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Business days between dates FAQ
This business days between dates FAQ covers inclusion modes, weekend patterns, holidays, large ranges, and breakdown limits. Use it to avoid off-by-one slips before you run the business day counter and share results.
Published: December 28, 2025 · Updated: December 28, 2025 · By FinToolSuite Editorial
Disclaimer
- Educational purposes only; not legal or financial advice.
- Examples are illustrative and simplified.
- Results depend on your inputs and assumptions and are not guaranteed.
- Preset holiday lists can be static and may not cover regional observances.
- Read the Privacy Policy; do not share personal data.
Quick answer: business days between dates FAQ
- Business days are workdays kept after weekends and holidays are removed.
- Inclusion modes (exclude both, include start, include end, include both) can change totals by two days.
- Large ranges may limit breakdown detail; split ranges if you need every kept date.
Counting rules
Counts depend on inclusion mode and weekend pattern. Exclude both is common for “between” wording. Include start or end adds one edge each, and include both adds two if they are business days. Set weekends and holidays first so everyone sees the same total.
Weekends
Standard weekends are Saturday–Sunday, but some teams run Friday–Saturday or Sunday–Thursday. Choose the pattern that matches your market so the business day counter removes the right days.
Holidays
Holiday presets are illustrative and may not include regional or company closures. Load a preset for the right year, then add custom holidays to reflect your policy. This prevents surprises when totals shift around observed days.
Large ranges and breakdowns
Very long ranges may have limited breakdown detail for performance. If you need to see every kept date, split the range into smaller spans, export results, or focus on critical windows around deadlines.
Quick mini table
| Question | Short answer | Where to change it |
|---|---|---|
| Include start? | Adds start if it is a business day. | Inclusion mode selector. |
| Weekend pattern? | Removes those days. | Weekend settings. |
| Exclude holidays? | Removes preset and custom dates. | Holiday toggle and custom list. |
| Range too big? | Breakdown may be limited. | Split into smaller spans. |
Troubleshooting
- Total changed: check inclusion mode and weekend pattern.
- Holiday mismatch: confirm year and add missing custom dates.
- Breakdown missing: range may exceed the safe limit; split it.
- Edge confusion: clarify whether start/end are included.
FAQ
What counts as a business day between dates?
A working day left after your weekend pattern and excluded holidays are removed.
How do inclusion modes work?
Exclude both removes edges; include start/end keeps those edges if valid; include both keeps both.
Do weekends and holidays always get excluded?
Only if you set them. Pick a weekend pattern and enable holiday exclusions.
Why did my total change after picking another year?
Holiday dates shift by year, so totals change when you select a new holiday year.
Can I exclude weekends and holidays together?
Yes. Set the weekend pattern and enable holiday exclusions at the same time.
Can I use this for large ranges?
Yes, but breakdown detail may be limited for very long spans.
Is this guaranteed?
No. Results depend on your inputs and assumptions and are not guaranteed.
Is this legal or financial advice?
No. This is educational only. Confirm with your advisor.
Calculate business days now
Set inclusion mode, weekend pattern, and holidays, then review the business day counter and breakdown.