The matching principle requires that expenses are recognised in the same accounting period as the revenue they help to generate. This ensures that the income statement reflects the true cost of earning revenue in any given period, rather than simply recording expenses when cash is paid out.
Section 1: The Core Concept
The matching principle answers a fundamental question: when should an expense be recorded? The answer is not “when it is paid” but “when the related revenue is recognised.”
1.1 A Simple Example
A UK retailer buys £10,000 of stock in January. Half of it is sold in February for £8,000, and the remaining half is sold in March for £9,000. Under the matching principle:
| Month | Revenue | Cost of goods sold | Gross profit |
|---|---|---|---|
| January | £0 | £0 | £0 |
| February | £8,000 | £5,000 | £3,000 |
| March | £9,000 | £5,000 | £4,000 |
The £10,000 stock purchase is not recorded as an expense in January when paid. Instead, each half is matched to the month in which it generates revenue. This gives a far more accurate picture of profitability in each period.
1.2 Connection to Accrual Accounting
The matching principle is a key component of accrual accounting. While the accrual concept determines that transactions are recorded when they occur (not when cash moves), the matching principle specifically addresses the timing of expense recognition relative to revenue.
Under cash basis accounting, the matching principle does not apply because expenses are simply recorded when paid.
Section 2: How Matching Works in Practice
2.1 Direct Matching
Some expenses can be directly matched to specific revenue. The most common example is cost of goods sold: the cost of producing or purchasing an item is recognised as an expense in the same period as the sale.
Other directly matched expenses include:
- Sales commissions paid on specific contracts
- Shipping costs for delivered goods
- Subcontractor costs for specific projects
- Royalties payable on sales
2.2 Systematic Allocation
Where a direct match is not possible, expenses are allocated to periods on a systematic and rational basis. This includes:
- Depreciation: The cost of a fixed asset is spread over its useful life, matching the cost to the periods in which the asset generates revenue
- Amortisation: The same principle applied to intangible assets such as patents and software
- Prepayments: Insurance paid annually is spread over 12 months, matching the cost to each month of cover
2.3 Immediate Recognition
Some expenses cannot be reasonably matched to any specific revenue and are recognised immediately as period costs:
- Administrative salaries
- Rent and rates
- General utilities
- Audit fees
These costs support the business generally and are expensed in the period in which they are incurred, regardless of revenue timing.
Section 3: The Matching Principle Under UK Standards
3.1 FRS 102
FRS 102 does not use the term “matching principle” explicitly in its conceptual framework but achieves the same outcome through its requirements for:
- Expense recognition: Section 2.42 states that expenses are recognised when a decrease in future economic benefits related to a decrease in an asset or an increase in a liability can be measured reliably
- Revenue recognition: Section 23 provides detailed guidance on when revenue should be recognised
- Inventory: Section 13 requires inventory to be measured at the lower of cost and estimated selling price less costs to complete and sell, ensuring unsold stock is carried as an asset until matched to revenue
3.2 IFRS
Under IFRS, the Conceptual Framework similarly requires expenses to be recognised on the basis of a direct association between costs incurred and specific items of income. IFRS 15 (Revenue from Contracts with Customers) and IAS 2 (Inventories) provide detailed rules that achieve matching.
3.3 Companies Act 2006
The Companies Act 2006 Schedule 1 paragraph 13 states that the amount of any item shall be determined on a prudent basis and that all income and charges relating to the financial year shall be included, regardless of when received or paid. This statutory requirement reinforces matching.
Section 4: Practical Examples in UK Businesses
4.1 Construction Company
A building contractor signs a £500,000 contract that spans three accounting periods. Under the matching principle, the revenue and costs are recognised progressively:
| Period | Revenue recognised | Costs matched | Profit |
|---|---|---|---|
| Year 1 | £150,000 | £120,000 | £30,000 |
| Year 2 | £200,000 | £170,000 | £30,000 |
| Year 3 | £150,000 | £110,000 | £40,000 |
This approach, known as the percentage of completion method under FRS 102 Section 23, ensures each period reflects the economic activity that actually took place. For more on how revenue is recognised in such scenarios, see our article on revenue recognition.
4.2 Software Subscription Business
A SaaS company receives £24,000 upfront for a 12-month software licence starting in October. Under matching:
- Revenue: £2,000 per month is recognised from October to September (not the full £24,000 in October)
- Costs: Server hosting, support staff and development costs incurred each month are matched to that month’s revenue
- Balance sheet: The unearned portion is shown as deferred income (a liability) on the balance sheet
4.3 Manufacturing Company
A manufacturer buys raw materials, pays factory workers and incurs overhead costs to produce finished goods. None of these costs are expensed until the goods are sold:
- Raw materials purchased are recorded as inventory (an asset)
- Labour and overhead costs are added to the inventory value (absorbed costs)
- When goods are sold, the full production cost is transferred from inventory to cost of goods sold on the income statement
- Revenue from the sale is recognised in the same period
Section 5: The Matching Principle and Tax
5.1 Corporation Tax
For corporation tax purposes, HMRC generally follows accounting profit as the starting point, which means the matching principle applies. However, there are important exceptions:
- Capital allowances replace accounting depreciation for tax purposes, creating timing differences
- Provisions may not be deductible until the expense is actually incurred
- Entertaining expenses are never deductible, regardless of when they are matched to revenue
5.2 Deferred Tax
When accounting matching and tax rules produce different timing of expense recognition, deferred tax arises. For example, if a company depreciates an asset over five years but receives full capital allowances in year one, the matching principle creates a timing difference that must be tracked through the deferred tax calculation.
Section 6: Challenges and Judgements
6.1 Estimation
Matching often requires estimates. How long will a machine last? What percentage of a contract is complete? Will a customer pay their invoice? These judgements introduce subjectivity and are areas that auditors scrutinise closely.
6.2 Complexity
For businesses with long-term contracts, complex inventory systems or multiple revenue streams, applying the matching principle correctly requires significant accounting expertise and robust systems.
6.3 Potential for Manipulation
Because matching involves judgement, it can be misused. Deferring expenses to a later period or accelerating revenue recognition can artificially inflate current-period profits. This is why materiality thresholds and audit procedures exist as safeguards.
Section 7: Matching and Other Accounting Principles
The matching principle works alongside several other fundamental concepts:
- Accrual accounting provides the framework within which matching operates
- Going concern assumes the business will continue, making it meaningful to spread costs over future periods
- Materiality determines the threshold below which strict matching may be relaxed for practical purposes
- Prudence ensures that expenses are not deferred inappropriately and revenue is not recognised prematurely
Understanding how the matching principle operates is essential for interpreting UK financial statements accurately and for preparing accounts that comply with UK accounting standards.