A guided UK compliance process for small companies
A step-by-step CT600 + CS01 process that tells you what to do, when to do it, and what evidence to keep — without spreadsheets or guesswork.
Built for UK statutory compliance workflows
Designed for micro-companies filing CT600 and CS01 directly with HMRC and Companies House.
HMRC
CT600-aligned workflow
Evidence-ready checks
Companies House
CS01 guidance
Structured company data
ICO
Registration visibility
GDPR expansion-ready
UK Micro-Companies
Designed for director-run companies
Not enterprise accounting software
Guided Return Engine
Step-by-step CT600 and CS01 guidance
No blank forms. No guesswork.
Deadline Intelligence
Filing timeline awareness
Prevent missed submissions
Evidence Graph
Structured evidence tracking
Built-in audit trail
Data Reuse Architecture
Reuse company data across filings
Reduce duplication and errors
Find your company filing deadlines in seconds
Enter a company number or name to see upcoming Companies House and HMRC deadlines.
See upcoming:
- • Accounts filing deadlines
- • Confirmation statement dates
- • Corporation tax timelines
Company Deadline Finder
Search by company number or name, then jump into a company page with filing dates and the next obligation in view.
Next due
Accounts
Filing date snapshot
Follow-up
CS01
Confirmation statement
Tax
CT timeline
Payment and filing check
Trusted by UK company owners and accountants
BaseFiler helps directors and advisers understand deadlines, avoid penalties, and manage Companies House and tax obligations with confidence.
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Aleksandra Kowalska
Chartered Accountant
BaseFiler turns confusing compliance rules into simple workflows. The tools and guides make it much easier for directors to stay on top of Companies House and corporation tax deadlines.
Michael Turner
Owner-managed business director
BaseFiler gives us one calm place to check filing dates, understand the rule, and make sure recurring company obligations are not missed.
Stay on top of UK company compliance
Tools, guides, and workflows designed to help directors manage Companies House filings, corporation tax, and ongoing obligations.
- Companies House deadline calculators
- Corporation tax and CT600 guidance
- Confirmation statement reminders
- Practical guides for UK directors
Common UK company compliance questions
Short answers to the filing and deadline questions that come up most often for UK companies.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
You can use the BaseFiler tools and guides to determine your company deadlines and filing obligations.
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Move straight into the right part of BaseFiler depending on whether you need an answer now or the rule behind it.
Practical tools, guides, and workflow support for UK company compliance. Built to help directors, owner-managers, and advisers understand deadlines, filings, and recurring obligations more clearly.
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BaseFiler provides practical compliance guidance and workflow support for UK companies.
Built for UK company compliance.