Financial Accounting · Chapter 2
Accounting Concepts, Principles, Conventions, and Policies
A repair shop finishes a job in December, sends an invoice the same day, and collects the cash in January. Which month earned the revenue? The answer depends on when the shop delivered the service and on the accounting basis it uses. This chapter shows how accounting concepts, reporting requirements, and the shop’s own policies work together to answer questions like this.
By the end, you should be able to explain why cash and profit can differ, distinguish cost from carrying amount, and classify a change as a policy change, an estimate change, or the correction of an error. The figures are in currency units (CU). Examples use an IFRS teaching context unless stated otherwise.
How the four terms fit together
Accounting concepts are the ideas that explain how financial reporting works. A principle guides treatment, a convention describes a familiar way of applying judgment, and a policy specifies the basis or method an entity applies in its financial statements. Textbooks often use these labels differently. In practice, start by asking which reporting requirement applies and which decisions it leaves to the entity.
| Term | Question it answers | Repair shop example |
|---|---|---|
| Concept | What idea explains the treatment? | Separate the shop’s transactions from the owner’s personal spending. |
| Principle | What rule guides recognition or measurement? | Recognize qualifying service revenue as the performance obligation is satisfied. |
| Convention | What familiar approach guides judgment? | Apply prudence when assessing an uncertain receivable. |
| Policy | What permitted basis or method does this entity use? | Apply the cost model to a class of equipment when the relevant standard permits it. |
Memory aid. Ask for the idea, the rule, the judgment, and the entity’s chosen treatment.
Brain Test · Is using the cost model a policy or an estimate?
It is an accounting policy. The useful life used to calculate depreciation is an estimate.
1. Fundamental accounting concepts
Business entity, going concern, periodicity, and money measurement
Separate the business from the owner
If the owner contributes CU 5,000 in cash, the shop’s cash and owner’s equity both increase by CU 5,000. If the sole proprietor later uses CU 200 of shop cash for a personal grocery bill, cash and owner’s equity decrease. Record the CU 200 as drawings. A business repair expense would reduce profit, so misclassifying the withdrawal would make the shop appear less profitable than it was.
Prepare accounts on an appropriate basis
Going concern assumes the entity will continue operating for the foreseeable future. If management intends to liquidate or cease trading, or has no realistic alternative, the going-concern basis is inappropriate. Significant doubts can require disclosure even when the basis remains appropriate.
Draw the reporting boundary in time and money
Periodicity divides the life of an entity into reporting periods. A bill paid in January can still relate to December if the service was received then. Monetary measurement gives unlike items a common reporting unit. A trained workforce can be important to operations even when the shop cannot recognize it as an asset. Financial reports and accompanying disclosures can also contain relevant nonmonetary information.
Brain Test · The owner pays a personal bill from shop cash. What changes?
Cash and owner’s equity decrease. Because the payment is a drawing, the shop’s profit stays the same.
Accrual, matching, and realisation
Realisation is a traditional textbook term used when discussing when revenue is recognized. Under IFRS 15, use the transfer of control of the promised goods or services to determine when or as the performance obligation is satisfied.
Under accrual accounting, events are reported in the periods to which they relate. For revenue from customer contracts under IFRS 15, the timing depends on when the entity satisfies the performance obligation by transferring control of the promised good or service. A service can qualify for recognition over time. For this example, assume the shop satisfies its obligation at a point in time when the completed repair is handed back on 28 December, and that CU 1,200 is then unconditionally due.
- 28 December
The shop hands back the repaired item. Record revenue of CU 1,200 and a receivable of CU 1,200. - 31 December
The invoice is unpaid. The December reports include the revenue and the outstanding receivable. - 10 January
The customer pays. Increase cash and reduce the receivable by CU 1,200.
Assume the shop used parts costing CU 450 on that job. Recognize the related parts expense in December when the repair is delivered. Revenue less the parts cost is CU 750 before any other expenses. The CU 750 is an amount earned after one identified cost. It does not show the cash in the bank or the shop’s total profit.
Important note. The matching idea helps explain why the parts cost appears with the related revenue. It does not justify carrying a cost forward as an asset when the relevant recognition requirements are unmet.
Brain Test · A customer pays CU 300 before work begins. Has the shop earned it?
Assume the shop still owes the repair under the contract. The receipt increases cash and a contract liability. The shop recognizes revenue when or as it satisfies the performance obligation.
Historical cost and other measurement bases
Measurement is how an entity assigns an amount to a recognized item. Historical cost begins with the transaction. A later carrying amount under a cost model can reflect depreciation and impairment. Other measurement bases capture different information, and the applicable reporting standard determines which bases are required or permitted.
Suppose the shop pays CU 2,400 for qualifying equipment with a four-year useful life, zero residual value, and straight-line depreciation. After one full year, depreciation is CU 600 and the carrying amount is CU 1,800, assuming no impairment. If someone later offers CU 1,500 for the equipment, that offer is a separate piece of information. On its own, it does not establish fair value or require a change to the book amount.
Brain Test · What is the carrying amount after two full years?
CU 1,200 under the same assumptions. Deduct CU 600 of depreciation for each year from the CU 2,400 acquisition cost.
Dual aspect and the accounting equation
Every transaction has at least two effects on the accounts. Use the accounting equation to check how those effects fit together. Assets = Liabilities + Equity. Suppose the repair shop buys CU 2,400 of equipment and pays CU 900 immediately, leaving CU 1,500 owed to the supplier. Equipment increases by CU 2,400, cash decreases by CU 900, and payables increase by CU 1,500. Total assets and liabilities each increase by CU 1,500. Equity stays the same.
Brain Test · What changes when the shop pays the supplier?
Cash and payables each decrease by CU 1,500. Equipment and equity stay the same.
Consistency, prudence (conservatism), and materiality
Consistency means applying the same methods to similar transactions so readers can compare results. Prudence, often discussed under conservatism in textbooks, means using caution under uncertainty while keeping estimates neutral. Materiality asks whether information could reasonably influence the decisions of primary users. The amount and the nature of the item both matter. Lesson 2 shows how to apply these ideas together.
2. Accounting conventions and modifying principles
Textbooks sometimes group materiality, prudence, consistency, and disclosure together because they shape the practical application of accounting principles. Apply them within the relevant reporting requirements. One broad constraint is cost. Providing information uses resources, so the benefits should justify the costs. Under a reporting framework, that constraint does not give a preparer permission to disregard a specific requirement.
- Consistency. Apply the same policies to similar transactions as required. Consistency makes separate periods easier to compare. A change can be justified or required under the applicable rules.
- Prudence. Exercise caution when making judgments under uncertainty. For example, use available evidence about a doubtful customer balance and document the assumptions. Caution does not justify deliberately overstating expenses or understating assets.
- Materiality. Consider whether omitting, misstating, or obscuring information could reasonably influence primary users’ decisions. The amount, its nature, or both can matter. A comparatively small amount can attract attention if it affects a loan covenant.
- Disclosure. Include the material information users need to interpret the figures, such as relevant policy information and significant uncertainties where required. Explain the effect in plain language so readers can connect the note to the reported amount.
Memory aid. Apply consistently, estimate carefully, ask what could affect a decision, and explain it clearly.
Brain Test · Can a small amount be material?
Yes. Consider whether the amount changes the reader’s decision or understanding. An amount that changes whether a lending condition was met is a good example.
3. Accounting policies, policy changes, and estimates (IAS 8)
When an IFRS requirement specifically applies, follow it. When none specifically applies, IAS 8 directs management to consider requirements for similar and related matters first and then the relevant concepts in the Conceptual Framework. This gives the shop a way to develop a policy when it encounters an unfamiliar transaction.
Change an accounting policy if required by an IFRS Accounting Standard or if the voluntary change provides reliable and more relevant information. For example, do not switch methods simply to make this year’s results look better. For voluntary changes, apply the new policy retrospectively unless impracticable.
| What changed? | Example | Usual IFRS treatment |
|---|---|---|
| Accounting policy | The applicable framework changes the required measurement basis. | Follow the standard’s transition rules. Where retrospective application is required, apply it unless impracticable. |
| Accounting estimate | New inspection evidence changes the remaining useful life of equipment. | Recognize the effect prospectively in the current period, future periods, or both, as affected. |
| Prior-period error | The shop omitted a material December supplier invoice even though reliable information was available when those statements were authorized. | Correct the material error by retrospective restatement unless impracticable. |
For the CU 2,400 equipment after year one, suppose new evidence indicates two years of remaining use. Depreciate its CU 1,800 carrying amount over those two years. With zero residual value and straight-line depreciation, that gives CU 900 a year going forward. The previous year’s CU 600 remains based on the information available at the time.
Brain Test · New information changes the useful life. Do you rewrite last year?
Generally, no. Apply the estimate change prospectively. If the earlier calculation instead overlooked reliable information that was already available, assess whether it is a prior-period error.
4. Difference between an accounting policy and an accounting estimate
A policy tells you which reporting basis or method applies. An estimate is a monetary amount subject to measurement uncertainty. To calculate an estimate, the entity may use inputs such as useful life or residual value. Start by asking what actually changed.
- Check the basis.
A change in the measurement basis, such as moving to a different permitted basis, is a policy change. - Check the evidence.
If the basis continues and new evidence revises the inputs used for depreciation, the resulting change is generally an estimate change. - Check what was known.
If reliable information was available for the earlier statements and was overlooked or misused, consider whether there was a prior-period error.
Memory aid. Basis, new evidence, earlier mistake. If it is difficult to distinguish a policy change from an estimate change, IAS 8 treats it as a change in estimate.
Brain Test · The shop changes the equipment’s residual value after reviewing current resale data. Which kind of change is it?
It is an estimate change if current evidence supports the revision and the measurement basis stays the same. Apply it prospectively to the affected periods.
5. Qualitative characteristics of useful financial information
Relevance and faithful representation are the two fundamental characteristics. Information first needs to address a decision and depict the underlying event faithfully. Comparability, verifiability, timeliness, and understandability then make it more useful.
| Characteristic | What to look for | Example |
|---|---|---|
| Relevance | Information can make a difference to a decision through predictive value, confirmatory value, or both. | A lender uses overdue customer balances to assess expected collections. |
| Faithful representation | Depict the economic substance as completely and neutrally as possible, using a sound process and explaining uncertainty. | The shop explains how it estimated an impairment. Estimation uncertainty can remain even when the process is sound. |
| Comparability | Help readers see real similarities and differences across periods or entities. | Comparable classifications let a reader compare parts costs from year to year. |
| Verifiability | Independent, knowledgeable observers can reach reasonable agreement about how the information represents the underlying item. | A reviewer can trace the equipment cost to the invoice and recalculate depreciation using documented inputs. |
| Timeliness | Provide the information early enough to influence a decision. | Send the cash forecast before the owner commits to buying another machine. |
| Understandability | Present information clearly and concisely, with explanations where the issue is complex. | Use a labeled schedule to explain which customer balances are overdue. |
Brain Test · An incorrect cash report arrives before a loan decision. Which characteristics apply?
The early delivery supports timeliness, but the incorrect figures undermine faithful representation. Timeliness cannot make an inaccurate report dependable.
Chapter practice
- The shop completes and hands over a CU 900 repair on 30 June. The customer pays on 15 July. Identify the June and July effects.
- The sole proprietor withdraws CU 100 from the shop bank account. Explain the impact on cash, equity, and profit.
- A year after purchase, new usage data shortens the expected useful life of a tool. Classify the change and explain its timing.
Reveal worked answers
- Assuming the performance obligation is satisfied at handover and payment is unconditionally due, June includes CU 900 revenue and a CU 900 receivable. July increases cash and clears the receivable.
- Cash and equity fall by CU 100. Profit is unaffected because the withdrawal is a drawing.
- It is a change in estimate. Recalculate depreciation prospectively from the carrying amount over the revised remaining useful life.
For revision, try explaining each answer out loud in one sentence before opening the worked answers. Then change one fact and see whether the accounting outcome changes.
← Introduction to AccountingPractice the concepts quizNext topic · Accounting measurement