Even though many of the headline tax changes are aimed at individuals and digital reporting, there are important developments that affect limited companies and business owners in 2026 — and they’re not always obvious unless you’re planning ahead.
At Hammond & Co, we’re seeing increasing concern from directors around digital compliance, filing systems, and HMRC’s growing expectations around transparency and record keeping.
The key issue isn’t necessarily new taxes.
It’s the move towards a far more digital and data-driven compliance environment.
1. Digital Filing Changes for Limited Companies
HMRC and Companies House are closing the old joint online filing service from 31 March 2026.
From 1 April 2026, UK limited companies will need to:
- File annual accounts with Companies House
- File Company Tax Returns (CT600) with HMRC
using commercial software or agent software rather than the free HMRC combined portal.
This matters because:
- The existing free filing service will no longer be available
- Businesses need suitable filing software or accountant access in place
- Historic returns may become harder to access later if not downloaded in advance
At Hammond & Co, we recommend reviewing filing systems well before the deadline to avoid rushed transitions.
Action Point
Check now whether your accounting software — or your accountant — can handle both Companies House accounts filing and CT600 submissions digitally from April 2026 onwards.
2. Digital Records for Self Assessment (Indirect Impact on Directors)
While Making Tax Digital for Corporation Tax is not currently being introduced for limited companies, HMRC is rolling out Making Tax Digital for Income Tax Self Assessment (MTD ITSA) from 6 April 2026.
Although this does not directly change Corporation Tax filing, it does affect many directors personally.
This is particularly relevant for:
- Directors with personal Self Assessment returns
- Shareholder-directors receiving dividends and other income
- Individuals with self-employed or consultancy income alongside their company
Key Threshold
From April 2026, individuals with:
- £50,000+ of combined self-employed and/or property income
will generally be required to:
- Keep digital records
- Use compatible software
- Submit quarterly updates to HMRC
Action Point
If directors currently rely on annual personal tax reporting, they may need to prepare for quarterly digital submissions instead.
That means software, systems, and better ongoing record keeping become increasingly important.
3. Record Keeping & Software Expectations
Even where new mandates do not directly apply to limited companies, HMRC’s broader expectations are clearly shifting.
By 2026, HMRC increasingly expects:
- Accurate digital records for all tax obligations
- Approved software-based submissions
- Reduced reliance on paper systems and disconnected spreadsheets
This forms part of HMRC’s wider digital strategy focused on:
- Reducing errors
- Improving transparency
- Speeding up processing
- Integrating digital tax accounts
At Hammond & Co, we increasingly see businesses exposed not because of deliberate non-compliance — but because their systems cannot clearly support the figures submitted.
4. Penalty & Compliance Culture Is Changing
HMRC’s digital systems are increasingly tied to automated compliance monitoring.
Points-Based Penalties
HMRC continues moving towards points-based penalty systems for late or missing digital submissions.
That means:
- Late filings may generate penalty points
- Repeated issues can trigger fines and escalation
- Timely digital reporting becomes increasingly important
This represents a broader cultural shift towards ongoing compliance rather than year-end corrections.
For directors and business owners, organisation and consistency now matter more than ever.
5. Standard Filing Deadlines Remain the Same
The underlying filing deadlines for limited companies are not changing.
Businesses must still generally file:
- Accounts to Companies House within 9 months of year-end
- Company Tax Returns (CT600) within 12 months of the accounting period end
- Corporation Tax payments within 9 months and 1 day after the period end
What changes from April 2026 is primarily the filing method — not the dates themselves.
6. HMRC’s Broader Expectations in 2026
Beyond individual filing rules, HMRC’s wider expectations for business owners continue to evolve.
Accurate Digital Records
Businesses are increasingly expected to maintain software-based records that are audit-ready and easy to reconcile.
Proactive Tax Planning
As HMRC gains access to more integrated data, reactive “year-end fixes” become riskier.
Separation Between Personal & Business Finances
Clear distinction between company transactions and personal spending is becoming increasingly important as HMRC connects more data sources.
Forward-Looking Compliance
HMRC’s focus is shifting away from historical clean-up exercises and towards ongoing, real-time compliance readiness.
This mirrors HMRC’s wider digital transformation and risk-profiling approach.
What Business Owners Should Focus On Now
Businesses preparing properly for 2026 are already:
- Moving to commercial or accountant-supported filing systems
- Downloading and archiving historic filings
- Reviewing directors’ personal tax obligations
- Improving digital bookkeeping processes
- Creating clearer separation between personal and company finances
- Preparing for more regular reporting expectations
At Hammond & Co, we help directors and limited companies prepare practical systems that reduce compliance risk while improving financial visibility.
That includes support with:
- Digital bookkeeping systems
- Companies House and HMRC filing preparation
- Director tax planning
- VAT and payroll compliance
- Ongoing reporting and financial clarity
The objective is not complexity for the sake of it.
It’s building systems that allow business owners to operate confidently in a more digital tax environment.
Final Thought
In 2026, HMRC is not simply focused on whether businesses file on time.
It is increasingly focused on:
- Data quality
- Digital records
- Transparency
- Consistency
- Ongoing compliance behaviour
Businesses that prepare early tend to experience:
- Fewer compliance problems
- Better financial visibility
- Reduced stress around deadlines
- Stronger long-term operational control
The businesses most exposed in 2026 are unlikely to be the ones trying to avoid compliance.
They are more likely to be the ones relying on outdated systems in a rapidly changing digital environment.