Making a loss does not always mean the money is gone forever. For many UK limited companies, Corporation Tax Loss Relief can help reduce future tax bills or recover tax already paid.
The available option depends on the type of loss, the company’s circumstances, and whether the business expects future profits. The rules depend on the type of loss, the company’s circumstances, and the accounting period involved.
Understanding these rules can help directors make better decisions about cash flow, tax planning, and financial reporting. Many businesses miss valuable relief because losses are not reviewed properly during year-end accounts preparation.
Key Takeaways
- Company losses may reduce Corporation Tax by being used against earlier or future profits.
- Trading losses can often be carried forward or carried back, subject to HMRC rules.
- Different losses have different treatments, including property, capital, and trading losses.
- Loss relief should be reviewed before filing the Corporation Tax return.
What Is Corporation Tax Loss Relief?
Corporation Tax Loss Relief allows companies to use certain losses to reduce their Corporation Tax liability. Instead of losing the benefit of a difficult trading year, a company may use those losses when profits return.
The loss shown in company accounts is not always the same as the tax loss used by HMRC. Accountants must make tax adjustments before calculating the final Corporation Tax position.
HMRC confirms that companies may claim Corporation Tax relief where losses arise from trading activities, capital disposals, or property income. The available relief depends on the type of loss and the company’s circumstances. HMRC guidance explains that trading losses may be carried forward, carried back, or used through group relief where the conditions are met.
(Source: HMRC, Work out and claim relief from Corporation Tax trading losses)
How Can a Company Use Losses?
A company may have several options when it makes a loss. The correct choice depends on the company’s current position and future plans.
Carrying Losses Forward
The most common option is carrying losses forward. This means the company keeps the unused loss and uses it against future profits. This can reduce future Corporation Tax bills when the business becomes profitable again.
For example, a limited company makes a trading loss of £40,000 in the year ended 31 March 2026. The company returns to profit and makes £70,000 taxable profit in the following year. The company may be able to use the £40,000 loss against future profits. This reduces the taxable profit and lowers the Corporation Tax payable.
From 1 April 2017, many carried-forward losses can be used more flexibly against total profits. However, restrictions can apply where profits exceed certain levels.
Carrying Losses Back
Some companies may benefit from carrying losses back. This allows a company to use a loss against earlier profits and potentially recover Corporation Tax already paid.
For example, a company paid Corporation Tax on profits during 2025. It then makes a trading loss during 2026. If eligible, the company may claim relief against previous profits and receive a repayment or reduction of Corporation Tax.
HMRC generally requires claims to be made within two years from the end of the accounting period in which the loss arose.
Group Relief
Companies within a qualifying group may sometimes use losses more efficiently. A loss-making company may surrender eligible losses to another group company with taxable profits. This can reduce the overall Corporation Tax burden across the group.
Group relief has specific conditions. Companies must review ownership structures, accounting periods, and eligibility before making claims.
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Types of Losses and Their Treatment
Not all company losses work in the same way.
|
Loss type |
How it is generally used |
|
Trading losses |
May be carried forward, carried back, or used through group relief |
|
Property income losses |
Usually carried forward against future property income profits |
|
Capital losses |
Usually offset against capital gains |
|
Terminal losses |
May allow additional relief when a trade stops |
Trading losses usually provide the widest range of options. Property and capital losses follow different rules, so companies should avoid assuming every loss can be used in the same way.
(Source: Carry forward Corporation Tax losses)
Corporation Tax Loss Relief and Cash Flow Planning
Losses are not only a tax issue. They also affect business decisions. A loss-making year can create pressure on cash flow, especially where directors have invested personal funds or taken reduced drawings.
Regular management accounts help directors understand profitability, cash flow requirements, and future tax obligations before making decisions.
This is why regular management accounts are valuable. They provide a clearer picture than waiting until year-end accounts are completed.
What Records Does HMRC Expect?
HMRC expects companies to keep sufficient records to support their Corporation Tax position.
Businesses should maintain:
• Sales records and invoices.
• Purchase invoices and expense evidence.
• Bank statements.
• Payroll records.
• VAT records.
Accurate bookkeeping helps prevent incorrect loss calculations. Missing records can delay accounts preparation and create problems if HMRC reviews the tax return.
Businesses should also keep evidence explaining unusual transactions. This is especially important for large expenses, director transactions, and one-off costs.
Common Mistakes Companies Make
Many companies lose the benefit of proper tax planning because losses are not reviewed carefully.
Assuming Every Loss Can Be Used Immediately
Different losses have different rules. A property loss cannot always be used in the same way as a trading loss.
Ignoring Losses During Year-End Accounts
Some businesses focus only on the Corporation Tax amount payable. They overlook the value of losses that may help in future years.
Poor Bookkeeping Records
Incorrect bookkeeping can create incorrect profit or loss figures. This may affect Corporation Tax calculations.
Forgetting Previous Profits
A company that paid Corporation Tax before making a loss may have an opportunity to recover some tax through loss relief.
Closing a Company Without Reviewing Losses
Companies planning to cease trading should review terminal loss relief opportunities before closure.
HMRC allows certain terminal loss claims when a trade stops. These claims have specific conditions and deadlines.
Turning Business Losses Into Future Opportunities
Corporation Tax Loss Relief can turn a difficult trading year into a future tax planning opportunity. The key is understanding what type of loss your company has and how HMRC allows it to be used.
Keeping accurate records, preparing reliable accounts, and reviewing available reliefs before filing can help protect your company’s position.
If your limited company has made a loss, we can help review your accounts, Corporation Tax position, and available relief options. Contact our team for professional advice tailored to your business.
