This package covers individual residents tax for the Zeirishi exam: the local levy's prefectural and municipal components, previous-year income basis, January 1 residency, per-capita and income components, deduction-versus-credit classification, collection routes, filing judgment, and calculation mechanics. It also highlights 住所 determination, standard-rate and non-taxation concepts where questions supply them, with original worked scenarios and a 20-question supporting-knowledge MCQ preview. The MCQ section is not a simulation of the written examination; use the integrated open task for written practice. Confirm current examination requirements, rates, thresholds, and local ordinance details with the NTA and the relevant prefecture or municipality. Build one computation map: income → deductions → base → rate → credits → per-capita → total, then add residency and collection notes. When asked for separate prefectural and municipal amounts, keep the jurisdictions distinct. Practice with the integrated task and verify current local rules with the NTA or municipality.
What the Residents Tax Component Tests
The component tests whether you can explain the local levy's structure, identify the prefectural and municipal components, and apply a disciplined computation.
Individual residents tax is a local levy separate from national income tax, ordinarily analyzed through prefectural residents tax (県民税) and municipal residents tax (市民税). Each jurisdiction's charge combines a per-capita levy and an income-proportional levy. The income levy generally follows a previous-year income basis, so the tax year and income year are not identical. The January 1 residence rule is central to identifying the imposing prefecture and municipality. Exam preparation should also cover the meaning and determination of 住所, standard rates where a question supplies them, and non-taxation measures that distinguish residents tax from income tax. For exam purposes, explain 住所 as the base of one's life and note that determination depends on objective facts of residence and living situation, not merely a registry entry; confirm the precise current formulation with the NTA. Questions may ask how non-taxation treatment differs from income tax; use the supplied facts and current local rules rather than assuming identical thresholds. Confirm current rates, thresholds, filing details, and ordinance rules with the NTA and the relevant prefecture or municipality.
The written component can ask you to explain rules and to calculate separate prefectural and municipal amounts. This MCQ section checks supporting knowledge; it is not a simulation of the written examination. Use the open task below to practice producing a clear computation trail, classifying each item, and explaining collection and filing consequences.
Priority Map for Preparation
Prioritize the computation chain and classification before isolated rates.
High-yield areas are: the separate prefectural and municipal components; the order income → deductions → base → rate → credits → per-capita → total; income deduction versus tax credit; special versus ordinary collection; January 1 residency and multiple-employer filing; and the adjustment deduction and dividend credit. Lower-yield for a first pass is memorizing every local variation. Learn the logic, then plug in the facts the question supplies.
A useful preparation ratio is roughly 40% computation drills, 30% classification and rule explanation, 20% applied filing and residency scenarios, and 10% error review. Do not memorize a rate without its stage. If a question gives a rate, use the given rate; if it does not, do not import an unstated current rule.
The Computation Chain and Where Items Belong
Every calculation should follow the same chain and label each stage.
Start with income by category. Apply the employment income deduction where relevant, then subtract income deductions to reach the income levy base. Apply the income levy rate to that base. Subtract credits such as the adjustment deduction and dividend credit. Add the per-capita levy to reach the total annual amount. When the question asks for separate prefectural and municipal amounts, repeat the rate, credit, and per-capita stages for each jurisdiction. Finally, identify how the amount is collected: special collection through an employer or pension payer, or ordinary collection through a municipal notice.
Worked mini-scenario using simplified assumptions: salary receipts are 5,000,000; assumed employment income deduction is 1,500,000; other income deductions are 1,100,000. Salary income is 3,500,000. Base is 3,500,000 − 1,100,000 = 2,400,000. At an assumed 10% income levy, tax before credits is 240,000. A 30,000 credit gives 210,000. Add an assumed 5,000 per-capita levy: total 215,000. These are practice assumptions, not a statement of current local law.
Classification Drill: Deductions, Credits, Collection
Classify first; calculate second.
Income deductions reduce the base. Examples include social insurance, spouse, dependent, and medical expense deductions. Tax credits reduce the tax after the rate. Examples include the dividend credit, donation tax credit, adjustment deduction, and housing-loan-related credit where applicable. Collection method is a separate classification: special collection is routed through an employer or pension payer; ordinary collection is paid by the taxpayer in response to a municipal notice.
A quick test: if the item changes the number to which the rate is applied, it is a deduction. If the item changes the tax after the rate, it is a credit. If the item changes who withholds or pays, it is a collection classification. Keep these three axes separate in your notes.
Worked Scenario: Salary, Dividend, Donation
Combine categories, credits, and per-capita in one labeled schedule.
Practice scenario using assumed facts: salary income after employment deduction is 4,200,000; dividend income is 100,000; income deductions are 1,000,000; assumed income levy rate is 10%; dividend credit is 10,000; donation tax credit is 5,000; adjustment deduction is 6,000; per-capita levy is 5,000. Aggregate income = 4,200,000 + 100,000 = 4,300,000. Base = 4,300,000 − 1,000,000 = 3,300,000. Tax before credits = 330,000. Total credits = 10,000 + 5,000 + 6,000 = 21,000. Income levy = 309,000. Total annual amount = 309,000 + 5,000 = 314,000.
Write the schedule in rows: income category; deductions; base; rate; credits; income levy; per-capita; total. Then write one sentence on collection. If the fact pattern includes a second employer or a move, add a filing and residency note. This row discipline prevents the most common error: subtracting a credit twice or applying the rate before deductions.
Applied Judgment: Residency, Filing, Collection
Applied questions usually turn on residency, filing, and who collects.
The January 1 rule normally identifies the imposing jurisdictions for that year's residents tax: the prefecture and municipality where the taxpayer is resident on January 1. A mid-year move affects later years and collection logistics, but it does not automatically shift the current year's prefectural and municipal components. Confirm the facts and any special rule if the question raises them.
Multiple employers are a common trap. One employer's year-end adjustment does not necessarily include wages from another employer. If the facts show additional wages or income not covered, check whether a return or other filing is needed for the prefectural and municipal components. For donations, check the special one-stop conditions and whether the taxpayer has another filing obligation; if the conditions are not met, the ordinary donation credit route may be relevant. For collection, distinguish employer withholding, pension-related special collection, and ordinary municipal payment, and keep the prefectural and municipal amounts separate when asked.
Common Errors and How to Avoid Them
Most lost marks come from stage errors, not arithmetic.
Do not treat a tax credit as an income deduction; do not subtract it from gross income. Do not apply the rate before all income deductions. Do not omit the per-capita levy when asked for the total annual amount. Do not use the current year's income when the question states previous-year income. Do not confuse the municipality of residence on January 1 with the municipality of residence at the end of the year. Do not assume one employer's year-end adjustment covers a second employer or side business.
Also avoid importing national income tax rules wholesale. Residents tax has its own combination of per-capita and income components, local administration, and collection routes. If a question supplies a rate, threshold, or assumption, use only that. If a current rule is needed and not supplied, state that it must be confirmed with the NTA or municipality rather than inventing it.
Integrated Practice Task and Self-Check Rubric
Complete the task in a labeled schedule and score your reasoning with the rubric.
Integrated task using practice assumptions only: A taxpayer is resident in City A on January 1. Main-employer salary receipts are 6,000,000; the taxpayer also earned 400,000 from a second employer that was not included in the main employer's year-end adjustment. Assume total salary receipts are 6,400,000 and the employment income deduction is 1,600,000. Social insurance deduction is 600,000; assumed life insurance deduction is 40,000; assumed spouse deduction is 330,000; dividend income is 100,000; assumed dividend credit is 10,000; assumed donation tax credit is 5,000; combined illustrative income levy rate is 10%; per-capita levy is 5,000. Compute salary income, aggregate income, base, income levy, total annual amount, and state the filing and collection issues.
Model answer: salary income = 6,400,000 − 1,600,000 = 4,800,000. Aggregate income = 4,800,000 + 100,000 = 4,900,000. Income deductions = 600,000 + 40,000 + 330,000 = 970,000. Base = 4,900,000 − 970,000 = 3,930,000. Tax before credits = 393,000. Credits = 10,000 + 5,000 = 15,000. Income levy = 378,000. Total = 378,000 + 5,000 = 383,000. Because the second employer's wages were not covered by the main employer's adjustment, check whether a residents tax return or other filing is required. Confirm collection route separately and keep prefectural and municipal amounts distinct when the question asks for each.
Self-check rubric: 1) each income category and deduction is correctly labeled and all wage sources are included; 2) base is computed before the rate; 3) credits are applied after the rate and not double-counted; 4) per-capita levy is added for the total; 5) filing and collection consequences are stated with appropriate confirmation. Deduct one point for each missing or misclassified stage. A fully correct answer has a clean audit trail, not just a final number.
Study Sequence and Exam-Day Workflow
Use a short cycle of mapping, drilling, correcting, and timed writing.
Week 1: build a one-page map of the computation chain and classification axes. Week 2: drill income deductions and credits with fresh facts. Week 3: calculate bases, rates, credits, per-capita, and totals under simplified assumptions. Week 4: work applied scenarios on January 1 residency, multiple employers, donations, and collection. Week 5: complete one integrated open task daily and write the answer in schedule form. Week 6: review errors and practice concise rule explanations. Confirm the current examination format, time, and permitted materials with the NTA before relying on any past format.
Exam-day workflow: read the call of the question; list the tax year and income year; identify the January 1 municipality and prefecture; classify each fact as income, deduction, credit, per-capita, or collection; compute in rows; then answer the filing or judgment issue. End with a check: Did I use the supplied rate? Did I subtract credits after the rate? Did I add per-capita? Did I separate prefectural and municipal amounts when asked? Did I explain collection and filing?
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.