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Night Shift Allowance Calculator

Work out night shift allowance instantly with clear inputs, formula shown and shareable results.

About Night Shift Allowance Calculator

A night premium is a percentage uplift applied only to hours inside the defined night window. At 16 an hour with a 25% premium, each night hour earns an extra 4.00, so a six-hour night portion adds 24.00 per shift and 288.00 a month across twelve shifts. The enhanced rate of 20.00 is what appears on the payslip for those hours.

Formulas

Premium per hour

premium = base rate x percentage / 100

Monthly allowance

allowance = night hours x premium x shifts

Worked example

With the default values below, Night Shift Allowance Calculator returns Monthly Night Allowance of $288.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Hours worked in the night windowaccepts 0–24 h
6 h
Base hourly rateminimum 0
16
Night premiumminimum 0 %
25 %
Night shifts per monthminimum 0
12

Results

Monthly Night Allowance
$288.00
Allowance Per Shift
$24.00
Enhanced Hourly Rate
$20.00
Annual Allowance
$3,456.00

Step by step

  1. 1Values used
  2. 2Premium per hour
  3. 3Monthly allowance
  4. 4Monthly Night Allowance= 288.00
  5. 5Allowance Per Shift= 24.00
  6. 6Enhanced Hourly Rate= 20.00
  7. 7Annual Allowance= 3,456.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Which hours count as night?

Usually 22:00 to 06:00 under working time regulations, but the paid window is set by contract and can differ.

Is the premium paid on the whole shift?

Normally only on hours inside the night window, so an evening shift ending at 23:00 earns premium for one hour.

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