CT600Filing

CT600Filing

Swift Catalyst Ltd
Transform SEC Filing

Transform SEC Filing

CompSci Resources
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About

CT600Filing is online Corporation Tax filing software for UK limited companies and accountancy practices. It guides users through a CT600 return, calculates Corporation Tax as figures are entered, and supports supplementary schedules such as capital allowances and R&D claims. The service generates iXBRL accounts using FRS 102 or FRS 105, or accepts accounts prepared elsewhere, then submits CT600 returns to HMRC and annual accounts to Companies House through their filing gateways. Users can prepare returns before paying, with one-off pricing per accounting period and plan options based on company size; accountant credit bundles are also available. A multi-company workspace provides filing status, deadlines, and submission history for client or group entities. The product runs online without desktop installation and serves company directors, bookkeepers, accountants, and tax professionals handling UK Corporation Tax filings.

About

CompSci understands that preparing your filings for submission with the SEC can be challenging. That’s why we’ve created a complete SEC reporting software solution that allows you to generate EDGAR-compliant HTML documents, accurately tag XBRL/iXBRL using the latest taxonomies, and generate XML filings using current technical specifications. We know that endless emails back and forth can be a hassle, so we want you to have more options when it comes time to file. We give you the tools and training you need to create compliant SEC filings. We create, tag, and process your required SEC filings for you.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

UK limited companies, accountants, sole traders acting through limited companies, and tax professionals.

Audience

Public companies and mutual funds looking for a platform to prepare SEC filings

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

£49/filing
Dormant & Nil Return: £49 + VAT per accounting period for a nil CT600 only. Micro: £79 + VAT; Small: £159 + VAT; Full Accounts: £299 + VAT per accounting period. Accountant bundles range from £399 + VAT for 10 credits to £1,099 + VAT for 100 credits (£10.99 per filing at 100 credits). Preparation is free; payment is due at submission. No subscription.
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Supported

Company Information

Swift Catalyst Ltd
Founded: 2026
United Kingdom
www.ct600filing.co.uk

Company Information

CompSci Resources
Founded: 1997
United States
www.compsciresources.com/transform-sec-reporting-software

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Credit Infonet

Categories

Corporate Tax Supported

Categories

E-Filing Supported

Integrations

Adobe Acrobat Not Supported
HTML Not Supported
Microsoft Excel Not Supported
Microsoft Word Not Supported

Integrations

Adobe Acrobat Supported
HTML Supported
Microsoft Excel Supported
Microsoft Word Supported
Claim CT600Filing and update features and information
Claim CT600Filing and update features and information
Claim Transform SEC Filing and update features and information
Claim Transform SEC Filing and update features and information