US tax
For UK founders with a Delaware C corp or a US LLC.
US taxTax · United Kingdom
An accountant for limited company tax, accounts and VAT in the UK.
Excello acts as the accountant for limited company owners in the UK, preparing the corporation tax return, annual accounts, confirmation statement and VAT returns each company owes.
Payroll and the directors' Self Assessment returns sit alongside them, all prepared from books closed inside your own QuickBooks, Xero or Odoo.
- Prepared
- Company tax CT600
- Companies House accounts and statement
- VAT Making Tax Digital
- Quoted before work starts
The UK work Excello prepares for a limited company
Scope
A UK limited company answers to two bodies: HMRC for tax and Companies House for its public record. This is everything each one expects, and when.
| Work | Who needs it | When | What Excello prepares |
|---|---|---|---|
| Corporation tax registration | New limited companies | Within three months of starting to do business | The registration details prepared |
| Corporation tax return (CT600) | Every limited company | 12 months after the accounting period ends | The return and tax computation prepared from closed books |
| Annual accounts | Every limited company | 9 months after the year end; 21 months after incorporation for the first | Statutory accounts prepared for Companies House and HMRC |
| Confirmation statement | Every limited company | At least once a year, within 14 days of the review period end | Company details checked and the statement prepared |
| VAT registration | Businesses with taxable turnover over £90,000 in 12 months | Within 30 days of the end of the month it is passed | The application prepared |
| VAT returns | VAT-registered businesses | One month and 7 days after each period, usually quarterly | Prepared from the digital records in your books |
| Payroll (PAYE) | Employers | Every payday; PAYE paid by the 22nd of the next month | Pay runs and PAYE figures prepared and checked for your team to approve |
| Directors' Self Assessment | Directors with dividends or other untaxed income | 31 January after the tax year ends | The personal return prepared |
The limited company tax return: CT600 filing and corporation tax
Corporation tax
Source: GOV.UK, Corporation Tax rates and reliefs; Company Tax Returns; HMRC. Checked 22 September 2026.
Annual accounts and the confirmation statement
Companies House
Annual accounts
A private company's annual accounts go to Companies House 9 months after its year end. The first accounts are due 21 months after incorporation.
Late accounts cost a private company £150 for up to a month, rising to £375, £750 and £1,500 after six months, and the penalty doubles if they are late two years in a row. From 1 April 2028, accounts must be filed through commercial software.
Confirmation statement
The confirmation statement confirms the company's details, officers and shareholders are up to date. It is filed at least once a year, within 14 days of the end of its review period, for a fee of £50 online or £110 on paper.
Excello checks the details against your records each year and prepares the statement.
Source: GOV.UK and Companies House, annual accounts penalties and confirmation statement guidance. Checked 22 September 2026.
VAT return filing under Making Tax Digital, and payroll
VAT and PAYE
VAT
A business registers for VAT once its taxable turnover passes £90,000 in any 12 months, within 30 days of the end of the month it went over.
Most businesses send a VAT return every three months, due with the payment one month and 7 days after the period ends. Under Making Tax Digital, the records behind it must be digital and the return sent from compatible software. Excello prepares each return from the reconciled records in your books.
Payroll
An employer reports every pay run to HMRC in a Full Payment Submission on or before payday, and pays the PAYE and National Insurance owed by the 22nd of the following month.
Excello prepares and checks each pay run and its PAYE figures for your team to approve, and reconciles payroll into the books every month. How payroll works with Excello.
Source: GOV.UK, VAT registration, VAT Returns and running payroll guidance. Checked 22 September 2026.
A UK company's tax year, date by date
An example
For a company with a 31 March 2026 year end, quarterly VAT and a director who takes dividends, the year looks like this.
| Date | What is due |
|---|---|
| Each month, by the 22nd | PAYE and National Insurance for the previous tax month |
| 7 May, 7 August, 7 November, 7 February | VAT returns and payments, for quarters ending in March, June, September and December |
| 31 December 2026 | Annual accounts to Companies House |
| 1 January 2027 | Corporation tax paid |
| 31 January 2027 | Directors' Self Assessment returns and tax for 2025 to 2026 |
| 31 March 2027 | Company Tax Return (CT600) |
The confirmation statement falls on the anniversary of incorporation, whatever the year end.
How UK tax works with Excello
Four steps
-
Step 01
Scope
Your year end, VAT status, payroll and directors, then a written quote.
-
Step 02
Books closed
Each month closed within five business days, so VAT and year-end work start from reconciled figures.
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Step 03
Prepared
Returns, accounts and statements prepared and walked through with you.
-
Step 04
You approve
You review and approve everything before its deadline.
Directors often need a Self Assessment return as well, most often to report dividends. Excello works as the self assessment accountant for your directors in the same engagement, with each return due by 31 January.
Tax in other countries
UAE tax
Corporate tax and VAT for UAE companies.
UAE taxBookkeeping
The monthly books every return is built from.
BookkeepingFrequently asked questions
What does an accountant for a limited company do?
An accountant for a limited company prepares its corporation tax return, annual accounts and confirmation statement. Most also handle VAT returns, payroll and the directors' Self Assessment. Excello prepares all of these from books closed monthly.
When is a limited company tax return due?
The Company Tax Return, form CT600, is due 12 months after the end of the accounting period it covers. The corporation tax itself is usually due earlier: 9 months and 1 day after the period ends.
What is the UK corporation tax rate?
The main rate of corporation tax is 25%, for profits over £250,000. Profits of £50,000 or less pay the small profits rate of 19%, and profits between the two get Marginal Relief, which gives a rate in between.
What happens if company accounts are filed late?
Companies House charges a private company £150 for accounts up to a month late, rising to £375, £750 and £1,500 for more than six months. The penalty doubles if the accounts are late two years in a row.
What is Making Tax Digital for VAT?
Making Tax Digital is HMRC's rule that VAT-registered businesses keep digital records and send VAT returns from compatible software. It has applied to every VAT-registered business since April 2022, whatever its turnover.
Do company directors need a Self Assessment return?
Many do, most often to report dividends or other income that has not been taxed through payroll. The online return for the 2025 to 2026 tax year is due by 31 January 2027, and so is the tax.