1 December 2025 – Due date for Corporation Tax payable for the year ended 28 February 2025.

19 December 2025 – PAYE and NIC deductions due for month ended 5 December 2025. (If you pay your tax electronically the due date is 22 December 2025).

19 December 2025 – Filing deadline for the CIS300 monthly return for the month ended 5 December 2025. 

19 December 2025 – CIS tax deducted for the month ended 5 December 2025 is payable by today.

30 December 2025 – Deadline for filing 2024-25 self-assessment tax returns online to include a claim for under payments to be collected via tax code in 2026-27.

1 January 2026 – Due date for Corporation Tax due for the year ended 31 March 2025.

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

19 January 2026 – Filing deadline for the CIS300 monthly return for the month ended 5 January 2026. 

19 January 2026 – CIS tax deducted for the month ended 5 January 2026 is payable by today.

31 January 2026 – Last day to file 2023-24 self-assessment tax returns online.

31 January 2026 – Balance of self-assessment tax owing for 2024-25 due to be settled on or before today unless you have elected to extend this deadline by formal agreement with HMRC. Also due is any first payment on account for 2025-26.

Where cryptoasset tokens (also known as cryptocurrency) are held personally, this investment is usually undertaken in the hope of making a capital appreciation in its value or to make particular purchases. 

HMRC is clear that these holdings will usually be subject to Capital Gains Tax (CGT) if there is a gain when disposing of these assets by: 

• selling tokens
• exchanging tokens for a different type of cryptoasset
• using tokens to pay for goods or services
• giving away tokens to another person (unless it is a gift to your spouse, civil partner or charity)

If you have unpaid tax on cryptoasset gains, there is a specific voluntary disclosure service that can be used. This service can be used for exchange tokens (such as bitcoin), NFTs (non-fungible tokens) and utility tokens.

Before making a voluntary disclosure, you will need to: 

• collect information about the cryptoassets you owe tax on; 
• work out how many years you need to declare unpaid tax for; 
• work out the CGT and Income Tax you owe; and 
• work out any interest you owe. 
• work out any penalties you will be liable for 

The number of years you must disclose unpaid tax depends on why it was not paid correctly. If you took reasonable care but still underpaid, you must disclose and pay for the last four years. If you did not take care, you must disclose for six years. However, if you deliberately failed to pay or knowingly gave incorrect information, you must disclose and pay for up to 20 years of unpaid tax.

Your disclosure must include all unpaid tax, interest and penalties. You can use HMRC’s calculators to work out the correct interest and penalty amounts. Once you submit your disclosure, HMRC will usually issue a payment reference number within 15 working days, and you must pay the full amount within 30 days of submitting a disclosure.

After reviewing your disclosure, HMRC will either send you a letter confirming acceptance of your offer or contact you if it cannot be accepted. If HMRC finds that you knowingly provided false or incorrect information, they may reopen your tax affairs and can impose higher penalties.

If your business imports goods into the UK, it is important to be familiar with the Customs Declaration Service and to ensure that any duty payments are made correctly and on time to avoid delays, interest or penalties.

The Customs Declaration Service (CDS) is a specially designed IT platform used for completing customs declarations for businesses that import or export goods from the UK. All electronic import declarations must be submitted through the CDS.

When you import goods into the UK using the CDS, you must pay any tax due promptly. Payments should reach HMRC by the deadline, and if that falls on a weekend or bank holiday then the payment must arrive by the previous working day.

Late payments may result in interest charges and / or penalties. You will need your unique 16-character reference number starting with “CDSI,” which is specific to each declaration, to make a payment. Using the wrong number can delay the release of your goods.

Payment can be made online through your bank account or with a debit or corporate credit card (personal credit cards are not accepted). Online bank payments are usually instant but may take up to two hours to appear, while card payments are recorded on the date made.

Payments can also be made by bank transfer. CHAPS or Faster Payments usually arrive the same or next day, while BACS take about three working days. UK payments should go to HMRC’s Customs Duty Schemes account (sort code 08 32 10, account number 14077970). Overseas payments must be made in GBP. There are also options to pay by cheque, allowing three working days for delivery. If there are payment issues or further advice is required, you can contact HMRC’s National Clearance Hub.

There is a trivial benefit-in-kind (BiK) exemption that applies to small, non-cash gifts (such as a bottle of wine or a bouquet of flowers) that are occasionally given to employees.

This exemption enables employers to offer modest, tax-efficient rewards while simplifying the administration of BiKs. The BiK exemption allows businesses to recognise employees in a small way without creating additional reporting obligations or tax liabilities.

Trivial benefits are a simple and effective way to provide gestures of goodwill or recognition, as long as they are not given as a reward for work performed or duties carried out. Typical qualifying occasions include events such as a marriage, the birth of a child or other personal landmarks.

Employers also benefit since these trivial BiKs do not need to be included in PAYE settlement agreements or reported on P11D forms, and they are exempt from Class 1A National Insurance contributions.

The tax exemption applies to trivial BiKs where the benefit:

• costs £50 or less;
• is not cash or a cash voucher;
• is not a reward for work or performance; and
• is not in the terms of an employee’s contract.

Trivial benefits provided through a salary sacrifice arrangement are not exempt from tax. In such cases, the employer must report them on form P11D, using the higher of the amount of salary the employee gave up, or the cost of the trivial benefit provided.

For directors or officeholders of close companies (and their families), there is an annual cap of £300 on trivial benefit gifts. The £50 limit still applies per gift but allows up to £300 of non-cash benefits per person each year. If any single gift exceeds £50, the full value becomes taxable.

A Company Voluntary Arrangement (also known as a CVA) is a special arrangement that allows a company with debt problems or that is insolvent to reach a voluntary agreement to pay its business creditors over a fixed period of time.

The arrangement is similar to the Individual Voluntary Arrangement (IVA) that can be used by a sole-trader or self-employed person who is unable to pay their debts.

An application for a CVA can only be made with the agreement of all directors of the company in question or all of the partners of a limited liability partnership (LLP). A CVA can only be created by using the services of an insolvency practitioner. They will be responsible for set up and administration of the arrangement.

Once an insolvency practitioner has been appointed the following steps will take place:

1. The insolvency practitioner will work out an ‘arrangement’ covering the amount of debt the company can pay and a payment schedule. They must do this within a month of being appointed.
2. The insolvency practitioner will write to creditors about the arrangement and invite them to vote on it.
3. A CVA must be approved by creditors representing at least 75% of the debt value of those who vote (rather than 75% of the total overall debt).

If the agreement is approved and the company does not meet the terms of the CVA then any of the creditors can apply to have the business wound up.