Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
Share capital sits at the heart of how a UK limited company is owned, funded and governed. It represents the money shareholders have put into the business in exchange for shares, and it shapes everything from voting power to how profits are distributed.
Whether you are setting up a new company, thinking about bringing in an investor, or simply trying to make sense of the paperwork you signed when you incorporated, understanding share capital helps you make better decisions. This guide walks through what share capital actually is, how it differs from the older concept of authorised capital, how shares can be issued or altered after incorporation, and what the Companies Act 2006 requires along the way. The rules can feel technical, but the underlying ideas are practical and worth getting right.
Overview
Share capital is the total value of the shares a company has issued to its shareholders. Each share has a nominal value (often 1p or £1) and the sum of those nominal values, multiplied by the number of shares in issue, gives the company's issued share capital.
This figure appears in the company's statement of capital filed at Companies House and in its annual accounts. It is worth separating a few ideas that often get muddled. Issued share capital is the value of shares actually allotted to shareholders.
Paid-up share capital is the portion shareholders have actually paid for (shares can be issued partly paid). Called-up share capital is the amount the company has formally asked shareholders to pay. Older companies may still refer to authorised capital, which was the ceiling on what could be issued under the Companies Act 1985, but that concept was largely removed for companies formed under the Companies Act 2006. Most modern companies therefore have no fixed upper limit unless one has been written into their articles.
Key steps
Check your current position. Look at your company's statement of capital on the latest confirmation statement (CS01) and your articles of association. This tells you how many shares are in issue, who holds them, their nominal value, and whether your articles impose any cap on issuing further shares.
Decide what you want to change. Work out whether you want to issue new shares to bring in investment, transfer existing shares to a new shareholder, create a new class of shares with different rights, or reduce your share capital. Each route has different procedural and tax implications, so it pays to be clear on the goal before acting.
Get the right shareholder approvals. Most changes need a board resolution and, depending on what you are doing, an ordinary or special resolution of shareholders. Altering the articles always requires a special resolution (75% in favour). Existing shareholders may also have pre-emption rights that need to be waived before new shares can be allotted to someone else.
File the right forms with Companies House. Issuing new shares usually means filing an SH01 within one month. Other common filings include SH02 (subdivision or consolidation), SH03 and SH06 (share buybacks), and a copy of any special resolution. Your next confirmation statement should then reflect the updated statement of capital.
Update internal records. Update your statutory register of members, issue share certificates to new shareholders, and keep copies of all resolutions with the company's books. Good record keeping matters if the company is ever sold, audited, or investigated, and it avoids awkward gaps years down the line.
Q What is the difference between share capital and authorised capital?
Share capital is the value of shares a company has actually issued to its shareholders. Authorised capital was the historic upper limit on what a company was allowed to issue, set out in its memorandum under the old Companies Act 1985. For companies incorporated under the Companies Act 2006, authorised capital no longer automatically applies, although some companies choose to write a cap into their articles.
Q Can a UK company increase its share capital?
Yes. A company can issue new shares to existing or new shareholders, subject to the directors having authority to allot (either under section 550 for single-class private companies or given by shareholder resolution). Pre-emption rights under section 561 may also need to be disapplied. Once shares are issued, form SH01 should be filed with Companies House within one month.
Q Can a company reduce its share capital?
Yes, but the process is more involved. A private limited company can reduce its share capital using a solvency statement signed by the directors plus a special resolution, under sections 641 to 644 of the Companies Act 2006. Public companies must go through the court. Reducing capital has creditor-protection implications, so the procedure must be followed carefully.
Q What are pre-emption rights?
Pre-emption rights give existing shareholders first refusal when new shares are issued, so their percentage holding is not diluted without consent. Statutory pre-emption rights sit in section 561 of the Companies Act 2006, and the articles or a shareholders' agreement may add further rights. These can be disapplied by special resolution where the company wants to issue shares to a new investor.
Q What is the nominal value of a share?
The nominal value (also called par value) is the minimum amount a share must be paid up to, usually a small figure such as 1p or u00a31. It is not the market value. A share can be issued at a premium above its nominal value, and the extra amount is recorded in the share premium account, which has its own rules about how it can be used.
Q Do I need to tell Companies House when shares are transferred?
A share transfer between existing and new shareholders does not require an immediate filing, but the change should be reflected in the company's register of members and reported on the next confirmation statement. Stamp duty may apply if the consideration is above the current threshold, so check gov.uk for the latest rate and process.
Q What is a statement of capital?
A statement of capital is a snapshot of a company's issued share capital at a given point in time. It shows the total number of shares, their aggregate nominal value, the rights attached to each class, and the amount paid and unpaid on each share. It is filed on incorporation, with confirmation statements, and whenever share capital changes.
Unsure what a share change means for your company?
Share capital decisions affect voting control, dividends and future fundraising, and getting the paperwork right at Companies House matters. An experienced legal adviser can help you think through the options based on what you describe on the call, so you feel confident before you file anything.
✓A plain-English explanation of how share capital works in your setup
✓Practical perspective on issuing, transferring or altering shares based on what you describe
✓Clarity on what resolutions and filings are likely to be needed
✓Answers to your specific questions about your company's shares
Personal call · For information only · Independent advisers
Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.