CT600Filing

CT600Filing

Swift Catalyst Ltd
Prelude

Prelude

Diamond Discovery Software
CT600Filing Prelude

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CT600Filing:

About

CT600Filing is online Corporation Tax filing software for UK limited companies, directors and accountants. A guided, step-by-step process helps you prepare your CT600 and iXBRL accounts, then file the return with HMRC and the accounts with Companies House from one account. Corporation Tax, including marginal relief, is calculated as you go, and errors are checked before you submit. Every submission is tracked, with HMRC’s response and a PDF of the return to download. Supports dormant, FRS 105 micro, FRS 102 Section 1A small and full FRS 102 accounts, for periods up to 18 months. Prepare free and pay only when you submit. Prices start at £49 + VAT for a nil CT600 with dormant accounts. Companies House filing is included on every plan. No subscription, nothing to install, and free amendments to the same return. Accountants get white-label filing under their practice name, one dashboard for all clients, CSV trial balance import and credit bundles from £10.99 per filing.
Prelude:

About

You will find Prelude so easy to use, you can be started in minutes. Create professional invoices in seconds and email them directly to your customers. All your data is stored securely in the cloud. Spend less time accounting and more time on your business. Prepare your practice and your clients for HMRC’s Making Tax Digital, to ensure you maintain and grow your business through and beyond this change. Prelude can be incorporated into your website with your personalised branding. You invoice your clients when they use Prelude. This is the essence for the features you will find in Prelude. Feature-rich to satisfy your accounting needs, but intuitive enough so that you spend less time on your accounting. Setting up and getting used to new accounting software can be a daunting prospect. So we have made it easy with a configuration checklist to guide you through the set-up, step by step.
CT600Filing:

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
Prelude:

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
CT600Filing:

Audience

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

Audience

Companies of all sizes interested in cloud accounting software
CT600Filing:

Support

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

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported
CT600Filing:

API

Offers API Not Supported
Prelude:

API

Offers API Not Supported
CT600Filing:

Screenshots and Videos

Prelude:

Screenshots and Videos

CT600Filing:

Pricing

£49/filing
CT600Filing starts from £49 + VAT per return. Prepare free, pay when you file. No subscription.

All plans include CT600 filing to HMRC and accounts submission to Companies House:

Dormant & Nil Return – £49 + VAT: Nil CT600 to HMRC and dormant accounts filing to Companies House.

Micro Company – £79 + VAT: CT600, FRS 105 iXBRL accounts and Companies House filing.

Small Company – £159 + VAT: CT600, FRS 102 Section 1A iXBRL accounts and Companies House filing.

Medium & Large – £299 + VAT: CT600, full FRS 102 accounts and Companies House filing.

Each payment covers one return, with unlimited amendments for that return. Returns are submitted directly to HMRC, and accounts are filed with Companies House.

Accountants and bookkeepers: Filing credits start at £399 + VAT for 10 filings, reducing to £10.99 per filing with the 100-credit bundle. Credits are valid for 12 months.

No monthly subscription. Prepare your return free and pay only when ready to submit.
Free Version Not Supported
Free Trial Not Supported
Prelude:

Pricing

$12.93 per month
Free Version Not Supported
Free Trial Supported
CT600Filing:

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
Prelude:

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
CT600Filing:

Training

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

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
CT600Filing:

Company Information

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

Company Information

Diamond Discovery Software
Founded: 1987
United Kingdom
www.preludeaccounts.com
CT600Filing:

Alternatives

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Prelude:

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CT600Filing:
Prelude:
CT600Filing:
Alphatax

Alphatax

Tax Systems
Prelude:
CT600Filing:

Categories

Corporate Tax Supported
Prelude:

Categories

Accounting Supported
CT600Filing:

Corporate Tax Features

Compliance Management Not Supported
Data Import / Export Supported
Data Verification Supported
Electronic Filing Supported
Exception Notification Not Supported
For Nonprofits Not Supported
For Partnerships Not Supported
K-1 Reporting Not Supported
Payroll & Employer Forms Not Supported
Status Tracking Supported
Tax Planning Not Supported
Prelude:

Accounting Features

Accounts Payable Not Supported
Accounts Receivable Not Supported
Bank Reconciliation Not Supported
Billing & Invoicing Supported
Cash Management Not Supported
CPA Firms Not Supported
Cryptocurrency Support Not Supported
Expense Tracking Not Supported
Fixed Asset Management Not Supported
Fund Accounting Not Supported
General Ledger Not Supported
Government Not Supported
Multi-Currency Not Supported
Nonprofits Not Supported
Payroll Management Not Supported
Project Accounting Not Supported
Purchase Orders Not Supported
Tax Management Supported
CT600Filing:

Integrations

StockIQ Not Supported
Prelude:

Integrations

StockIQ Supported
CT600Filing:
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Prelude:
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