What documents should I prepare for Japan tax return 2026?

Gather salary withholding slips, dividend and interest reports, life and earthquake insurance certificates, pension statements, medical receipts, pharmacy summaries, and bank statements. For side gigs, add invoices, contracts, and a ledger. Crypto traders should export exchange CSVs, wallet logs, and fee records. Keep everything organized by category and store digital backups.

How do I fix a medical expense deduction error from the My Number portal?

Compare the auto-imported totals with your own receipts and insurer statements. If items are missing, switch to manual input and attach your corrected totals. Group receipts by patient and provider. Keep originals for five years. Add a simple worksheet that shows calculations, so refund staff can verify quickly without extra questions.

What raises the chance of a side hustle audit?

Common red flags include repeated losses with no plan to improve, round-number expenses, missing invoices, and income that does not match bank deposits. Poor or vague phone answers also hurt. Keep contracts, receipts, and a monthly ledger. File on time, and provide short, factual replies if the tax office contacts you for clarification.

Are EV subsidies taxable on my return?

Many programs are treated as non-taxable grants when documents prove their purpose and terms. Keep the official award notice, dealer invoice showing any price reduction, and proof of payment. If in doubt, add a note with program details and retain all paperwork. Ask your local tax office before filing if rules seem unclear.

Global Market Insights

Japan Tax Filing February 23: My Number Pitfalls, Side-Gig Audit Risks

ByHuzaifa Zahoor February 22, 2026February 22, 2026

Japan tax return 2026 is underway, and small choices can change your refund. We see three hot spots this year: My Number portal auto-imports, EV subsidy paperwork, and audits of side gigs and crypto. Missteps can shrink deductions or trigger checks. We explain what changed, how to fix common errors, and what receipts the National Tax Agency expects. Investors should note the cash flow impact on households in February and March, plus rising demand for simple tax-prep tools.