NZ Fringe Benefit Tax (FBT — Company Vehicle 20% vs 36%) Calculator
Calculate Inland Revenue (IRD) motor vehicle Fringe Benefit Tax (FBT): compare 20% cost price vs 36% depreciated tax value methods and find the lowest tax option.
Calculate Inland Revenue (IRD) motor vehicle Fringe Benefit Tax (FBT): compare 20% cost price vs 36% depreciated tax value methods and find the lowest tax option.
Calculate Inland Revenue (IRD) motor vehicle Fringe Benefit Tax (FBT): compare 20% cost price vs 36% depreciated tax value methods and find the lowest tax option. Calculate exact, penny-accurate projections compliant with 2026 Inland Revenue (IRD) • ACC • Reserve Bank of New Zealand (RBNZ) standards using Calconova's deterministic IEEE-754 (Decimal.js) calculation engine with instant breakdowns.
36% Tax Value Method
Per 3-month FBT return
$307 annual savings
63.93% FBT rate applied
Original cost, tax book value, and private availability days.
Detailed side-by-side tax liability.
\text{Cost Price Method Benefit} = 20\% \times \text{GST-inclusive Cost Price} \times \left(\frac{\text{Days Available}}{365}\right) - \text{Employee Contribution} \\
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\text{Tax Value Method Benefit} = 36\% \times \text{Depreciated Tax Value} \times \left(\frac{\text{Days Available}}{365}\right) - \text{Employee Contribution} \\
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\text{Annual FBT Payable} = \text{Taxable Benefit Value} \times \text{FBT Rate (63.93\% flat or 49.25\% alternate)}Under NZ Inland Revenue rules, motor vehicles provided to employees that are available for private use attract Fringe Benefit Tax (FBT). Employers may choose between the Cost Price method (20% of GST-inclusive purchase price per year) or the Tax Value method (36% of depreciated book value per year). For depreciated vehicles, the Tax Value method often produces significant tax savings.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual Reserve Bank of New Zealand (RBNZ) interest rates, IRD PAYE brackets, ACC Earner's Levy, KiwiSaver regulations, and lender criteria may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult a qualified financial advisor, CPA, or official Inland Revenue documentation prior to executing financial commitments.
The Cost Price method uses 20% of the vehicle's original purchase price and remains constant. The Tax Value method uses 36% of the vehicle's depreciated tax book value each year. As a vehicle depreciates over time, the 36% Tax Value method generally yields much lower FBT liabilities.
Yes. In NZ tax law, travel between home and work is legally considered private travel. If the vehicle is taken home overnight, it is deemed available for private use and attracts FBT, unless it meets strict work-related vehicle exemption criteria (e.g. permanently sign-written ute/van with private use prohibited).
The 63.93% flat rate is the grossed-up equivalent of the top 39% individual income tax rate [39% / (100% - 39%) = 63.93%]. Employers can also use the alternate rate (49.25%) or attributed rate calculation to align FBT with the employee's actual marginal tax bracket.
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