Novated Lease Calculator (Australia)

How to use this calculator

Quick start below — or read the full walkthrough for detailed guidance.

If you have a quote: Enter your vehicle price, lease details, annual kilometres, and financial details based on the quote. The calculator then models the cashflow, asset and liability over the lease period and compares your overall financial position across different funding options.

If you do not have a quote: Look up the vehicle's base and drive‑away price online, estimate typical running costs, choose a lease term (1–5 years), and enter a fortnightly lease amount consistent with an effective interest rate of roughly 8–12% (a common market range). This will give you a reasonable ballpark estimate of the overall financial outcome.

Unlike most novated lease calculators, the outputs focus on net outcomes — how much better or worse off you are overall — rather than isolated tax figures.

Frequently asked questions

Does this calculator support the 75% EV FBT rule announced in May 2026?

Yes. The calculator fully supports the new rules. These rules affect the EV FBT exemption and it automatically applies the correct FBT treatment based on the lease start date and vehicle value:

• Leases starting before 1 April 2027 — existing rules apply (full FBT exemption up to the LCT threshold).
• Leases starting 1 April 2027 – 31 March 2029 (transitional period) — vehicles at or below $75,000 remain fully exempt; vehicles above $75,000 but at or below the LCT threshold attract 75% of full FBT (a 25% discount); vehicles above the LCT threshold attract full FBT.
• Leases starting from 1 April 2029 — the 25% FBT discount applies to all eligible EVs at or below the LCT threshold.

No manual adjustment is needed — simply enter your lease start date and vehicle base value and the calculator will apply the appropriate rules automatically.

How accurate is this calculator?

This calculator is the direct evolution of a spreadsheet that has been in continuous public use for over two years. It has been widely shared, scrutinised, and informally peer-reviewed by financially literate users, with numerous edge cases tested and minor issues corrected over time.

This web-based version was not a direct port of the spreadsheet; instead it was rebuilt from first principles. Core components were independently re-derived and implemented in a new calculation engine, then systematically verified against the original spreadsheet across a broad range of test scenarios. The two implementations match to the cent for all test cases.

Does this calculator support fractional lease terms like 13 months or 25 months?

No. The calculator supports whole-year lease durations only (1–5 years), and this is a deliberate design choice. Fractional lease durations introduce ambiguities around residual values, annual running costs, and fortnight counts that are handled inconsistently between providers. Modelling them with false precision would likely produce misleading results.

Why doesn't this calculator display a "tax saving" figure?

You may notice that this calculator does not prominently display a single "tax saved" number — and that is deliberate. Novated lease providers often emphasise tax savings because it is psychologically compelling. However, tax reduction is only one component of the overall financial equation. A novated lease may also involve higher effective interest rates, management fees, brokerage, GST interactions, and early‑termination risks. Focusing solely on "tax saved" can therefore be misleading as explained in this explanatory article and a fully worked example.

Does it consider childcare subsidy, HECS, or Div 293 impacts?

Yes. For EV novated leases, the calculator estimates the effect of the reportable fringe benefit amount (RFBA) on adjusted taxable income, which can affect HECS repayments, childcare subsidy, and Division 293 tax.

Is this calculator affiliated with any novated lease provider?

No. This tool is independent and is not affiliated with any novated lease company, financier, or employer salary‑packaging provider. While I have gotten to know some industry insiders through my online participation, I do not receive referral fees or kickbacks from any provider.

What are the limitations of this calculator?

Like all financial models, this calculator is a simulation based on explicit assumptions. Key limitations include:

• Primary endpoint is financial position at 5 years. The model assumes that, under a novated lease, the residual value is paid out at the end of the lease.
• Home loan interest rate is assumed to be constant throughout the lease duration.
• Offset account impact is calculated on a fortnightly basis. In reality, home loan interest is typically calculated daily and charged monthly.
• Insurance premiums, registration, and maintenance costs are assumed to remain constant over the lease term.
• Residual value methodologies vary between leasing companies.
• Market value depreciation is interpolated for 1–4 year lease terms.

These limitations do not invalidate the calculator, but they do highlight why the outputs should be interpreted as decision support, not precise predictions.

Who is this calculator less suitable for?

While this calculator is designed to cover the most common novated lease scenarios faced by Australian employees, it may be less suitable or require extra interpretation for the following groups:

• Very low‑income earners. At lower income levels, the interaction between income tax, Medicare levy (including partial reductions), and means‑tested benefits can be more complex and less reliably captured by a generalised model.
• People who frequently roll over novated leases. This calculator models a single lease cycle and assumes the residual value is paid out at the end of the lease. If you routinely roll residuals into subsequent leases, your long‑term outcomes may differ materially from those shown here.
• People who could otherwise claim work‑related vehicle use outside a novated lease. If you are able to claim deductions for work use of a vehicle under a cash‑purchase or car‑loan pathway (for example via logbook or cents‑per‑kilometre methods), those alternatives may warrant separate modelling and comparison.
• People considering associate leases. Associate leases have distinct financial consequences that are not modelled here, and outcomes can differ significantly from standard novated leasing arrangements (and may be more advantageous for certain personal circumstances).
• Company directors or business owners with access to alternative structures. If you operate through your own company or trust and may be eligible for FBT‑exempt vehicle benefits or other business‑specific arrangements, this calculator may not fully capture the options available to you.

In these situations, the calculator can still provide useful context, but the results should be interpreted with additional caution and, where appropriate, supplemented with tailored advice.