AQA A-Level Accounting: Accounting for organisations with incomplete records (7127)

This guide covers section 3.14, Accounting for organisations with incomplete records, of the AQA A-level Accounting (7127) specification (version 1.1, October 2026, for A-level exams from June 2019 onwards). The qualification is not tiered. The specification places section 3.14 in the content assessed by Paper 1, a 3-hour written exam, and you must use a calculator in the exam.

Use it with the revision notes and the practice questions. It draws on sole trader financial statements, the control accounts in verification of accounting records and the ratios in analysis and evaluation of financial information. See also the AQA A-level Accounting hub, the 7127 checklist and the free diagnostics. All businesses and figures are invented.

What section 3.14 covers

Specification content (3.14)	What you must be able to do
Calculating profit where records are too poor to prepare income statements	Draw up statements of affairs and find profit from the change in capital
Applying accounting techniques to prepare and analyse financial statements with incomplete records	Find missing figures using control/total accounts, cash accounts, bank accounts, ratios (mark-up, gross profit margin, inventory turnover, profit in relation to revenue), depreciation, profit or loss on disposal, and the financial statements themselves
Benefits and limitations of different recording systems	Compare single entry and double entry records

What “incomplete records” means

Many small sole traders never keep a full double entry system. They may keep only a cash book, a pile of invoices and bank statements. This is single entry record keeping: each transaction is noted once, if at all. There is no ledger, so there is no trial balance to work from.

Your job is to rebuild the missing figures. Two situations come up:

1. Almost nothing is recorded. You can list assets and liabilities at the start and end of the year, but not income and expenses. You find profit with statements of affairs.
2. Some records exist. You have bank statements, opening and closing balances and some notes. You use the accounting equation and the double entry model to rebuild each figure, then prepare a full income statement and statement of financial position.

Profit from statements of affairs

A statement of affairs lists a business’s assets and liabilities at one date. It is set out like a statement of financial position, but it is built from valuations and lists rather than from ledger balances. Its balancing figure is the owner’s capital:

Capital = Assets - Liabilities

Capital changes for only four reasons, so:

Closing capital = Opening capital + Capital introduced + Profit - Drawings
Profit = Closing capital - Opening capital + Drawings - Capital introduced

Drawings are added back because they reduced capital without being an expense. Capital introduced is taken off because it raised capital without being earned.

Worked example 1: profit from statements of affairs

Tamsin Ollerton runs a mobile dog grooming service. She keeps no books. Her accountant lists the following.

	1 April 2025 £	31 March 2026 £
Van (valuation)	9,000	7,200
Grooming equipment	2,400	3,100
Inventory of shampoos	350	410
Trade receivables	280	360
Bank	1,640	2,950
Trade payables	190	240
Electricity accrued	–	80
Bank loan	–	4,000

She drew £1,600 a month and paid in £5,000 she inherited.

                          1 Apr 2025     31 Mar 2026
Total assets                  13,670          14,020
Less total liabilities          (190)         (4,320)
Capital                       13,480           9,700

Change in capital    9,700 - 13,480        = (3,780)
Add drawings         1,600 x 12            = 19,200
Less capital introduced                    = (5,000)
Profit for the year                          10,420

Capital fell by £3,780, yet the business made a profit of £10,420. The fall is explained by drawings being larger than profit plus the inheritance. Without the adjustment you would wrongly report a loss.

The method gives one profit figure only. It cannot show revenue, gross profit or individual expenses, so it supports little analysis.

Rebuilding figures with total accounts, cash and bank accounts

When some records survive, you rebuild each ledger account in outline. The missing figure is the one that makes the account balance.

• Total (control) trade receivables account finds credit sales.
• Total (control) trade payables account finds credit purchases.
• Cash account finds cash takings, or drawings taken from the till.
• Bank account (a summary of bank statements) finds the closing bank balance or a missing payment.

These are the same accounts as the sales and purchases ledger control accounts you met in section 3.4, used here to solve for an unknown.

Worked example 2: Brindle Hardware, year ended 31 December 2025

Information: trade receivables £3,200 at the start and £4,100 at the end; £41,600 received from credit customers and £300 written off as irrecoverable. Trade payables £5,600 at the start and £4,900 at the end; £58,300 paid to suppliers and £400 discounts received. Cash in hand £150 at the start and £210 at the end. From cash takings the owner paid wages £9,800, sundry expenses £1,240 and drawings £7,800, and banked £26,500. Bank balance at the start £2,860; rent paid £6,000.

              Total trade receivables account
Balance b/d          3,200   Bank                    41,600
Credit sales (bal)  42,800   Irrecoverable debts        300
                             Balance c/d              4,100
                    46,000                           46,000

               Total trade payables account
Bank                58,300   Balance b/d              5,600
Discounts received     400   Credit purchases (bal)  58,000
Balance c/d          4,900
                    63,600                           63,600

                      Cash account
Balance b/d            150   Bank                    26,500
Cash sales (bal)    45,400   Wages                    9,800
                             Sundry expenses          1,240
                             Drawings                 7,800
                             Balance c/d                210
                    45,550                           45,550

                      Bank account
Balance b/d          2,860   Trade payables          58,300
Trade receivables   41,600   Rent                     6,000
Cash                26,500   Balance c/d (bal)        6,660
                    70,960                           70,960

Revenue = 42,800 + 45,400 = £88,200. Purchases are £58,000 and the closing bank balance is £6,660. Note the cash account: takings paid out before banking were never recorded anywhere else, so leaving them out would understate revenue.

Using ratios to find missing figures

You must know these formulae from the specification’s appendix of accounting ratios:

Ratio	Formula
Mark-up	Gross profit / Cost of sales x 100
Gross profit margin	Gross profit / Revenue x 100
Rate of inventory turnover	Cost of sales / Average inventory (average of opening and closing)
Profit in relation to revenue	Profit for the year / Revenue x 100

Mark-up is based on cost; margin is based on selling price. Convert by building a price out of 100:

Mark-up 25%:  cost 100, GP 25, revenue 125  ->  margin = 25/125 = 20%
Margin 40%:   revenue 100, GP 40, cost 60   ->  mark-up = 40/60 = 66.67%

Worked example 3: inventory lost in a flood

Halden Gifts adds a mark-up of 60% to all goods. A flood on 14 March 2026 damaged its stockroom. Inventory at 1 January was £12,600, purchases to 14 March £31,500 and sales £44,800. Undamaged inventory at cost is £1,900.

Cost of sales = 44,800 x 100/160          = 28,000
Expected closing inventory
  = opening + purchases - cost of sales
  = 12,600 + 31,500 - 28,000              = 16,100
Inventory lost = 16,100 - 1,900           = 14,200

The loss is £14,200 at cost. Dividing by 1.60 (not multiplying by 0.60) is the key step: 60% of sales would be a margin, not a mark-up.

Worked example 4: working back through the income statement

Esk Outdoor’s revenue was £88,000 with a gross profit margin of 25%. Its rate of inventory turnover was 6 times, opening inventory was £9,000, and profit in relation to revenue was 9%.

Gross profit         = 88,000 x 25%          = 22,000
Cost of sales        = 88,000 - 22,000       = 66,000
Average inventory    = 66,000 / 6            = 11,000
Closing inventory    = (2 x 11,000) - 9,000  = 13,000
Purchases            = 66,000 + 13,000 - 9,000 = 70,000
Profit for the year  = 88,000 x 9%           = 7,920
Total expenses       = 22,000 - 7,920        = 14,080

This is “using the financial statements to find missing figures”: you lay out the income statement, fill what you know, and each blank becomes a balancing figure. Check: mark-up = 22,000 / 66,000 = 33.33%, which matches a 25% margin.

Depreciation and disposals with missing information

Non-current asset accounts can also hide a missing figure, often the cost of a new asset.

Worked example 5: Garrick Joinery machinery

At 1 January 2025 machinery cost £40,000 with accumulated depreciation of £14,500. A machine costing £8,000, bought three years earlier, was sold for £3,100. The asset register shows machinery at cost of £47,500 at 31 December 2025. Policy: 20% straight line on cost of machinery held at the year end; no charge in the year of disposal.

Depreciation on machine sold  = 8,000 x 20% x 3   = 4,800
Carrying amount at disposal   = 8,000 - 4,800     = 3,200
Loss on disposal              = 3,200 - 3,100     =   100

Cost of new machinery = 47,500 - (40,000 - 8,000) = 15,500
Depreciation for 2025 = 47,500 x 20%              = 9,500
Closing accumulated depreciation
  = 14,500 - 4,800 + 9,500                        = 19,200

The machinery account at cost shows opening 40,000 + purchases 15,500 - disposal 8,000 = 47,500. The loss of £100 goes to the income statement as an expense, and the £15,500 purchase also appears as a payment in the bank account.

Preparing full financial statements: an order of work

1. Draw up an opening statement of affairs to find opening capital.
2. Prepare a bank summary and a cash account; find any missing receipt, payment or balance.
3. Use total accounts to find credit sales and credit purchases. Add cash sales and cash purchases.
4. Adjust expenses for opening and closing accruals and prepayments (expense = paid + closing accrual - opening accrual, or the prepayment version).
5. Work out depreciation and any profit or loss on disposal.
6. Prepare the income statement, then the statement of financial position. Closing capital = opening capital + profit - drawings (+ capital introduced).

If the statement of financial position balances, your missing figures are consistent. The practice questions include a full set of statements built this way.

Single entry and double entry records compared

	Single entry	Double entry
Benefits	Cheap and quick; needs little skill; may be enough for a very small cash business	Arithmetic check through the trial balance; full income statement and statement of financial position; control over receivables, payables and inventory
Limitations	No trial balance, so errors and fraud go unnoticed; profit may be found only as a total; little basis for ratio analysis, budgeting or a loan application; accountant’s fees to rebuild the records each year	Takes more time and bookkeeping skill; costs more to run; still does not catch every error

In an evaluation, weigh the size and complexity of the business. A market trader with cash sales and few assets may cope with single entry. A business with credit customers, staff or a bank loan needs reliable figures, and double entry (often through accounting software) usually pays for itself.

Common errors

• Forgetting to add back drawings, or to subtract capital introduced, when finding profit from capital.
• Treating mark-up as if it were margin (multiplying sales by the mark-up %).
• Ignoring payments made out of cash takings before banking, so cash sales are understated.
• Putting discounts received or irrecoverable debts on the wrong side of a total account.
• Using closing inventory in place of average inventory in the inventory turnover ratio.
• Charging depreciation on an asset sold when the policy says none in the year of disposal.
• Writing that a statement of affairs is “the same as” a statement of financial position. It is built from lists and valuations, not ledger balances.

Official syllabus

AQA, A-level Accounting (7127) specification, version 1.1, October 2026, for A-level exams from June 2019 onwards: section 3.14, Accounting for organisations with incomplete records.