Income documents required for a Japanese mortgage
Withholding slips, tax certificates, returns, overseas income, bonuses, and company accounts.
Employees typically provide withholding slips and tax certificates; the self-employed provide multiple years of tax returns; and overseas income, bonuses, and company accounts each carry documentation and recognition caveats.
Key points
- Employees: withholding slips (源泉徴収票) and municipal tax certificates (課税証明書).
- Self-employed and company owners: multiple years of tax returns or financial statements.
- Overseas income may count, but currency, tax, continuity, and translation issues can reduce recognition.
- Bonus income may count, but do not rely on uncertain bonuses for affordability.
The document checklist
For employees, lenders commonly request the annual withholding slip (源泉徴収票), one or more years of municipal tax certificates (課税証明書 or 納税証明書), and employment confirmation such as a certificate, contract, and evidence of salary deposits. For sole proprietors and company owners, expect to provide multiple years of final tax returns and, for a company, financial statements. Keep the originals organized, because the final approval stage checks these against what you stated at preapproval, and discrepancies can derail the file.
Overseas income, bonuses, and company accounts
Overseas income sometimes counts, but currency risk, foreign-tax treatment, continuity, and the need for translated documents can reduce how much a lender recognizes. Bonus income may be counted, but households should not rely on uncertain bonuses for affordability — a base-salary-only budget is safer. For company owners, the lender looks past headline salary to the company’s accounts, and a director drawing a low salary from a healthy company, or a high salary from a fragile one, will be assessed on the underlying business. When in doubt, ask each lender exactly which income it will recognize before you rely on it.
Key points to carry away: Employees: withholding slips (源泉徴収票) and municipal tax certificates (課税証明書); Self-employed and company owners: multiple years of tax returns or financial statements; Overseas income may count, but currency, tax, continuity, and translation issues can reduce recognition; Bonus income may count, but do not rely on uncertain bonuses for affordability. Use the linked guides and calculators for the full decision, and confirm anything material with the lender, a licensed broker, a judicial scrivener, or a tax accountant before you act.
Who this is for
- Applicants assembling documents
- Self-employed and dual-income households
What this is not
- A tax-filing guide
- Discrepancies between preapproval statements and final documents can cause a decline; keep records consistent.
Frequently asked questions
What income documents are required?
Commonly withholding slips, tax certificates, employment evidence, and bank statements; the self-employed provide multiple years of tax returns.
How many years of income history are needed?
It is lender-specific; self-employed and variable-income applicants usually need more history.
Does overseas income count for a mortgage?
Sometimes, but currency, tax, continuity, and document issues can reduce how much a lender recognizes.
Does bonus income count for affordability?
Lenders may count it, but households should not rely on uncertain bonuses — a base-salary-only budget is safer.