GST Calculator

Corrections Policy

How MoneyToolkit handles possible errors, outdated sources, and unclear results.

Last updated: 4 August 2026

Corrections & updates log

A public record of substantive changes to this site's calculators and content. Corrections fix something we got wrong; updates track routine maintenance such as annual rate changes. Minor copy edits are not logged.

This public log was established on 4 Aug 2026. Earlier entries were reconstructed from our dated version history.

  1. correction

    Fuel tax credit periods and historical LCT threshold corrected

    We previously grouped fuel tax credit rates into calendar quarters, even though ATO rates change on specific effective dates. We replaced those periods with the applicable date ranges and corrected the fuel categories and on-road rates. We also corrected the 2025–26 fuel-efficient luxury car tax threshold from $89,332 to $91,387.

    Affected: Fuel Tax Credit Calculator, Luxury Car Tax Calculator

  2. update

    2026–27 indirect-tax thresholds and rates added

    Added the 2026–27 luxury car tax thresholds and car limit, along with the fuel tax credit periods applying from April and July 2026. The GST and wine equalisation tax headline rates were reviewed and remained unchanged.

    Affected: GST Calculator, Fuel Tax Credit Calculator, Luxury Car Tax Calculator

Report a possible error

Email [email protected] with the page URL and a short description of what appears incorrect. For calculator issues, include the inputs needed to reproduce the result, but do not send tax file numbers, ABN credentials, invoices containing customer details, bank information, or complete BAS records.

A link to an official source, legislation, regulator guidance, or other supporting evidence helps us investigate more quickly.

What happens next

  1. 1

    Reproduce and verify

    We check the page, calculation path, cited source, and relevant assumptions.

  2. 2

    Assess materiality

    We distinguish a factual or calculation error from a reasonable difference in assumptions or circumstances.

  3. 3

    Correct the source and explanation

    If a material error is confirmed, we update the calculation or text and review related pages that may rely on the same information.

  4. 4

    Record meaningful changes

    We update the page review date when the correction materially changes a result, threshold, benchmark, or conclusion.

A different estimate is not necessarily an error

Actual GST treatment can depend on registration, tax periods, invoice validity, supply classification, apportionment, special rules, and transaction facts the calculator cannot know. Verify material amounts in your records or with a registered tax or BAS agent.

Privacy when reporting

Send only the minimum information needed to reproduce the issue. We do not need identity documents, account numbers, tax file numbers, addresses, or complete financial records. See the privacy policy for more information.