This package prepares candidates for the Bookkeeping Theory (簿記論) subject of Japan's Zeirishi (tax accountant) examination, focusing on double-entry recording, period-end adjustments, and integrated trial-balance work. It is practice for accounting technique, not tax-law computation. The MCQ set checks supporting knowledge and is not a simulation of the examination; confirm current examination scope, format, and logistical requirements with Japan's National Tax Agency. Use the guide in three passes: build the equation and ledger map; drill adjustment mechanics with fresh numbers; then complete the integrated case in writing and mark it with the rubric. The 20 MCQs are a supporting knowledge check, not a simulation of the examination or a prediction of your score. This is a preview, not full syllabus coverage.
What the Bookkeeping Theory subject rewards
The subject rewards accurate transaction analysis, clean period-end adjustments, and controlled finalisation under time pressure.
The Zeirishi examination's Bookkeeping Theory (簿記論) component is an accounting-technique subject. It asks you to record transactions, classify balances, calculate adjustments, and produce or correct accounting records. It is distinct from the tax-law subjects: the core demand is not computing a tax liability but showing that you can apply bookkeeping rules coherently. The broad scope can include basic merchandise and capital transactions, applied measurement topics such as foreign-currency hedging and retirement benefits, consolidation basics, and an integrated problem that moves from a pre-adjustment trial balance to a post-adjustment trial balance. Because examination emphasis can shift, treat any specific topic list as subject to review and confirm the current scope with the NTA.
The tested skills are connected rather than separate. A transaction must be analysed into its debit and credit effects; accounts must be classified as real or nominal; period-end adjustments must be computed and posted; and the resulting statements must be internally consistent. In an integrated problem, a single misread fact can flow into several balances. Speed matters, but accuracy matters more: a fast but unbalanced answer often loses more marks than a slower, controlled answer.
Prepare for the subject as an accounting-control exercise. Before drilling advanced topics, be able to explain why every entry balances, which accounts carry forward, which accounts close, and how an adjustment changes both a balance-sheet item and an income-statement item. That foundation is what lets you handle unfamiliar fact patterns without memorising an exhaustive list of entries.
Preparation priorities: where marks are built
Prioritise the accounting equation and ledger map, then recurring adjustments, then applied and integrated work.
First priority: the accounting equation and the ledger. Assets equal liabilities plus net assets after every recorded transaction. Debits and credits must be equal in every entry. Assets and expenses normally increase on the debit side; liabilities, net assets, and income normally increase on the credit side. Real accounts carry forward, while nominal accounts close through income summary. If these rules are automatic, journal entries become deductions rather than memorised patterns.
Second priority: recurring period-end adjustments. Depreciation, allowances for doubtful accounts, accrued and prepaid items, and inventory-based cost of goods sold appear repeatedly because they connect the trial balance to the financial statements. Learn the mechanism of each adjustment: what balance is required at the reporting date, what balance already exists, and what entry moves the ledger from the existing balance to the required balance.
Third priority: applied topics and integrated finalisation. Applied areas can include foreign-currency transactions, retirement-benefit accounting, consolidation basics, and a comprehensive pre-adjustment to post-adjustment trial-balance problem. Do not let those topics crowd out the fundamentals. A sensible allocation after a diagnostic is roughly half of study time on ledger mechanics and recurring adjustments, a third on integrated trial-balance practice, and the remainder on applied topics. Adjust that allocation based on your own error log, not on a fixed promise about what will appear.
Use a diagnostic early. Attempt a short journal-entry set, a five-adjustment set, and one integrated trial-balance task. Mark errors by cause: missing account classification, wrong adjustment direction, arithmetic slip, or misread fact. That error profile should determine your next two weeks of study.
The accounting model: debits, credits, and account type
A reliable account map is more useful than memorising entries without context.
Start with the balance-sheet equation and the normal balance of each account family. An asset increase is a debit; a liability or net-asset increase is a credit; income increases are credits; expense increases are debits. Do not treat debit as good or credit as bad. They are directional labels within a double-entry system. For example, a cash capital contribution increases cash (debit) and increases capital or net assets (credit). A cash sale increases cash (debit) and sales (credit). A cash purchase of equipment increases equipment (debit) and decreases cash (credit).
Classify accounts before calculating. Real accounts include assets, liabilities, and net assets; they carry forward to the next period. Nominal accounts include income and expenses; they are closed at period-end. A valuation account is attached to another account and reduces or adjusts its carrying amount. The allowance for doubtful accounts is a contra-asset: it is presented against accounts receivable, not as an independent liability. Accumulated depreciation is a contra-asset against the related depreciable asset.
A trial balance is a control device, not proof of correctness. It tests whether total debit balances equal total credit balances. It does not prove that every transaction was recorded, that the correct accounts were used, or that amounts are properly valued. An omitted entry that affects both sides equally, a compensating pair of errors, or an entry posted to the wrong account can leave the trial balance balanced while the records remain wrong. That is why integrated problems often ask you to locate errors by reasoning about the direction and amount of a difference.
Period-end adjustments with original worked numbers
Adjustments are driven by required ending balances, not by isolated journal-entry templates.
Depreciation. Equipment costs 900,000, has a residual value of 60,000, and a seven-year useful life. Straight-line depreciation is (900,000 − 60,000) ÷ 7 = 120,000 per full year. The adjusting entry is debit depreciation expense 120,000 and credit accumulated depreciation 120,000. Accumulated depreciation is not an expense; it is the cumulative contra-asset. If the asset was held for only part of the year, allocate the annual amount by the months in service.
Allowance for doubtful accounts. Receivables are 500,000 and the estimated uncollectible rate is 2%, so the required ending allowance is 10,000. If the existing allowance has a credit balance of 3,000, the adjustment is 7,000 of expense: debit bad-debt expense 7,000 and credit allowance for doubtful accounts 7,000. If the existing balance were a debit of 2,000, the required credit of 10,000 would need a 12,000 credit adjustment. Always compare the required ending balance with the existing balance, including its sign.
Inventory and cost of goods sold. Beginning inventory is 12,000, purchases are 80,000, purchase returns are 2,000, and ending inventory is 15,000. Cost of goods sold is 12,000 + 80,000 − 2,000 − 15,000 = 75,000. The ending inventory is an asset until sold; it reduces the cost expensed in the period. Do not add ending inventory to purchases.
Accruals and deferrals. A note payable of 240,000 carries 5% annual interest, and four months of interest are unpaid at year-end. Accrued interest is 240,000 × 5% × 4/12 = 4,000. Debit interest expense 4,000 and credit accrued interest payable 4,000. For a prepayment, identify the unused portion. Rent of 180,000 covers twelve months from October 1. By December 31, three months have expired: 45,000 of expense. The remaining 135,000 is prepaid rent. If the payment was initially recorded as rent expense, adjust by debiting prepaid rent 135,000 and crediting rent expense 135,000. If it was initially recorded as an asset, adjust by debiting rent expense 45,000 and crediting prepaid rent 45,000.
Reading an integrated finalisation task
Work from required output backward, and keep a running map of adjustment effects.
In an integrated trial-balance problem, first read what output is required. Is it an adjusted trial balance, a statement of profit or loss, a balance sheet, or a set of correcting entries? Then scan the adjustment facts and mark every account they touch. Do not start posting before you have identified whether an item affects an asset, a liability, an expense, or income. For each adjustment, write the required ending balance, the existing balance, and the difference. That three-column habit prevents the common error of recording the full required balance as the adjustment when a balance already exists.
Keep a control total. If you are preparing an adjusted trial balance, update debit and credit columns as you go and check that they remain equal after each group of adjustments. If they do not, stop and locate the error before continuing. Common causes are posting an adjustment to the wrong side, using the income statement amount instead of the ending balance, or forgetting that a previous adjustment changed an account used by a later one.
When a fact is omitted or misstated, translate it into financial-statement effects. Omitting accrued salaries understates liabilities and understates expenses, so net income is overstated. Omitting a prepaid expense adjustment may overstate expense and understate assets. For interbranch or consolidation items, eliminate internal profit and internal balances before judging the combined result. The goal is not to memorise a correction list but to trace the effect through the equation and the statements.
Finally, close nominal accounts only after all adjustments. Revenue and expense balances flow through income summary; the resulting profit or loss closes to retained earnings. A closing entry made before adjustments will carry the wrong amount forward.
Representative open-task practice
Complete the case in writing, then use the rubric to diagnose process errors as well as final numbers.
Mini-case. A company uses periodic inventory and provides the following pre-adjustment trial balance: cash 80,000 debit; accounts receivable 300,000 debit; beginning inventory 50,000 debit; equipment 600,000 debit; accumulated depreciation 120,000 credit; accounts payable 70,000 credit; capital 500,000 credit; sales 900,000 credit; purchases 400,000 debit; salaries expense 120,000 debit; rent expense 40,000 debit. Additional facts: ending inventory is 60,000; equipment has a residual value of 60,000 and a six-year useful life, with a full year of depreciation to record; the annual charge is based on cost less residual value over the six-year life; the allowance for doubtful accounts should be 2% of receivables and no allowance existed before adjustment; rent expense includes 10,000 that is prepaid at year-end; unpaid salaries at year-end are 15,000. Ignore tax-law computations.
Required: compute cost of goods sold; depreciation expense; bad-debt expense; adjusted rent expense and prepaid rent; adjusted salaries expense and accrued salaries payable; and net income. Write the adjusting entries, not only the final figures.
Self-check rubric. One mark each: (1) cost of goods sold = 50,000 + 400,000 − 60,000 = 390,000; (2) depreciation = (600,000 − 60,000) ÷ 6 = 90,000; (3) bad-debt expense = 300,000 × 2% = 6,000, because no allowance existed; (4) adjusted rent expense = 40,000 − 10,000 = 30,000 and prepaid rent = 10,000; (5) adjusted salaries expense = 120,000 + 15,000 = 135,000 and accrued salaries payable = 15,000; (6) net income = 900,000 − 390,000 − 135,000 − 30,000 − 90,000 − 6,000 = 249,000. Add a process mark for balanced entries and a second process mark for explaining why each adjustment changes both a balance-sheet and an income-statement figure. If your net income differs, trace backward from the first incorrect component rather than changing the final total.
Common errors and how to repair them
Most lost marks come from a small number of recurring control failures.
Direction errors occur when a contra-asset is treated as a liability or accumulated depreciation is treated as an expense. Repair by writing the account family and normal balance beside every account before entering numbers. Existing-balance errors occur in allowance and depreciation problems when the candidate records the required ending balance as the adjustment. Repair by calculating required minus existing, including whether the existing balance is debit or credit.
Period errors occur when a prepayment is expensed in full or an accrual is ignored until payment. Repair by marking the reporting date on a timeline and asking what portion has been consumed or earned. Inventory errors occur when ending inventory is added rather than subtracted in cost of goods sold, or when beginning inventory is omitted. Repair by writing the cost-of-goods-sold formula before substituting numbers.
Trial-balance errors occur when a difference is forced into an adjustment account without identifying the cause. First test one-sided postings, transpositions, and omitted entries. A difference equal to a transaction amount often points to a one-sided posting; a difference divisible by nine may suggest a transposition, though that is only a clue, not proof. Integrated-problem errors often come from misreading a fact or double-counting an adjustment. Repair by keeping a one-line effect map for each fact: account, direction, amount, and statement effect.
Presentation errors also cost marks: mixing real and nominal accounts in closing entries, omitting a contra-asset from the balance-sheet presentation, or reporting a net income figure before all adjustments are posted. Build a final check: does the balance sheet balance, do nominal accounts close, and does every adjustment have an equal debit and credit?
A practical study sequence
Use a six-week cycle of diagnosis, mechanics, adjustments, integrated practice, and error repair.
Week 1: diagnostic and ledger map. Complete mixed journal entries and a trial-balance exercise. Build a one-page account map showing normal balances, real versus nominal treatment, and common contra accounts. Week 2: transaction fluency. Drill sales, purchases, returns, capital transactions, and cash entries with fresh numbers. After each set, explain the entry in words before checking the answer.
Week 3: recurring adjustments. Work depreciation, allowances, accruals, deferrals, and inventory cost of goods sold in small mixed sets. For each item, write the required ending balance first. Week 4: integrated pre-adjustment to post-adjustment trial balances. Use a strict time limit, then mark with a process rubric: fact extraction, adjustment direction, arithmetic, balance, and presentation.
Week 5: applied topics and error log. Review foreign-currency, retirement-benefit, consolidation-basics, and other applied areas only after the core adjustments are stable. Confirm current topic scope with the NTA rather than assuming that a past emphasis is permanent. Rehearse elimination of internal profit and the effect of omitted adjustments. Week 6: mixed timed practice. Alternate short journal-entry sets with one integrated task. Keep an error log with cause codes and reattempt only the failed item types after a delay. Stop adding new material in the final days; rehearse the control routine instead.
Exam-day control routine
Read the required output first, map adjustments, post in controlled batches, and check balance and presentation.
Begin by reading the whole question and marking the required output. Allocate time by task size, not by anxiety. For each fact, note the account, the direction, and whether an existing balance matters. Post adjustments in batches and check debit-credit equality after each batch. If a figure does not fit, leave a clear note and move on; a later fact may resolve the issue.
For written answers, show calculations that make your reasoning checkable. Use column headings and keep debit and credit clearly separated. For integrated problems, compute net income only after all adjustments, and close nominal accounts only after net income is determined. If time remains, perform a final consistency check: balance-sheet equality, allowance and accumulated depreciation presentation, inventory treatment, and the direction of every accrual and deferral.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.