CT600Filing

CT600Filing

Swift Catalyst Ltd
CT600Filing Shareflo

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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.
Shareflo:

About

Shareflo is cap table and share scheme software for UK companies. Shares, options, vesting and documents live in one record, with self-service portals for employees and investors. It runs EMI schemes end to end: pre-drafted rules and award agreements, grants, vesting, exercises and leavers. Filings are outputs of the same record — SH01s, ERS returns and share conversions, kept in step with Companies House and HMRC. Every award keeps its approval record and documents, dated when it happened rather than reconstructed years later, so diligence is an export rather than a fortnight of archaeology. Your finance, HR and legal teams get their own logins with role-limited access. Flo, the built-in AI agent, advises on share schemes and compliance, and can carry out actions on your confirmation. An MCP connector lets you query and update your cap table from Claude. Free up to 20 stakeholders, no minimum term, full data export any time — including if you leave.
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
Shareflo:

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.
Shareflo:

Audience

UK private companies that grant share options, from pre-seed startups to established SMEs. Used by founders, CFOs, finance and HR leads, company secretaries, and their accountants and solicitors.
CT600Filing:

Support

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

Support

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

API

Offers API Not Supported
Shareflo:

API

Offers API Not Supported
CT600Filing:

Screenshots and Videos

Shareflo:

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
Shareflo:

Pricing

£5
per stakeholder per month
Free Version 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
Shareflo:

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
Shareflo:

Training

Documentation 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
Shareflo:

Company Information

Shareflo
Founded: 2025
United Kingdom
www.shareflo.co.uk
CT600Filing:

Alternatives

Taxley

Taxley

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Shareflo:

Alternatives

CT600Filing:
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Shareflo:
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CT600Filing:
Alphatax

Alphatax

Tax Systems
Shareflo:
CT600Filing:

Categories

Corporate Tax Supported
Shareflo:

Categories

Equity Management 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
Shareflo:

Equity Management Features

Cap Table Management Supported
Deal Management Not Supported
Document Storage Supported
ESOP Management Supported
Financial Modeling Not Supported
Options Management Supported
Participant Portal Supported
Portfolio Management Supported
Private Equity Not Supported
Public Equity Supported
Valuation Management Supported
Vesting Management Supported
VSOP Management Not Supported
CT600Filing:

Integrations

Claude Not Supported
Claude Code Not Supported
Claude Duet Not Supported
Claude for Legal Not Supported
Shareflo:

Integrations

Claude Supported
Claude Code Supported
Claude Duet Supported
Claude for Legal Supported
CT600Filing:
Claim CT600Filing and update features and information
Claim CT600Filing and update features and information
Shareflo:
Claim Shareflo and update features and information
Claim Shareflo and update features and information