Business Days in September 2025 for Switzerland
September 2025 has 22 working days under the Swiss federal holiday calendar. September 2025 contains no Swiss federal holidays on a weekday. The month covers 30 calendar days, of which 8 are Saturday and Sunday. That count drives invoice cycles, payroll runs, and any contract that defines deadlines as a number of working days in Switzerland.
working days
22
Calendar Days
30
Weekend Days
8
public holidays
0
Work Weeks
4.4
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 wknd | 7 wknd |
8 | 9 | 10 | 11 | 12 | 13 wknd | 14 wknd |
15 | 16 | 17 | 18 | 19 | 20 wknd | 21 wknd |
22 | 23 | 24 | 25 | 26 | 27 wknd | 28 wknd |
29 | 30 |
public holidays in September 2025
No Swiss federal holidays fall on a weekday in September 2025, so banks and Switzerland financial markets keep their regular schedule for the entire month.
Switzerland September deadlines
Eidgenössischer Dank-, Buss- und Bettag (Federal Day of Thanksgiving) on the third Sunday of September is observed but as a Sunday, does not affect working days. Monthly MWST cycles continue. The SNB monetary policy assessment typically falls in late September with the autumn forecast.
Day-of-Week Distribution
The count of each weekday in September 2025. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific day of the week landing in-month.
| Day | Count |
|---|---|
| Monday | 5 |
| Tuesday | 5 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 4 |
| Saturday | 4 |
| Sunday | 4 |
Switzerland reporting cycles and business-day rules
Swiss business-day cycles align with ESTV (Federal Tax Administration) Mehrwertsteuer (MWST) quarterly returns due by the last day of the month after each quarter-end (Form 0552), and PostFinance / SIX SIS interbank settlement on bank business days. The Swiss National Bank (SNB) holds Monetary Policy Assessments quarterly in March, June, September, and December. SIX Swiss Exchange trades Mon-Fri excluding the federal Swiss National Day (1 August) and Christmas/Boxing Day. Cantonal tax filings vary by canton (typically March 31 for individuals). SwissBanking and FINMA regulate the financial-services sector with quarterly listed-entity disclosure cycles.
September 2025 working days compared by country
Working-day counts vary across countries because each country observes its own public holidays. The table below puts Switzerland alongside the other ten supported holiday calendars for September 2025.
| Country | Business Days | Holidays this month |
|---|---|---|
| 🇺🇸United States | 21 | Labor Day |
| 🇬🇧United Kingdom | 22 | None |
| 🇨🇦Canada | 20 | Labour Day, National Day for Truth and Reconciliation |
| 🇦🇺Australia | 22 | None |
| 🇮🇳India | 22 | None |
| 🇵🇭Philippines | 22 | None |
| 🇫🇷France | 22 | None |
| 🇩🇪Germany | 22 | None |
| 🇯🇵Japan | 20 | Respect for the Aged Day, Autumnal Equinox Day |
| 🇲🇽Mexico | 21 | Día de la Independencia |
| 🇸🇬Singapore | 22 | None |
How September 2025 compares year over year
September 2024 had 21 working days, so September 2025 has 1 more working day year over year. On the surrounding months, August 2025 has 20 working days and October 2025 has 23. Looking forward, September 2026 has 22 working days under the same Swiss federal holiday calendar.
Using this calculator in Switzerland
A Zurich treasury operator uses the 22-day September 2025 count to align SIX SIS (Swiss SIC system) RTGS settlement with ESTV (Federal Tax Administration) MWST quarterly cycles on the 31st of the month following each quarter-end. A Geneva private banking team uses business-day math to track SIX Swiss Exchange settlement and SNB Monetary Policy Assessment decision windows. A Basel pharma controller uses working-day counts to align cantonal tax filings, Swissmedic regulatory deadlines, and BAG (Federal Office of Public Health) reporting cycles.
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.