When an invoice says “payment within 30 business days”, a courier promises “delivery in 5–7 business days”, or a bank says a refund takes “7 working days”, you need the actual calendar date. The Business Days Calculator adds a number of business days (Monday–Friday) to a start date, skipping Saturdays and Sundays, and tells you the deadline and its weekday.
How to use the business days calculator
- Choose the start date, for example the order date, invoice date or the day a request was made.
- Enter the number of business days to add.
- Press Find Date.
Counting starts from the next business day. The start date itself is “day 0”, which is how couriers, banks and contracts normally count.
How it works
Count the day only if it is Monday–Friday.
Stop when the count reaches N.
Examples
- Start Monday 2 November 2026 + 10 business days → Monday 16 November 2026 (two weekends skipped).
- Start Friday 6 November 2026 + 30 business days → Friday 18 December 2026.
Business days vs calendar days
| Business days | Approx. calendar days |
|---|---|
| 5 | 7 |
| 10 | 14 |
| 15 | 21 |
| 20 | 28 |
| 30 | 42 |
| 45 | 63 |
As a rule of thumb, multiply business days by 1.4 to estimate calendar days. The exact figure depends on which weekday you start from.
Where business-day deadlines appear in India
- Bank and UPI disputes: under RBI’s turnaround-time framework for failed transactions, banks must reverse failed debits within set timelines (often T+1 to T+5 days), or pay compensation per day of delay.
- Refunds and returns: e-commerce refunds to cards often say “5–7 business days” after the return is picked up.
- Stock market settlement: Indian equities settle on T+1, the next trading day. Exchange holidays and weekends don’t count.
- Payment terms: B2B invoices with “Net 30” usually mean calendar days, but some contracts say business days. Under the MSMED Act, buyers must pay registered micro and small enterprises within 45 days.
- Government services: many citizen-charter timelines for passports, certificates and RTI are counted in working days.
Tips for planning around business days
- A request made on a Friday afternoon effectively starts on Monday. Submit early in the week if timing matters.
- Around long weekends and festival weeks (Diwali, Christmas–New Year), add buffer days. Many businesses run with reduced staff.
- For international work, remember that the UAE and some other Gulf countries now have a Monday–Friday week, while some countries still use Sunday–Thursday.
- To count the working days between two known dates rather than adding them, use the Working Days Calculator.
Frequently asked questions
What is a business day?
Normally any weekday from Monday to Friday that is not a public holiday. Saturdays and Sundays are not business days in most offices, banks and courier services.
Is the start date counted as a business day?
No. Counting starts from the next business day, so “3 business days from Monday” is Thursday.
How many calendar days is 10 business days?
Usually 14 calendar days, because two weekends fall in between. If the period includes a weekday holiday, it takes one day longer.
Does this calculator skip public holidays?
It skips weekends automatically. For each public holiday that falls on a weekday within the period, add one extra business day to your input.
When will my refund of 7 business days arrive?
Enter the date the refund was processed and add 7 business days. If it was processed on a Monday, expect it by the Wednesday of the following week, adjusted for any bank holidays.