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# CT and iXBRL Accounts E-filing for HMRC

Seamless, secure, and compliant electronic filing for your corporation tax returns.

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Fast Processing Real-time validation and submission
Expert Support Dedicated filing specialists

### Electronic Filing Now Mandatory

HMRC no longer accepts paper submissions of Corporation Tax Returns, computations and accounts. All filings must now be submitted electronically in the required digital formats.

## Integrated E-filing Solution

At E-filing Specialist, we offer an integrated E-filing solution which enables you to upload your CT600 (and any supplementary pages), your computations of the Accounts and your accounts and seamlessly converts and bundles them into the required HMRC formats, flagging any errors before final submission.

We provide iXBRL tagging of financial statements and supply the relevant ready-to-use template for you to enter your presenter's credentials. If you don't yet have them, you can apply with Companies House.

## What You Must File

To make a valid electronic Corporation Tax return, you need to submit all three of the following simultaneously:

1

### Annual Accounts

Annual Accounts in iXBRL format

2

### Computation

Computation of the Accounts in iXBRL format

3

### CT600 Form

CT600 (and supplements) in HMRC XML format (or CSV that can be converted to XML)

## What We Provide

Comprehensive e-filing services to ensure your submissions are accurate, compliant and on time.

### iXBRL Tagging

Professional iXBRL tagging of financial statements to HMRC specifications.

### Presenter Templates

Ready-to-use templates for entering your presenter's credentials for HMRC submission.

### Late Submissions

Support for late or past year submissions when needed.

### Amended Returns

Handle amended account or tax return submissions efficiently.

### API Integration

Partner and API integrations available, subject to mutual agreement.

### E-filing Certificate

Receive proof of filing certificate with timestamp and HMRC markers upon successful submission.

## How It Works

Our streamlined process makes HMRC e-filing simple, secure and stress-free.

1

### Upload Your Documents

You upload the three required components (CT600 + supplements, computations, accounts).

2

### Format Conversion

We convert the CT600 from CSV (if needed) into HMRC's XML format.

3

### Real-time Validation

We validate all three documents against HMRC's business rules and check for errors in real time. You'll receive immediate alerts if there are issues, with pointers to where corrections are needed.

4

### Preview & Review

Once everything passes validation, you can preview the combined return (CT + accounts) in PDF form for your final review.

5

### Submit to HMRC

After your final review, click 'Submit' to send the complete package via HMRC's XML submission protocol.

6

### Receive Certificate

On successful submission, you receive a proof of E-filing certificate showing timestamp, what you filed, HMRC markers, etc.

## Trusted E-filing Specialists

E-filing Specialist has been providing compliant HMRC e-filing services since 2012, serving over 2,500 accountants, payroll teams and corporate finance departments across the UK.

Our London-based team combines deep technical expertise in iXBRL standards with practical knowledge of Corporation Tax filing requirements, ensuring your submissions are accurate, compliant and on time.

- Over 15,000 successful CT600 submissions
- ISO 27001 certified data security
- Dedicated UK-based support team
- 99.8% first-time acceptance rate

#### Trusted by Leading UK Businesses

BT Sainsbury's KPMG Deloitte PWC

## Transparent Pricing

Straightforward pricing with no hidden fees. Volume discounts available for multiple submissions.

### CT600 and iXBRL Accounts to HMRC

£250
Per Company Filing
One-off CT600 and iXBRL Accounts Filing
£250.00
One-off Non-recurring Setup Cost
£350.00

Volume Discount Available — Contact us for preferential rates on multiple company filings.

Get Started Today

## Get Started Today

Ready to simplify your HMRC e-filing? Contact our team for a no-obligation consultation.

### Send Us a Message

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#### Contact Details

Office Address 123 Edgware Road
London W2 2HZ
United Kingdom
Phone +44 20 7946 0000
Email sales@ableoffice.co.uk
Business Hours Monday - Friday
9:00 AM - 6:00 PM GMT