Author: Glenn

Current estimates suggest that there are around 5.6 million businesses operating in the UK. This figure comes from the Department for Business and Trade and the Office for National Statistics. What stands out is that most of these businesses are very small. The vast majority are run by one person, without employees, either as sole traders or small limited companies. Only a small proportion of the total business population consists of medium or large organisations, yet those larger firms account for a significant share of total employment and economic output.

Around 4.1 million of the 5.6 million businesses are sole traders. These include contractors, tradespeople, freelance workers, independent professionals, and small retail or service businesses. A further 1.1 million are limited companies. The remainder are partnerships or other legal forms. Approximately three quarters of all UK businesses have no employees at all. They are operated directly by the owner.

The UK has a relatively low barrier to starting a business. Registering as self-employed is straightforward, and forming a limited company is inexpensive and quick. This ease of entry encourages individuals to test ideas, create income streams, or change the way they work. Digital platforms have also expanded opportunities. For example, selling through online marketplaces, providing services remotely, or trading through social media channels has become increasingly common. These models enable people to run small businesses from home, with minimal overheads.

There is also a lifestyle element. Many individuals value autonomy over working hours and location. Self-employment or small business ownership provides this flexibility. Some move into business ownership after redundancy or a change in circumstances, while others start with the intention to grow something long term.

Although many of these businesses operate on a modest scale, collectively they play a major role in the economy. They support local employment, supply chains, and community activity. They bring specialist skills to market and allow rapid adaptation when customer needs change. Small businesses tend to be agile and close to their customers.

However, small businesses also face challenges. These include managing cash flow, understanding tax obligations, accessing finance, and dealing with administrative requirements. The owner often carries full responsibility, which can create pressure. Support, planning, and advice can therefore have a very positive impact.

The main message is that small business is central to the UK economy. It is diverse, active, and resilient, and it continues to shape how people work and earn today.

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.

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.

Most employees will come across forms such as the P45, P11D and P60 during their working life, and knowing what each one is for can make it much easier to keep track of your tax position.

A P45 is issued to employees who leave their employment or lose their job. The P45 shows how much tax you have paid during the current tax year (6 April to 5 April). The form has four parts: your employer sends Part 1 to HMRC, gives you Part 1A for your records, and you pass Parts 2 and 3 to your new employer or Jobcentre Plus. Employers are legally required to issue a P45. If you do not have one, for example when starting your first job then your new employer will ask for details via a starter checklist to determine your correct tax code.

A P11D form is used by employers to list certain ‘benefits in kind’ provided to directors or employees. P11D forms are used to provide information to HMRC on all Benefits in Kind (BiKs), including those under the Optional Remuneration Arrangements (OpRAs) unless the employer has registered to payroll benefits. Payrolling benefits removes the requirement to complete a P11D for the selected benefits. The completed P11D form is submitted annually to HMRC. The deadline for submitting the 2025-26 form is 6 July 2026. The form can be submitted using commercial software or via HMRC’s PAYE online service.

The P60 is a statement issued to employees after the end of each tax year that shows the amount of tax they have paid on their salary. Employers can provide the P60 form on paper or electronically. Employees should ensure they keep their P60s in a safe place as it is an important record of the amount of tax paid. The deadline for employers to provide employees with a copy of their P60 form for the 2025-26 tax year is 31 May 2026. A P60 must be given to all employees that were on the payroll on the last day of the 2025-26 tax year.

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.