Scenario guide
Next business day after Sunday: how it works
The next business day after Sunday depends on your weekend pattern, holiday exclusions, and whether you want the next or same business day. With a Sat–Sun weekend, Monday is typical. In regions with a Fri–Sat weekend, Sunday may already be a working day. Excluding a holiday Monday can push the result to Tuesday. Use the business day calculator to exclude weekends and holidays before you share a result.
Published: January 7, 2026 · Updated: January 7, 2026 · By FinToolSuite Editorial
Disclaimer
- Educational purposes only; not legal, tax, or financial advice.
- Examples are illustrative and simplified.
- Results depend on your inputs and assumptions and are not guaranteed.
- Holiday presets can be static and may not cover regional observances.
- See the Privacy Policy; do not share personal data.
Quick answer: next business day after Sunday
- Sat–Sun weekend: Monday is the next business day after Sunday.
- Fri–Sat weekend: Sunday may already be the next or same business day.
- Holiday Monday excluded: Tuesday or later can become the result.
Why Sunday behaves differently by country
Weekend patterns differ. Many teams exclude Saturday and Sunday, making Monday the next business day. Others work Sunday and take Fri–Sat as the weekend, so Sunday can be returned in inclusive or exclusive mode. Public holiday calendars also vary, so a Monday holiday can push the next business day to Tuesday. Always set weekend pattern and holidays before deciding whether you can promise a next or same business day response.
Worked examples (illustrative)
Example A: Sunday start, Sat–Sun weekend
Inputs: Start Sunday, weekend Sat–Sun, no holidays, exclusive mode.
Result: Monday is the next business day after Sunday. Illustrative only.
Example B: Sunday start, Fri–Sat weekend
Inputs: Start Sunday, weekend Fri–Sat, no holidays, inclusive mode.
Result: Sunday can be the next or same business day because it is a working day in this pattern.
Example C: Sunday start with a holiday Monday
Inputs: Start Sunday, weekend Sat–Sun, Monday holiday excluded, exclusive mode.
Result: Tuesday becomes the next business day after Sunday. Illustrative only.
What to write down when sharing results
- Mode used: inclusive (next or same business day) or exclusive.
- Weekend pattern chosen, including any custom weekend pattern.
- Holiday calendar, year, and any custom holidays enabled.
- Any cutoff time that could move the effective start.
How to calculate in the tool
Use the finder- Open the next business day finder.
- Pick inclusive for next or same business day or exclusive to move forward.
- Set the weekend pattern (Sat–Sun or Fri–Sat) that matches your case.
- Exclude holidays, especially Monday, if they apply.
- Add a cutoff time if after-hours should roll to the next day.
- Run the calculation and share the settings with your result.
FAQ
Is Monday always the next business day after Sunday?
With Sat–Sun weekends and no holidays, yes. Custom weekends or holidays can change it.
Can Sunday be returned as the next business day?
Yes if you work on Sunday, use a Fri–Sat weekend pattern, and choose inclusive mode when needed.
How do holidays affect Sunday calculations?
Excluding Monday or nearby holidays pushes the next business day forward.
Do I need a custom weekend pattern?
Use one if your region treats Sunday as a working day. Set it before running the calculator.
Is this guaranteed or advice?
No. It is educational. Confirm details locally.
Confirm your next business day
Set weekend, holidays, and mode, then share the result with confidence.