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Find out when you can expect to receive a reply from HMRC to a query or request you've made.
Find and use tools and calculators that will help you work out your tax.
Find out how to get a certificate of residence as an individual, company or organisation so you do not get taxed twice on foreign income.
You can reduce your Corporation Tax bill through Marginal Relief from 1 April 2023 if your company’s profits are lower than £250,000.
Find out what information you need to send HMRC before you make a claim for R&D Corporation Tax relief.
Find out what R&D tax relief is and if your project qualifies for Corporation Tax relief.
How to work out payments and when you should make them if your company’s annual taxable profits are between £1.5 million and £20 million.
If you're a close company or a tax agent, find out how to claim relief for loans that have been repaid, released, or written off.
Find recognised suppliers and software for Corporation Tax returns and supplementary pages.
Find out about being 'active', trading and non-trading, and being dormant if you’re a new or existing company or organisation.
How to work out and claim Corporation Tax relief on trading losses.
Check if you need to submit a claim notification form before you claim R&D Corporation Tax relief, what information you’ll need to provide and how to send it.
Find out about Corporation Tax relief you can claim for costs on R&D if you're a small and medium-sized enterprise with an accounting period that starts before 1 April 2024.
How to complete your CT600 Company Tax Return form for Corporation Tax and what information you need to include.
Find out about best practice approaches to transfer pricing to lower risk and avoid common mistakes.
Find out if you can use the free online filing service to file your Company Tax Return with HMRC and accounts with Companies House.
Find out about the type of losses your company can offset against profits in future accounting periods.
Find out if you can claim a Research and Development (R&D) tax credit for accounting periods beginning before 1 April 2024.
Guidance for companies to work out and claim relief from Corporation Tax on terminal losses, capital losses and property income losses.
Rates, allowances and limits for Corporation Tax.
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