025 Views: 28710

	How long do I have to file an amended CT600 return? Amended corporation tax returns can be filed online within 12 months of the original filing deadline. As the original filing deadline is normally 12 months after the accounting period end, you will usually have 2 years from the accounting period end to file an amended return. Once this submission...
	08 Sep, 2021 Views: 19488

	How to utilise Current and Brought forward losses on a Corporation Tax Return. This article will go through utilising current and brought forward losses on a CT600 tax return. Please select one of the following for instructions on how to do this: Offset current year losses Brought forward losses Offset current year losses To offset current year losses against profits...
	04 May, 2023 Views: 17503

	Inputting trading and property income on a CT600 Follow these steps to input trading and property income on a CT600 form: SimpleStep: CT600 Core > Trade and professional income > Tax adjusted profit/loss-disallowable expenditure HMRC Forms: CT600 Core > Computations > Tax adjusted profit/loss-disallowable expenditure Both...
	04 May, 2023 Views: 15619

	How do I declare to HMRC that a company has ceased trading? When a company ceases trading, HMRC generally considers it to be dormant for corporation tax purposes. You will need to inform HMRC that the company is not trading which can be done online or by phone or post. Once HMRC is informed, the company will not need to file a company tax return (CT600)...
	14 Feb, 2023 Views: 12516

	Do I need to attach accounts to my CT600? In most cases you do need to attach accounts to your CT600. For exceptions, see below. You can attach accounts in two formats: iXBRL – for most companies PDF – usually for charities only. Attaching iXBRL accounts iXBRL accounts need to be in .html or .xhtml. Support can supply you...
	04 May, 2023 Views: 12365

	How do I complete the CT600 for a long period of accounts? (Practice users) If your accounts cover a period of over 12 months, you'll need to complete the CT600 for two periods, as follows: Prepare the accounts for the full period and generate an XBRL version. Apportion the profit/loss into a 12-month period and the remaining days – using days that meet the HMRC...
	04 Jul, 2022 Views: 12183

	Where do I enter Filing Credentials for Tax Return Production? To enter your HMRC Self Assessment and Corporation Tax Filing Credentials, please follow the below instructions: For your Firm's details: Launch Admin Centre > Applications Click on Tax Return Production > Customise TaxCalc Click on Filing Credentials on the left Enter in your HMRC...
	27 Jun, 2024 Views: 11185