Business Days Calculator

Counting Business Days

This business days calculator counts eligible weekdays between two dates or adds a chosen number to your start date. Business-day mode excludes Saturdays, Sundays and the selected holidays. Calendar-day mode counts every day.

The starting rule excludes the start day and includes the end day. Change either setting when counting an interval. When adding days, the result is the final counted day. Adding zero returns the start unchanged.

For the starting example, ten business days after Monday 26 October 2026 is Monday 9 November 2026 in New South Wales. The start is excluded, the final Monday is included and four weekend days are skipped. There are no holiday weekdays in that window.

State Holidays and Local Exceptions

The calculator bundles whole-day public holidays for all eight states and territories in 2026, including the published substitute days. A holiday on a weekend is counted as an excluded weekend day. An observed weekday holiday is excluded separately.

The selected state can change your answer. Victoria's standard calendar includes Melbourne Cup. Western Australia's uses the usual King's Birthday date. Regional replacement dates can differ from those standard dates.

Use the local adjustments to treat a replaced holiday as a workday and add its replacement date. You can add up to three extra holidays, including a local show day. Duplicate dates count once and a Saturday or Sunday remains a weekend.

Queensland's Brisbane show holiday and Tasmania's regional holidays are added only when you enter them. Part-day holidays and Tasmania's restricted public-service Easter Tuesday are outside the bundled whole-day calendar. The Fair Work Ombudsman's state holiday lists link to each state's regional details.

Business-day inputs and results must stay within 2026. Calendar-day mode works from 2020 to 2100 because it does not use a holiday calendar.

Settlement Date Calculations

To calculate a settlement scenario, enter the contract's starting date and settlement period, then choose calendar days or business days as the contract requires. Choose whether the starting day counts. For a business-day period, select the applicable state and enter any relevant local holidays.

A 30-calendar-day period and a 30-business-day period produce different dates. Calendar mode keeps the calculated date even when it falls on a weekend or holiday. If the contract moves that date to another day, apply its rollover rule separately.

The result calculates your entered period. Your conveyancer or solicitor determines which contract event starts it and how the contract defines a business day. Bank availability and electronic settlement cut-offs can also affect booking a settlement.

Checking a Rule-Based Deadline

A deadline calculation starts with the rule that creates the deadline. A contract, complaint procedure or statutory service provision can define different start events, excluded days and end times.

Identify that rule's starting event, counting unit and endpoint treatment before entering the dates. Record any rule for a deadline falling on a non-working day. This calculator applies date arithmetic and does not determine legal service, receipt or a time-of-day cut-off.

Download the result to keep the entered dates, counted days and skipped dates with the assumptions. That record lets your processing team reproduce the calculation using the same rule.