After registering a UK limited company, the first step is to check that its Companies House information is correct and securely store its incorporation documents and access codes.

You should then establish the company’s financial records, open a dedicated business account, record its ownership correctly and register for the relevant taxes before trading.

Acting in the right order helps protect the company’s legal identity and prevents missed tax or filing deadlines.

1. Check the Company’s Companies House Record

Search for the company on the public Companies House register and check:

  • Company name
  • Company registration number
  • Incorporation date
  • Registered office address
  • Registered email address
  • Directors
  • Shareholders
  • People with significant control
  • Statement of capital
  • SIC codes
  • Accounting reference date

Errors should be corrected promptly using the appropriate Companies House procedure.

Do not wait for the first confirmation statement to correct a director, PSC or registered office detail that must be reported separately.

2. Save the Incorporation Documents

Keep secure copies of the company’s:

  • Certificate of incorporation
  • Memorandum of association
  • Articles of association
  • Initial statement of capital
  • Incorporation application
  • Shareholder and PSC information
  • Director appointment details
  • Companies House correspondence

The certificate of incorporation confirms the company’s legal existence. The articles explain how it must be governed, while the statement of capital records the shares issued at formation.

These documents may be requested by banks, payment providers, accountants, investors, suppliers and regulatory authorities.

3. Secure the Companies House Authentication Code

Companies House normally sends an authentication code to the company’s registered office.

This code allows authorised users to submit filings for the company. It should be treated like an important password.

Directors should:

  • Store it securely
  • Restrict access
  • Avoid sending it through unsecured messages
  • Change it if an unauthorised person obtains it
  • Give it only to trusted filing agents

The company authentication code is different from a director’s identity verification personal code.

4. Complete Any Required Identity Verification

Companies House has introduced identity verification requirements for directors and people with significant control.

After verification, an individual receives a personal code. This code may be needed for company appointments, confirmation statements and other filings.

Directors should not publish or casually share their personal codes. They should provide them only when legitimately required for a Companies House filing.

5. Confirm That the Registered Office Is Working

The registered office must be an appropriate physical address in the same UK jurisdiction in which the company was incorporated.

For example:

  • An English and Welsh company must maintain its address in England or Wales.
  • A Scottish company must maintain its address in Scotland.
  • A Northern Irish company must maintain its address in Northern Ireland.

The company should ensure that:

  • Official mail is acknowledged.
  • Documents reach the directors promptly.
  • The address provider is authorised to receive mail.
  • HMRC letters are not mistaken for advertising.
  • The arrangement remains active throughout the company’s existence.

Missing a letter sent to the registered office does not normally remove the company’s obligation to act.

6. Watch for the Company’s UTR

HMRC normally sends the company’s Unique Taxpayer Reference to its registered office after incorporation.

The UTR is a ten-digit number used for the company’s Corporation Tax affairs.

It may be needed to:

  • Add Corporation Tax services
  • Access the company’s tax account
  • Appoint an accountant or tax agent
  • Submit a Company Tax Return
  • Contact HMRC about the company

The UTR belongs to the company and should not be confused with a director’s personal tax reference.

If the letter does not arrive, the company can request another copy from HMRC.

7. Create the Register of Members

Every limited company must maintain its own register of members.

For a company limited by shares, it should record:

  • Each shareholder’s name
  • Each shareholder’s address
  • The date they became a member
  • The shares held
  • The class of shares
  • The amount paid or treated as paid
  • The date a former member ceased to be a member

The register of members is generally the primary legal record of the company’s ownership.

It should be kept at the registered office or a registered single alternative inspection location.

8. Issue Share Certificates

A company limited by shares should issue share certificates to its shareholders within the applicable legal period.

Each certificate should normally show:

  • Company name
  • Company registration number
  • Shareholder’s name
  • Number of shares
  • Share class
  • Nominal value
  • Certificate number
  • Date of issue
  • Appropriate authorisation

The certificate should agree with the register of members, statement of capital and incorporation documents.

9. Record Payment for the Shares

If shares were issued as paid or partly paid, the company should record how the shareholder satisfied the amount due.

Payment might be made:

  • Into the company’s account
  • In cash, with suitable evidence
  • Through a qualifying non-cash contribution
  • Through another properly documented arrangement

Even where only a small nominal amount is due, it should be reflected accurately in the accounting records.

10. Open a Dedicated Business Account

A separate business account is not expressly compulsory for every limited company, but it is strongly recommended.

A limited company is legally separate from its directors and shareholders. Its money should therefore be kept separate from personal funds.

A dedicated account makes it easier to:

  • Receive customer payments
  • Pay suppliers
  • Track company expenses
  • Reconcile transactions
  • Prepare accounts
  • Calculate tax
  • Demonstrate the source of funds
  • Complete financial compliance checks

The account application may require incorporation documents, identity evidence, business activity details, expected transactions and information about directors, shareholders and PSCs.

11. Choose the Currencies the Company Needs

A company trading internationally should consider which currencies it expects to receive, hold, convert and send.

Relevant questions include:

  • Will customers pay in GBP, EUR or USD?
  • Will the company pay overseas suppliers?
  • How frequently will currencies be converted?
  • Will marketplaces pay in foreign currencies?
  • Does the company need local payment details?
  • Will it send international transfers through SWIFT or SEPA?

Using suitable business currency accounts can make transaction reconciliation clearer and reduce unnecessary conversions.

The company should ensure every account is opened in its registered name and included in its accounting records.

12. Set Up Bookkeeping Before Trading

Do not wait until the end of the financial year to organise the accounts.

The company should establish a system for recording:

  • Sales
  • Purchases
  • Expenses
  • Bank transactions
  • Assets
  • Liabilities
  • Stock
  • Payroll
  • Share capital
  • Director’s loans
  • Foreign currency transactions
  • VAT, where applicable

The system should preserve invoices, receipts, bank statements and supporting documents.

Directors can appoint an accountant or bookkeeper, but they remain responsible for ensuring that adequate records are maintained.

13. Record Pre-Trading Expenses Correctly

A director may pay incorporation or start-up costs personally before the business account is available.

These payments should be recorded as:

  • A company expense funded by the director; or
  • Money owed by the company through the director’s loan account.

Supporting receipts and invoices should be retained.

The director should not simply withdraw an approximate amount from the company later without documenting the reimbursement.

14. Decide When the Company Becomes Active

A new company can remain dormant after incorporation, but the directors should identify the date on which business activity begins.

Business activity can include:

  • Buying and selling goods
  • Providing services
  • Advertising
  • Employing someone
  • Renting property
  • Earning interest
  • Entering commercial transactions

This date is important because it can determine when the first Corporation Tax accounting period begins.

15. Register for Corporation Tax When Trading Starts

A company must normally tell HMRC within three months of becoming active and within the charge to Corporation Tax.

It can do this by adding Corporation Tax services to its business tax account.

The company will generally need:

  • Company registration number
  • UTR
  • Date business activity started
  • Accounting reference date
  • Description of its activities

HMRC confirms that the company should add Corporation Tax services when it begins doing business, which can include buying, selling, advertising, renting property or employing someone. See the official Corporation Tax registration guidance.

A company that remains dormant does not normally register as actively trading until its business activity begins.

16. Check Whether VAT Registration Is Required

A company does not automatically become VAT-registered when it is incorporated.

Registration is normally compulsory if:

  • VAT-taxable turnover for the previous 12 months exceeds the current registration threshold; or
  • The company expects to exceed the threshold within the next 30 days alone.

A company below the threshold may register voluntarily.

The directors should consider:

  • Expected turnover
  • Whether customers are VAT-registered
  • VAT on start-up costs
  • Pricing
  • Imports and exports
  • Online marketplace sales
  • Where goods are stored
  • International place-of-supply rules

If the company registers, it will need suitable digital VAT records and compatible filing software.

17. Register as an Employer Before Paying Staff

If the company will pay employees or directors through payroll, it may need to register with HMRC as an employer.

Registration should normally be completed before the first payday.

The company may then need to:

  • Operate PAYE
  • Deduct Income Tax
  • Calculate National Insurance
  • Submit payroll reports
  • Issue payslips
  • Manage workplace pensions
  • Report employee benefits
  • Retain payroll records

A director does not have to take a salary simply because the company has been incorporated. Payments should be planned and recorded according to their actual nature.

18. Arrange Required Business Insurance

The company should assess insurance before taking on employees, customers, vehicles, premises or stock.

Employers’ liability insurance will normally be compulsory when the company becomes an employer.

Other relevant cover may include:

  • Motor insurance
  • Public liability
  • Professional indemnity
  • Product liability
  • Cyber insurance
  • Business contents
  • Commercial property
  • Business interruption
  • Directors’ and officers’ insurance
  • Goods-in-transit insurance

A regulator, landlord, customer or marketplace may require cover even when it is not generally compulsory by law.

19. Check Licences and Regulatory Requirements

Incorporation does not automatically authorise the company to conduct every type of business.

Depending on its activities, it may need:

  • Local authority licences
  • Professional authorisation
  • Financial-services permission
  • Food-business registration
  • Alcohol or entertainment licences
  • Waste-carrier registration
  • Import or export registrations
  • Data protection registration
  • Industry-specific approvals
  • Anti-money-laundering supervision

These requirements should be checked before regulated activities begin.

20. Review Data Protection Obligations

A company handling personal information should determine its responsibilities under UK data protection law.

This can apply if it stores information about:

  • Customers
  • Employees
  • Website visitors
  • Newsletter subscribers
  • Suppliers
  • Applicants
  • Account users

The company may need:

  • A privacy notice
  • Cookie controls
  • Data-processing agreements
  • Security measures
  • Retention procedures
  • A process for data-access requests
  • Registration or payment of a data protection fee, unless exempt

Using an online platform does not transfer all data protection responsibility to the platform provider.

21. Put Contracts and Terms in the Company’s Name

Once incorporated, new business contracts should identify the limited company rather than the director personally.

Documents should normally show:

  • Registered company name
  • Company number
  • Registered office
  • Jurisdiction of registration
  • VAT number, if applicable
  • Relevant licence details

This applies to:

  • Customer contracts
  • Supplier agreements
  • Website terms
  • Invoices
  • Order forms
  • Leases
  • Software subscriptions
  • Employment contracts

A person signing before incorporation may become personally liable if the contract is not properly transferred or replaced.

22. Create a Compliance Calendar

The company should record its deadlines immediately after incorporation.

Important dates commonly include:

  • First confirmation statement: normally after the first 12-month review period, followed by a 14-day filing window
  • First annual accounts: normally 21 months after incorporation for a private company
  • Corporation Tax payment: normally nine months and one day after the relevant accounting period
  • Company Tax Return: normally 12 months after the accounting period
  • VAT returns: according to the company’s VAT periods
  • PAYE reports and payments: according to the payroll schedule
  • Insurance and licence renewals

The exact dates should be checked through Companies House and the company’s HMRC account.

23. Set Money Aside for Tax

Company revenue is not automatically available for the director to spend personally.

The company may need funds for:

  • Corporation Tax
  • VAT
  • PAYE
  • National Insurance
  • Supplier bills
  • Loan repayments
  • Annual compliance costs

Directors should consider holding expected tax funds separately from everyday operating money.

Dividends can only be paid from distributable profits and should be supported by appropriate accounts, minutes and dividend vouchers.

24. Keep Personal and Company Money Separate

A director should not treat the company’s account as a personal account.

Money taken from the company should be classified correctly as:

  • Salary
  • Dividend
  • Expense reimbursement
  • Director’s loan
  • Repayment of money previously lent
  • Another properly authorised payment

Personal spending paid by the company can create tax and director’s loan consequences.

Clear separation protects the company’s records and makes financial checks easier.

25. Understand the Director’s Ongoing Responsibility

A director must:

  • Follow the articles of association
  • Promote the success of the company
  • Exercise independent judgment
  • Use reasonable care, skill and diligence
  • Avoid or manage conflicts of interest
  • Declare interests in transactions
  • Keep adequate records
  • File accounts and returns
  • Pay company taxes
  • Keep Companies House information accurate

Professional advisers can help perform these tasks, but they do not replace the director’s legal responsibility. The government summarises these duties in its guidance on running a limited company.

First 30 Days Checklist

During the first month, the company should:

  • Check the Companies House record.
  • Save all incorporation documents.
  • Secure the authentication and personal codes.
  • Confirm that registered-office mail is monitored.
  • Obtain the company UTR.
  • Create the register of members.
  • Issue share certificates.
  • Record payment for issued shares.
  • Open a dedicated business account.
  • Set up bookkeeping.
  • Record pre-trading expenses.
  • Determine the trading start date.
  • Review Corporation Tax, VAT and PAYE requirements.
  • Check insurance and licensing obligations.
  • Record every statutory filing deadline.

Frequently Asked Questions

Can the company start trading immediately?

Yes, provided it has any licences, insurance, registrations and regulatory permissions required for its activities.

Does the company need an accountant immediately?

Not necessarily, but early advice can help establish suitable bookkeeping, tax and payment procedures. The company should not wait until its accounts are due before organising its records.

Must the company open a business account?

A dedicated account is not expressly compulsory in every case, but it is strongly recommended because the company is legally separate from its owners.

Must the company register for Corporation Tax immediately?

It should normally register within three months of becoming active. A company that remains dormant does not usually register as actively trading until its business activities begin.

Does the company need VAT registration?

Not automatically. Registration depends on taxable turnover and any special rules that apply to its transactions.

Can the director pay start-up expenses personally?

Yes, but the payments and supporting documents should be recorded through the company’s accounts, usually using a director’s loan account.

What is the most important first deadline?

The company should track every deadline. The first confirmation statement and first annual accounts are separate filings, while tax deadlines depend on when the company becomes active.

Final Answer

The first action after registering a UK limited company is to verify its Companies House information and securely store its incorporation documents, authentication code and identity verification details.

The company should then create its register of members, open a dedicated business account, establish bookkeeping and determine when trading begins. Once active, it must normally notify HMRC for Corporation Tax within three months.

Before accepting customers or staff, the directors should also review VAT, payroll, insurance, licensing and data protection requirements. Finally, every filing and tax deadline should be entered into a compliance calendar so the company remains in good standing.

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