Subsidised Transport FBT Calculator NZ 2026

This calculator works out fringe benefit tax (FBT) on subsidised or free travel that a transport operator - airline, bus, ferry, rail or coach company - provides to its own staff, using the special 25% highest-fare rule in section CX 8 of the Income Tax Act 2007. Start with the eligibility check, since this rule only applies if your business is primarily a public transport provider; other employers use the general unclassified benefit rules instead. For each trip, enter the highest public fare a member of the public could be charged for the same class of travel, the amount your employee actually paid, how many trips they take a year, and whether the benefit is taxed at the 63.93% single rate or the 49.25% pooled rate. The calculator returns the 25% threshold the employee needed to pay to avoid FBT, the taxable value per trip and for the year, and the annual FBT payable, along with a note on whether FBT applies and whether the benefit sits above or below the $1,000 pooling threshold. Use it to check individual staff travel concessions or to build up figures across your workforce before completing an IR420 return. Because identifying the true "highest public fare" can involve judgement calls around premium cabins and surge pricing, treat the results as an estimate and confirm your treatment with a tax adviser or IRD.

Updated  Implements section CX 8 (Income Tax Act 2007) and the $1,000 attribution threshold for subsidised transport.
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Eligibility check

If no, the special 25% subsidised transport rule does NOT apply. Use the general unclassified benefit rules instead. The 1 April 2023 public transport exemption may apply if you provide public transport for home-to-work travel.

Per-trip / per-route calculation

Enter the highest public fare and what the employee paid for one trip or route, then the calculator works out the taxable value per trip and you can multiply for annual usage.

$
The most expensive fare a member of the public could be charged for the same class of travel between the same points. For airlines, this is typically an unrestricted business class fare booked at short notice.
$
The actual cash the employee paid for the trip. Enter $0 if the trip is provided free.
trips
If the trips are different fares, calculate each separately and add together.
Subsidised transport benefits over $1,000 per employee per year can still be pooled if all employees have the same or similar entitlement, in which case the 49.25% pool rate applies.

When subsidised transport FBT applies

Section CX 8 of the Income Tax Act 2007 contains a special rule for businesses whose primary activity is supplying passenger transport to the public. This includes airlines, scheduled bus and coach operators, ferry companies, rail operators, and group companies of the same. When these businesses provide discounted or free travel to their own employees (or employees of group companies), the FBT taxable value is the difference between 25% of the highest public fare for the same trip and what the employee actually paid.

If the employee pays at least 25% of the highest public fare, no FBT applies. This is a different test from other FBT categories, recognising that transport employees commonly travel on their own services and that requiring them to pay full market price would be disproportionate.

How the calculation works

For each trip:

  1. Identify the highest public fare for the same class of travel between the same points at the time the employee travels.
  2. Calculate 25% of that fare.
  3. If the employee paid 25% or more, no FBT applies for that trip.
  4. If the employee paid less, the FBT taxable value is 25% of the highest fare minus the amount the employee paid.
  5. Multiply taxable value by the FBT rate (63.93% single rate or 49.25% pool rate).

Example: Highest public fare for an Auckland to Wellington unrestricted business class flight is $800. An employee pays $50 for the same flight. 25% of $800 is $200. Employee paid $50, which is less than $200, so FBT applies on $200 - $50 = $150 of taxable value. At the single rate, FBT is $95.90 for that trip.

Who counts as "transport business"

The rule applies if your business is supplying public passenger transport by air, road, rail, or sea. Examples include:

  • Air New Zealand, Jetstar, and other airlines
  • InterCity, GreatSights, and other scheduled coach operators
  • KiwiRail and TranzAlpine passenger services
  • Interislander, Bluebridge, and other ferry operators
  • Auckland Transport, Metlink, ECan public transport (note: most council operators are subject to additional rules)
  • Group companies of any of the above (e.g. Air New Zealand Engineering)

The rule does NOT apply to non-transport businesses providing public transport benefits to staff (such as a tech company subsidising staff bus passes). Those benefits fall under the general unclassified benefit rules, with the 1 April 2023 public transport exemption potentially applying for home-to-work travel.

Pool versus attribute

Subsidised transport benefits have a $1,000 annual threshold per employee. Below the threshold, the benefits are pooled by default. Above the threshold, the benefits must normally be attributed to the individual employee, but can still be pooled if all employees have the same or similar entitlement (the standard staff travel concession). Pooling means the lower 49.25% rate applies (or 63.93% for major shareholder-employee pools).

Sources

This calculator provides an estimate only. Always verify your treatment with a tax adviser or refer to ird.govt.nz. The "highest public fare" requires careful identification: it is the highest fare a member of the public could be charged at the time of travel, which may include surge pricing, premium cabins, and unrestricted booking conditions.

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Frequently asked questions

What is the subsidised transport FBT rule in NZ?

If a business in the transport industry (airlines, buses, ferries, rail) provides discounted travel to employees, FBT applies if the employee pays less than 25 percent of the highest public fare for the same trip. The taxable value is 25 percent of the highest public fare minus the amount the employee actually paid. This rule is in section CX 8 of the Income Tax Act 2007 and applies only to businesses whose primary activity is providing public transport.

Does the subsidised transport rule apply to all NZ businesses?

No. The subsidised transport rule only applies to businesses whose business is supplying transport to the public, such as Air New Zealand, InterCity, KiwiRail, ferry operators, and similar. For other businesses providing public transport benefits to employees (such as a non-transport company subsidising bus passes for staff), the unclassified benefit rules apply, and the 1 April 2023 public transport exemption may make the benefit FBT-exempt entirely.

How does the highest public fare rule work?

The highest public fare is the most expensive fare a member of the public could be charged for the same class of travel between the same points at the time the employee travels. For example, an unrestricted business class ticket purchased at short notice might be the highest fare for an Auckland to Wellington route. The 25 percent threshold is calculated against this highest fare, not against an average or discounted fare.

Are subsidised flights for airline staff subject to FBT?

Yes, if the staff fare is less than 25 percent of the highest public fare for that route. For example, if the highest public business class fare from Auckland to Wellington is $800 and an Air New Zealand employee pays $50 for the same flight, FBT applies on the difference: 25 percent of $800 = $200, minus $50 paid = $150 taxable value. If the employee pays $200 or more, no FBT applies because they have met the 25 percent threshold.

Can subsidised transport benefits be pooled?

Yes. Subsidised transport benefits with an annual taxable value above $1,000 per employee can still be pooled for FBT purposes if all employees have the same or similar entitlement. Below $1,000 per employee per year, the benefits are below the attribution threshold and are pooled by default. Pooled benefits are taxed at 49.25% (or 63.93% for major shareholder-employees).