Business Days in January 2028 for Japan
January 2028 has 20 eigyo-bi under the Japanese statutory holiday calendar. January 2028 contains one Japanese statutory holiday on a weekday. The month covers 31 calendar days, of which 10 are Saturday and Sunday. That count drives invoice cycles, payroll runs, and any contract that defines deadlines as a number of eigyo-bi in Japan.
eigyo-bi
20
Calendar Days
31
Weekend Days
10
shukujitsu
1
Work Weeks
4.0
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 New Year's Day | 2 wknd | |||||
3 | 4 | 5 | 6 | 7 | 8 wknd | 9 wknd |
10 Coming of Age Day | 11 | 12 | 13 | 14 | 15 wknd | 16 wknd |
17 | 18 | 19 | 20 | 21 | 22 wknd | 23 wknd |
24 | 25 | 26 | 27 | 28 | 29 wknd | 30 wknd |
31 |
shukujitsu in January 2028
Japan January deadlines
Oshogatsu (the new year break) closes banks and exchanges through January 3 by long-standing custom and the Banking Act. Withholding tax (Gensen Choshu Zei) for December must be remitted by January 10. Companies with March 31 year-ends are in Q3 of their fiscal year. Coming of Age Day on the second Monday closes banks.
Day-of-week distribution
The count of each weekday in January 2028. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific weekday landing in-month.
| Day | Count |
|---|---|
| Monday | 5 |
| Tuesday | 4 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 4 |
| Saturday | 5 |
| Sunday | 5 |
Japan reporting cycles and business-day rules
Japanese business-day cycles align with gensen choshu zei (withholding tax) on the 10th, shakai hoken hi (social insurance) by the end of the month, and quarterly hojin zei (corporate tax) instalments. The Zengin Data Telecommunication System clears domestic transfers same-day; the Bank of Japan operates BOJ-NET as the wholesale RTGS system. JFY (Japanese fiscal year) runs April to March for most listed companies and the government, so quarter-end cycles do not align with calendar quarters. Half-year shoyo (bonus) payments cluster mid-June and mid-December.
January 2028 eigyo-bi compared by country
Working-day counts vary across countries because each country observes its own public holidays. The table below puts Japan alongside the other ten supported holiday calendars for January 2028.
| Country | Business Days | Holidays this month |
|---|---|---|
| 🇺🇸United States | 20 | Martin Luther King Jr. Day |
| 🇬🇧United Kingdom | 20 | New Year's Day (observed) |
| 🇨🇦Canada | 20 | New Year's Day (observed) |
| 🇦🇺Australia | 19 | New Year's Day (observed), Australia Day |
| 🇮🇳India | 20 | Republic Day |
| 🇵🇭Philippines | 20 | Chinese New Year (approximate) |
| 🇫🇷France | 21 | None |
| 🇩🇪Germany | 21 | None |
| 🇯🇵Japan (this page) | 20 | Coming of Age Day |
| 🇲🇽Mexico | 21 | None |
| 🇸🇬Singapore | 19 | Chinese New Year Day 1 (approximate), Chinese New Year Day 2 (approximate) |
How January 2028 compares year over year
January 2027 had 19 eigyo-bi, so January 2028 has 1 more working day year over year. On the surrounding months, December 2027 has 23 eigyo-bi and February 2028 has 19. Looking forward, January 2029 has 21 eigyo-bi under the same Japanese statutory holiday calendar.
Using this calculator in Japan
A Tokyo-listed manufacturer's keiri-bu uses the 20-day January 2028 count to align gensen choshu zei (withholding tax) remittance on the 10th with Zengin-system clearing windows and Bank of Japan settlement. A Yokohama trading company uses the count to track JFY (April to March) quarter-end accrual cycles. An Osaka construction subcontractor uses eigyo-bi math to align shitauke-ho subcontractor payment timelines with Golden Week and Obon closures.
For informational purposes only
This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.