Subsidised Transport FBT Calculator NZ 2026

If your business supplies passenger transport to the public (airline, bus, ferry, rail, or coach operator) and provides discounted or free travel to employees, FBT applies under the special rule in section CX 8 of the Income Tax Act 2007. The taxable value is the difference between 25% of the highest public fare for the trip and the amount the employee actually paid. This calculator works out the per-trip FBT, the annual FBT for a regular concession, and whether the benefit qualifies to be pooled at the lower 49.25% rate.

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

• Income Tax Act 2007 Section CX 8 - Subsidised transport
• IRD - Employer provided goods and services (subsidised transport)
• IRD - Attribution thresholds (subsidised transport $1,000)
• IR409 Fringe Benefit Tax Guide (PDF)

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.

Related calculators

• NZ FBT Calculator — calculate FBT on individual benefits
• Public Transport FBT Exemption Checker — for non-transport businesses
• FBT De Minimis Calculator — check unclassified benefit thresholds
• FBT Quarterly Return Estimator — build your IR420 return