When to register for Corporation Tax

Companies and other organisations that are liable for Corporation Tax must ensure they register with HMRC at the correct time. Failing to register when required could result in missed filing obligations and potential penalties.

Most limited companies can register for Corporation Tax when they are

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Benefits of SEIS and EIS Advance Assurance

Businesses seeking investment through the Seed Enterprise Investment Scheme (SEIS) or Enterprise Investment Scheme (EIS) can benefit from obtaining advance assurance from HMRC before approaching investors.

Advance assurance allows a company to ask HMRC whether a proposed investment is likely to

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Official rate of interest for beneficial loans

Employers providing loans to employees or directors need to ensure they correctly calculate any taxable benefit using HMRC’s official rate of interest. Where a loan is provided at no interest or at a rate below the official rate, a taxable benefit may arise. These types of loans are referred to as

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Incorporation Relief may reduce your CGT bill

When a sole trader or partnership transfers a business to a limited company, a chargeable gain may arise. This is usually calculated by comparing the market value of the business assets at the date of incorporation with their original cost. Without any relief, this gain would normally be subject to

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Tax Diary September/October 2026

1 September 2026 – Due date for corporation tax due for the year ended 30 November 2025.

19 September 2026 – PAYE and NIC deductions due for month ended 5 September 2026. (If you pay your tax electronically the due date is 22 September 2026)

19 September 2026 – Filing deadline for the CIS300

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Amending a mistake on your tax return

What happens if you discover a mistake on your tax return? The good news is that errors can usually be corrected, but it is important to take action as soon as possible to avoid paying the wrong amount of tax or missing out on a possible refund.

If you realise that you have made an error after

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