Corporation tax is one of the most important obligations for UK limited companies, yet it is also one of the most commonly mismanaged. Many businesses focus on filing their returns on time but overlook the separate corporation tax deadline, which can create unexpected cash flow pressure.
An HMRC corporation tax payment plan can offer a structured way to handle unpaid taxes when money is tight without having to deal with legal action right away. This arrangement allows eligible businesses to spread payments over time while staying compliant with HMRC requirements.
In 2026/27, more businesses are finding themselves in need of short-term assistance rather than long-term solutions due to growing operating costs and tighter margins in many UK sectors. Understanding how HMRC approaches payment plans, what they expect from businesses, and how to apply correctly can make a significant difference in avoiding penalties and protecting cash flow.
What Is an HMRC Corporation Tax Payment Plan?
An HMRC corporation tax payment plan is usually known as a Time to Pay (TTP) arrangement. Businesses going through short-term financial difficulties can pay their corporation tax liability in instalments instead of all at once with a Time to Pay arrangement.
According to HMRC’s debt management guidance, Time to Pay arrangements are designed for viable businesses that cannot meet tax liabilities on the due date but can repay the debt over an agreed period. HMRC assesses each case individually and tailors repayment plans to affordability.
The arrangement does not eliminate the tax liability. Your company must still pay the full amount owed, along with any applicable interest.
When Is Corporation Tax Due?
Understanding your corporation tax payment deadline is essential for avoiding interest charges and unnecessary pressure on cash flow. The timing depends mainly on your company’s size and its accounting period.
Understanding Your Payment Deadline
Small and medium companies (profits up to £1.5 million)
Most UK limited companies fall into this category.
• Payment due: 9 months and 1 day after the accounting period ends
• This applies to contractors, small businesses, landlords with limited companies, and startups
Example:
Year-end: 31 March
Payment due: 1 January
Large companies (profits above £1.5 million)
Larger companies follow a different system.
• Corporation Tax is paid in quarterly instalments
• Payments start 6 months and 13 days after the accounting period begins
This system spreads the liability across the year instead of a single lump sum.
(Source: Pay Corporation Tax if you’re a large company)
The Critical Timing Issue That Catches Directors Out
This is where many businesses run into problems. Your corporation tax payment deadline comes before your CT600 filing deadline.
• Payment deadline: 9 months and 1 day after year-end
• CT600 filing deadline: 12 months after year-end
That gap often creates confusion in real business situations.
Before calculating taxes, many directors wait for their accountant to complete their accounts. In practice, accounts are often completed in month 10 or 11. By that point, the payment deadline has already passed.
Once the deadline has passed, HMRC can start charging interest immediately. This is one of the most common avoidable costs for UK companies.
How to avoid this problem
The best approach is to stay ahead of it rather than react to it later. A simple habit is to estimate your Corporation Tax early in the year with your accountant and start setting money aside each month. Even a rough figure gives you a much clearer picture than waiting until the final accounts are done.
You can then:
• Make an estimated payment before the deadline
• Adjust once final figures are confirmed
• Avoid HMRC interest charges entirely
This approach keeps cash flow predictable and removes last-minute pressure around the corporation tax deadline.
For many businesses, especially growing companies, this level of planning is what separates smooth compliance from avoidable tax stress.
Who Can Apply?
HMRC generally considers a Time to Pay (TTP) arrangement when a business can demonstrate that it is experiencing genuine but temporary financial difficulty.
Applications are usually assessed on the following basis:
• Unable to pay in full immediately
The company must show that it cannot settle the corporation tax liability by the corporation tax deadline but still intends to remain operational.
• Temporary cash flow pressure
HMRC is more likely to agree where the issue is short-term, such as delayed customer payments or seasonal fluctuations, rather than long-term insolvency concerns.
• Realistic repayment plan
The business must propose instalments that are affordable and supported by actual cash flow, not estimates that are too optimistic.
• Reasonable compliance history
Companies with a history of filing and paying on time are generally viewed more favourably. Repeated late filings or unpaid taxes can reduce approval chances.
• Ability to repay in future
HMRC will expect evidence that the business can continue trading and meet future obligations while repaying the debt.
Confused About Funding Options?
Choose the right path for your business.
Call us: +44 (0) 207 183 6286
How to Apply for an HMRC Corporation Tax Payment Plan
Applying for an HMRC corporation tax payment plan is usually straightforward, but it requires preparation. HMRC expects clear figures, realistic repayment terms, and evidence that your business can meet future obligations.
Below is a structured step-by-step process to follow.
Step 1: Calculate the Tax Owed
Before contacting HMRC, you need an accurate figure for your corporation tax liability. This should ideally be based on draft accounts or management accounts prepared by your accountant before the CT600 is submitted.
Avoid loosely estimating. HMRC relies on accurate figures when assessing affordability. Incorrect or incomplete figures can slow down approval or lead to rejection.
A professional review of your accounts at this stage can also help ensure you are not overpaying or underestimating your liability.
Step 2: Review Your Cash Flow
HMRC will assess whether your business can realistically repay the debt.
You should prepare a clear breakdown of:
• Available cash in the business
• Monthly operating costs
• Expected incoming payments
• Any upcoming liabilities
This step is important because HMRC bases approval on affordability rather than goodwill.
If your repayment proposal is too optimistic, it may result in missed payments later, which can cancel the arrangement.
Step 3: Contact HMRC Early
Timing is critical. You should contact HMRC as soon as you know you may struggle to meet the corporation tax deadline.
Early contact increases the chance of approval and shows willingness to comply. Waiting until enforcement action begins can reduce flexibility and may result in stricter terms.
HMRC is generally more cooperative when businesses act before reminders or debt collection letters are issued.
Step 4: Present a Repayment Proposal
When you speak to HMRC, you will need to explain your situation clearly.
This usually includes:
• Why you cannot pay in full immediately
• The reason for your current cash flow issue
• The monthly amount you can realistically afford
• When you expect your financial position to improve
Keep the explanation factual and supported by numbers.
HMRC is less concerned with narrative and more focused on financial evidence and repayment ability. A well-prepared proposal often leads to quicker approval.
Step 5: Agree the Terms
If HMRC accepts your application, they will set out formal terms for the arrangement.
This typically includes:
• Monthly instalment amount
• Payment schedule and due dates
• Length of the repayment plan
• Interest charges that will continue to apply
Most arrangements run over several months, depending on the size of the debt and the affordability assessment.
In some cases, longer repayment periods may be agreed if the business can clearly demonstrate sustained financial pressure but ongoing viability.
Once agreed, it is essential to stick to the schedule. Missing payments can lead to the arrangement being cancelled and enforcement restarting.
What Information Should You Prepare?
A successful HMRC corporation tax payment plan application depends heavily on how well you present your financial position. HMRC is far more likely to agree an arrangement when the information is complete, consistent, and easy to verify.
Before contacting HMRC, it helps to prepare a clear set of documents across three key areas.
• Financial records
HMRC needs to understand your current trading position and short-term cash flow.
You should gather:
• Latest statutory accounts or draft accounts
• Up-to-date management accounts
• Recent business bank statements
• Cash flow forecasts covering upcoming months
These documents help HMRC assess whether your business can realistically meet an instalment plan alongside ongoing expenses.
• Tax information
HMRC will also review your corporation tax position in detail.
Prepare:
• Corporation Tax computation
• CT600 Company Tax Return details
• Record of previous Corporation Tax liabilities
• Any outstanding tax balances or payment history
Clear and accurate tax figures reduce delays and improve trust during the assessment process.
• Business information
Basic company details are also required to set up and confirm the arrangement.
Include:
• Company registration number and details
• Accounting period dates
• Director contact information
• Business trading status and structure
Having this ready speeds up the process and avoids back-and-forth communication with HMRC.
Understanding the Costs and Obligations
A HMRC corporation tax payment plan can provide valuable breathing space, but it does not remove or reduce the underlying tax responsibility. It simply restructures how the debt is repaid. Because of this, businesses need to be clear on the ongoing costs and conditions before agreeing to a Time to Pay arrangement with HMRC.
• Interest still applies throughout the plan
One of the most important points to understand is that interest continues to accrue even after a payment plan is approved. As of the 2026/27 tax year, HMRC late payment interest is 7.75%, and it is charged on the outstanding balance until it is fully cleared.
This interest is calculated on a reducing balance, which means the charge decreases as repayments are made. However, the overall cost still increases the longer the repayment period runs.
For example, a Corporation Tax liability of £60,000 spread over 12 months can generate around £3,900 in interest. While this adds to the total repayment, it is still typically more cost-effective than enforcement action, which can include additional penalties and recovery costs.
• Ongoing tax obligations must be maintained
A common misunderstanding is that a payment plan covers all tax responsibilities. In reality, it only applies to the specific debt included in the arrangement.
During the repayment period, businesses must continue to meet all other obligations on time, including:
• Current year Corporation Tax
• VAT returns and payments
• PAYE and National Insurance contribution
HMRC expects full compliance going forward. If a business falls behind on new liabilities or misses instalments under the arrangement, the agreement may be cancelled. Once cancelled, HMRC can resume enforcement action immediately.
• Penalties may be reduced in some cases
While interest is unavoidable, penalties can sometimes be reduced or removed depending on how the business behaves. Companies that contact HMRC early, provide accurate information, and show genuine intent to comply are more likely to receive favourable treatment.
This is why acting before or around the corporation tax deadline is often beneficial. Early communication demonstrates cooperation and can reduce the risk of additional penalty charges being added on top of the tax debt.
Key deadlines for 2026/27
For the 2026/27 tax year, the standard corporation tax payment rules remain unchanged. Most companies must pay corporation tax nine months and one day after the end of their accounting period.
To put this into context:
• 31 March year-end: payment due 1 January
• 30 June year-end: payment due 1 April
• 31 December year-end: payment due 1 October (following year)
The filing deadline for the CT600 remains 12 months after year-end, so payment is always due earlier than submission of the tax return. This gap is one of the main reasons businesses experience unexpected cash flow pressure.
What happens if a payment plan fails
A Time to Pay arrangement only works if repayments are maintained consistently. If payments are missed, HMRC may take action depending on the circumstances.
If a business misses an instalment, HMRC may:
• Cancel the arrangement
• Request immediate repayment of the full remaining balance
• Restart debt recovery procedures
In more serious cases, this can escalate to formal enforcement such as county court judgements or winding-up proceedings for limited companies.
That said, HMRC does not usually act instantly for a single missed payment. If the business contacts them quickly and resolves the issue, they may allow the arrangement to continue.
The key distinction is between temporary disruption and ongoing non-compliance. One missed payment with communication is manageable. Repeated missed payments suggest the arrangement is no longer affordable, and HMRC typically responds more firmly in those cases.
Conclusion
An HMRC corporation tax payment plan provides genuine relief when cash flow temporarily prevents you from meeting your full tax bill. The process is straightforward. Contact HMRC early, present a realistic proposal, and back it up with financial evidence. Set up Direct Debit for your agreed instalments.
The key to success is early action. Businesses that engage HMRC before deadlines are missed secure arrangements far more easily. Those waiting until enforcement begins face much harder negotiation. Interest continues to accrue throughout any plan. This makes it essential to clear the debt as quickly as your business can realistically afford.
For limited companies struggling with corporation tax payments, a Time to Pay arrangement beats the alternative. The alternative is penalties, enforcement action, and the risk of a winding-up petition. Without an arrangement, such escalation could force your business into insolvency. Understanding how payment plans work and applying properly puts you firmly in control.
