Japan Resident Tax Second-Year Shock: Why Your Bill Jumps | MyKyoten

National income tax (所得税, shotokuzei): Withheld from your paycheck monthly, filed in February-March for the previous year

Resident tax (住民税, jūminzei): Calculated by your city/ward based on last year's income, billed in June

The resident tax is always one year behind. When you first arrive in Japan and start working, your employer withholds national income tax immediately-but resident tax? Nothing. Zero. Because the city doesn't know your income yet. They're waiting for you to file your tax return (or for your employer to submit your year-end adjustment in January-February).

Then, in June of your second year, the city sends you a tax bill covering the entire previous year's resident tax in one lump sum (if you're self-employed) or splits it into monthly deductions from your paycheck for the next 12 months (if you're a salaried employee).

For someone earning ¥4-5 million per year, this is roughly ¥15,000-25,000 per month starting June of year two. If you weren't expecting it, your take-home pay suddenly drops by 10-15% and you panic.

税額 (tax amount): About 10% of your taxable income (the exact rate is ~10%, split between prefectural and municipal tax)

納付方法 (payment method): Either "特別徴収" (payroll deduction) or "普通徴収" (direct payment)

If you're salaried and see "特別徴収," your employer handles it-you just watch your paycheck shrink starting June. If you see "普通徴収," you need to pay the city directly using the attached payment slips at a convenience store or bank.

[WARNING BOX] If you quit your job or leave Japan before paying the full resident tax amount, you're still on the hook for the remaining balance. The city will send bills to your last registered address, and if you ignore them, the debt follows you and can block visa renewals if you return to Japan.

What If I Didn't Work a Full Year in My First Year?

Look, this is common. You arrive in Japan in, say, October 2025 and work for three months. In June 2026, your resident tax bill will only cover those three months of 2025 income. So it'll be relatively small-maybe ¥30,000-50,000 total instead of ¥200,000+.

But here's the trap: In June 2027, you'll get hit with the full-year bill for your 2026 income (which was a complete 12 months of work). Some people mistakenly think "I paid resident tax last year and it was cheap, so it'll be the same this year." Nope. Year three is when the real bill lands.

Reality check: "The resident tax system is designed to extract money from people after they've already spent their income and can't budget for it anymore."

Dependents (扶養控除, fuyō kōjo): If you're supporting family members (spouse, kids, parents) either in Japan or overseas

The big one most foreigners miss: Dependent deductions for family abroad. If you're sending money home to support your parents or siblings, you can claim them as dependents and reduce your taxable income by ¥380,000-630,000 per person. You need to submit proof (remittance records, family registry documents) with your year-end tax adjustment.

This can drop your resident tax bill by ¥30,000-60,000 per dependent.

If you quit your job and leave Japan mid-year, you still owe the remaining resident tax for the previous year. Here's what happens:

If employed: Your company will deduct the entire remaining balance from your final paycheck (called 一括徴収, ikkatsu chōshū). If your last paycheck isn't big enough to cover it, you'll get a bill by mail.

If self-employed: You're responsible for paying all four installments even if you leave. The city doesn't care that you're gone.

Some people try to dodge this by not updating their address when they leave. Bad idea. The debt gets reported to immigration, and if you ever return to Japan on a new visa, you'll be flagged and potentially denied entry until you pay.

✅ Open the envelope immediately (don't assume it's junk mail)

✅ Check the payment method (特別徴収 = employer handles it, 普通徴収 = you pay directly)

✅ If self-employed, set aside cash for the first installment (due in late June)

✅ Review your deductions - if you claimed dependents but they're not listed, call city hall to correct it

Here's the deal: Japan has two main income taxes:

The notice is a single sheet of paper, entirely in Japanese, with a breakdown like this:

課税所得 (taxable income): Your total income from the previous year minus deductions

The resident tax system is designed to extract money from people after they've already spent their income and can't budget for it anymore.

The Catch: You Can't Avoid It, But You Can Reduce It

Life insurance premiums (生命保険料控除): If you have Japanese life insurance

The Frugal Mindset: Pay at the Convenience Store, Not the Bank

If you're paying resident tax directly (普通徴収), you'll get four payment slips. You can pay at:

Convenience stores (7-Eleven, Lawson, FamilyMart)

Edge Case: What If I Leave Japan Before Paying?

Your Action Checklist (When the Bill Arrives in June)

Official notice reference - 住民税決定通知書 sample