Furusato Tax Limit Calculator
Enter your income, family structure, and deductions to calculate the maximum donation amount with only ¥2,000 out-of-pocket.
This tool is based on Japan's tax system (income tax and resident tax). It does not apply to residents outside Japan.
* Housing loan deduction significantly reduces donation limit
Donate up to this amount with only ¥2,000 self-pay
Calculation Breakdown
* Social insurance is estimated at ~15% of income. Check your withholding slip for accuracy.
Reference: Limit by Income
| Income | Single | Married | Married + 1 Child |
|---|---|---|---|
| ¥3000K | ¥28,000 | ¥19,000 | ¥10,000 |
| ¥4000K | ¥42,000 | ¥33,000 | ¥24,000 |
| ¥5000K | ¥61,000 | ¥49,000 | ¥40,000 |
| ¥6000K | ¥77,000 | ¥68,000 | ¥58,000 |
| ¥7000K | ¥108,000 | ¥85,000 | ¥76,000 |
| ¥8000K | ¥130,000 | ¥119,000 | ¥108,000 |
| ¥9000K | ¥153,000 | ¥142,000 | ¥131,000 |
| ¥1,0000K | ¥177,000 | ¥166,000 | ¥156,000 |
* These are estimates. Actual limits vary based on deductions.
How to Use
- STEP 1
- Set your gross annual income using the slider
- STEP 2
- Enter spouse status and number of dependents
- STEP 3
- Add iDeCo or life insurance deductions if applicable
- STEP 4
- Your donation limit is calculated automatically
Notes
- This tool provides estimates based on Japan's 2024 tax system
- This is an estimate; actual deductions vary by individual circumstances
- Social insurance is estimated at ~15% of income
- Verify your limit with official tax documents
Tips
Furusato tax deductions apply to the following year's resident tax
One-Stop Special Exception allows deduction without filing returns (up to 5 municipalities)
iDeCo and mortgage deductions reduce your Furusato tax limit
Donations until December 31 count for the current year
FAQ
QUESTION 1
What if I donate over the limit?
The excess becomes your self-pay. For example, if your limit is ¥50,000 and you donate ¥60,000, your self-pay becomes ¥12,000.
QUESTION 2
One-Stop vs Tax Return - which is better?
The deduction amount is the same. However, One-Stop is limited to 5 municipalities. If filing for medical deductions, you must include Furusato tax.
QUESTION 3
Why does my result differ from other sites?
Different estimation methods for social insurance and deductions cause variations. The most accurate is using your withholding slip.
QUESTION 4
What if my income fluctuates?
The limit is based on Jan-Dec income. If uncertain, estimate conservatively to avoid over-donating.
* Results are estimates. Actual deductions may vary based on tax authority decisions.