Novated Lease Calculator (Australia)

Yes. The calculator applies the wind-back rules as set out in the September 2026 exposure draft legislation, which is not yet law. It works out the FBT treatment from the lease start date, which it treats as the date you commit to the lease, and the 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 get a 100% FBT discount (no FBT); vehicles above $75,000 but at or below the LCT threshold attract 75% of full FBT (a 25% discount) and a reduced reportable fringe benefits amount; 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. For a used EV on a lease starting from 1 April 2027, the draft drops the 1 July 2022 and LCT-history tests, and the calculator stops asking for them.

Yes. The calculator covers the financial comparison, but a lease also depends on things it can't see in your quote: whether the add-ons and insurance are ones you want, how payroll calculates your super, HELP and other income tests, and your exit plan. The checklist puts all of these in one list you can tick off and save as a PDF.

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.

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.

No. This is a known limitation and one I have chosen not to change, for three reasons:

• Cost. AI-assisted PDF parsing, which is what some other sites offer, consumes paid tokens on every quote, and free tiers only stretch so far. With close to 1,000 distinct visitors a day, more than half of whom actively use the calculator, it is not financially feasible on a largely free website funded by modest donations.
• Accuracy. AI parsing still makes mistakes. In my testing of those other sites it usually handles simple quotes well, but often stumbles on the confusing layouts a few lease providers use and produces wrong figures. I don't want people gaining false confidence from output that looks authoritative but may be wrong. If you're unsure, I'd rather you post in an online forum so a real person can go through your numbers. I chip in from time to time too, especially on questions about this website and the calculator.
• Understanding. Working through the figures yourself builds a mental picture of what you are signing up for. For example, it's worth understanding the difference between the finance component and the running cost component, and how pre-tax figures translate to post-tax. For such a large financial commitment and such a complex structure, I strongly encourage you to understand it yourself rather than hand it off to a fallible machine.

To help with the fields, most inputs have an info tooltip or a hint underneath, and the guided tour (start it from the calculator) walks through Advanced mode step by step. The calculator guide explains each field, and how to read a novated lease quote shows where the figures sit in a typical quote. If you still want AI help, you can point ChatGPT, Claude or a similar assistant at this page, attach your own quote and ask how to enter the figures. All the caveats above still apply.

Yes. In the Advanced inputs, set the vehicle condition to used, dealer sale or used, private sale. A dealer sale still attracts the GST saving on the purchase price, while a private sale has no GST in the price and therefore no GST credit, which changes the financed amount. For a used EV on a lease starting before 1 April 2027, the FBT exemption applies only if the car was first held and used on or after 1 July 2022 and Luxury Car Tax was never payable on it; the calculator asks you to confirm both. Under the September 2026 exposure draft, those two tests no longer apply to leases starting from 1 April 2027. See used EV on a novated lease instead of buying new? for the full comparison, and how the used-car GST saving works for the GST detail.

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.

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.

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.

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 — in simulation testing, this divergence introduces a discrepancy of well under 0.1%.
• 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.

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.