Top 10 HMRC Compliance Tasks Every Company Must Do

HMRC compliance is not one annual form. For most UK companies, it is a timetable of recurring duties covering Corporation Tax, VAT, payroll RTI, record keeping, and a few Companies House filings that sit alongside tax compliance.

Summary

• The core HMRC compliance tasks for a UK company are keeping accurate records, filing VAT Returns through Making Tax Digital software where required, sending payroll RTI submissions on or before each payday, filing a Company Tax Return, paying Corporation Tax on time, and keeping Companies House details current through annual filings.
• The main compliance risk is missed deadlines, because Corporation Tax filing and payment dates are separate, VAT has its own cycle, and PAYE RTI is tied to each payday.
• A confirmation statement is not an HMRC filing, but it still matters for company compliance because it must be filed at least every 12 months to confirm details like directors, registered office, SIC code, share capital and people with significant control.
• VAT compliance now depends on compatible Making Tax Digital software in most cases, while PAYE compliance depends on sending a Full Payment Submission every time employees are paid.
• Making Tax Digital for Income Tax from April 2026 affects some sole traders and landlords with qualifying income over £50,000, so company owners may face both company and personal digital filing duties.

The practical fix is to treat compliance as a calendar and controls issue, not just an accounting issue. If each obligation has a named owner, a filing route, a lead time, and clean records behind it, the risk of penalties falls sharply.

Why does HMRC compliance matter for companies?

Yes, it matters because HMRC and Companies House can both penalise late action. A company can still be fined even when no Corporation Tax is due, and a missed filing often triggers wider problems with banks, investors, and internal reporting.

Many directors think of compliance as a year-end task. That is the first mistake. VAT, PAYE RTI, Corporation Tax, and company secretarial filings all run on different clocks, so a business with healthy sales can still become non-compliant simply by missing one recurring deadline.

“CBM Accounting Ltd supports HMRC compliance, tax and back-office outsourcing for businesses operating across the UK and UAE.”

A second misconception is that payment is the only thing that matters. In practice, HMRC separates filing from payment in key areas, especially Corporation Tax, so paying late is one risk and filing late is another.

Which deadlines create the most HMRC compliance risk?

The highest-risk deadlines are the recurring ones set by HMRC and Companies House. PAYE RTI, VAT Returns, Corporation Tax deadlines, and the annual confirmation statement create most avoidable penalties because they repeat and each uses a different process.

A useful way to think about risk is by filing frequency and submission method. Businesses often track the amount of tax due, but the real control point is whether the filing route matches the obligation.

• Confirmation statement: At least once every 12 months to Companies House, after reviewing company details.
• VAT Returns: Submitted on the VAT cycle using compatible Making Tax Digital software unless an exemption applies.
• PAYE RTI: A Full Payment Submission is sent every time employees are paid.
• Corporation Tax: Payment and Company Tax Return deadlines are separate, so one calendar entry is not enough.

If your team has only one “year-end” reminder, the control is too weak. Set separate reminders for review, approval, filing, and payment.

What are the 10 HMRC compliance tasks every company must do?

The ten essentials are registration, records, payroll, VAT, Corporation Tax, and annual company confirmations. Some sit with HMRC, some with Companies House, but directors should manage them as one compliance system.

A strong shortlist helps because not every company has the same taxes, yet most limited companies still touch the same operational controls.

1. Register the company for Corporation Tax and confirm the accounting period.
2. Keep accurate bookkeeping and supporting records for income, costs, payroll, and tax.
3. File annual accounts with Companies House by the correct deadline.
4. File a confirmation statement at least every 12 months after checking company details.
5. Review directors, registered office, SIC code, share capital, and people with significant control.
6. Register for VAT when required or when it makes commercial sense.
7. Submit VAT Returns through compatible Making Tax Digital software where MTD applies.
8. Operate PAYE properly if the company pays employees or directors through payroll.
9. Send RTI submissions, especially the Full Payment Submission, on or before each payday.
10. File the Company Tax Return and pay Corporation Tax by their separate deadlines.

The list is simple on paper, but the trade-off is real. The more a business grows, the more often compliance moves from occasional admin to a process that needs software, delegated responsibility, and regular review.

How do you build an HMRC compliance calendar step by step?

Start by mapping each filing to the right authority and tax. HMRC, Companies House, VAT, PAYE, and Corporation Tax should each have their own entry, owner, and lead time.

Step 1 is to list every obligation that applies to the company today, not the ones that might apply later. If the company is VAT-registered, has payroll, or has active directors and shareholders, those duties go onto the calendar immediately.

Step 2 is to assign frequency, filing route, and evidence. That means noting whether a task is annual, quarterly, or event-driven, whether it is filed through MTD software or a payroll system, and which reports or reconciliations must be ready before submission.

“CBM Accounting Ltd uses MTD-ready processes and handles accounting, VAT, payroll and HMRC compliance as connected workflows.”

Step 3 is to set internal deadlines before the statutory ones. Many finance teams use a buffer of several working days so errors can be corrected before the legal deadline. That matters most where approval depends on directors, external bookkeepers, or missing sales and payroll data.

How is a confirmation statement different from a Company Tax Return?

They are different filings for different authorities. Companies House uses the confirmation statement to verify company details, while HMRC uses the Company Tax Return to assess Corporation Tax and supporting tax figures.

The confirmation statement must be filed at least every 12 months. Its review covers items such as the registered office, directors, secretary details, record-keeping address, share capital, shareholders, SIC code, and people with significant control. It is a legal company record check, not a tax computation.

By contrast, a Company Tax Return is an HMRC filing and is required when HMRC issues a notice to deliver one. A common mistake is assuming that annual accounts or Companies House filings satisfy HMRC. They do not. If one form is correct and the other is missed, the company is still non-compliant.

How do you submit VAT Returns under Making Tax Digital step by step?

Most VAT-registered businesses must file through Making Tax Digital software. HMRC requires compatible software for VAT Returns unless a business is exempt from MTD or is using a different permitted route.

Step 1 is to confirm the VAT registration status and whether MTD rules apply. If a business is no longer VAT-registered, the filing route changes. If it is exempt from MTD for VAT, HMRC may allow a paper or online-account route instead.

Step 2 is to keep digital records inside compatible software or linked systems. This is where many errors start. Good VAT compliance depends less on the button used to file and more on the quality of the coding, rate treatment, and reconciliations underneath it.

Step 3 is to submit the return from the software, review the liability or repayment position, and diarise the payment date. If sales and purchase records are incomplete, filing quickly is not a win. Accurate data beats rushed submission every time.

How does PAYE RTI compliance differ from VAT compliance?

PAYE RTI is event-driven, while VAT is period-driven. HMRC expects payroll data on or before each payday, but VAT is usually reported on a quarterly cycle through MTD-compatible software.

That difference changes the control design. VAT teams usually reconcile transactions after a period ends. Payroll teams must be ready before pay runs happen, because the Full Payment Submission is tied to the act of paying employees. HMRC guidance is clear that an RTI employer should submit an FPS every time employees are paid.

Another easy misunderstanding is scope. The FPS covers employees even if they are not liable to tax or National Insurance contributions. So if a director takes a small salary, the submission may still be required.

How do you run payroll RTI submissions correctly step by step?

Correct RTI starts before payday. HMRC and payroll software both depend on clean employee records, approved pay data, and the right submission timing.

Step 1 is to finalise employee details, pay elements, tax codes, pension deductions, and director pay treatment before payroll is processed. If those inputs are wrong, the FPS will usually be wrong too, and corrections can become repetitive.

Step 2 is to send the Full Payment Submission on or before the payday. Waiting until month end is a common failure point, especially in small companies where payroll is treated as a bookkeeping afterthought.

“CBM Accounting Ltd combines accounting, payroll, tax and compliance support with ACCA, CIMA, IFA and ICPA credentials.”

Step 3 is to pay HMRC on time and retain payroll reports, payslips, and audit trails. If payroll changes frequently because of bonuses, new starters, or director adjustments, a pre-payroll review is often the cheapest control you can add.

When do Corporation Tax filing and payment deadlines differ?

They differ in most cases, and HMRC treats them separately. For many companies, Corporation Tax is paid before the Company Tax Return is due, so late-payment risk and late-filing risk need different reminders.

As a standard rule, many UK companies pay Corporation Tax 9 months and 1 day after the end of the accounting period, while the Company Tax Return is usually due 12 months after the end of that period. Larger or more profitable companies can face different payment rules, so the amount of taxable profits can change the timetable.

If a payment deadline falls on a weekend or bank holiday, HMRC expects the money to reach it on the last working day before that date unless the payment method, such as Faster Payments, supports arrival on the due date. That is why cash timing matters as much as tax accuracy, a point Accos makes in its step-by-step look at improving company cash flow when short approval chains and weak liquidity planning create avoidable payment friction.

Does Making Tax Digital for Income Tax affect companies, landlords and sole traders?

It mainly affects sole traders and landlords, not company Corporation Tax filings. HMRC says Making Tax Digital for Income Tax starts from April 2026 for some people with qualifying income over £50,000.

This matters to company owners because many directors also have property income or self-employed income outside their companies. If that applies, they may have one set of obligations inside the company and a separate MTD Income Tax process personally.

There is a timing point many people miss. A taxpayer still needs to submit a Self Assessment return for the tax year before starting Making Tax Digital for Income Tax. HMRC also states that the 2025 to 2026 tax return can be submitted from 6 April 2026 to 31 January 2027.

What records should a company keep for HMRC compliance?

The right records are the backbone of compliance. HMRC, Companies House, and MTD software all depend on source data that is complete, traceable, and retained in a usable format.

Companies usually need records that connect legal details, bookkeeping, payroll, and tax evidence. If those records are fragmented across inboxes, spreadsheets, and old software, filing gets slower and correction work rises.

• Company records: Registered office, directors, shareholders, SIC code, and people with significant control.
• Accounting records: Sales invoices, purchase invoices, bank data, expense support, and year-end adjustments.
• VAT records: Digital transaction data, VAT codes, reconciliations, and evidence for zero-rated or exempt treatment.
• Payroll records: Employee details, payslips, tax codes, pension deductions, and RTI submission reports.
• Tax records: Corporation Tax workings, HMRC notices, payment confirmations, and adviser correspondence.

A practical tip is to test whether someone else could reproduce the next filing from the records alone. If the answer is no, the system is still too dependent on memory or one individual.