Can a service provider increase the quoted price later in Australia?

Answer

No, a service provider generally cannot increase the price after you have accepted a firm quote in Australia. Under the Australian Consumer Law (ACL), a quote is a legally binding agreement. However, if the document was merely an estimate, the final price can legally vary.

Australian Competition and Consumer Commission (ACCC)
Last UpdatedMay 3, 2026

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How it works in practice

The Difference Between Quotes and Estimates

Under the Australian Consumer Law (ACL), it is crucial to understand the difference between a quote and an estimate. A quote is a firm offer to provide a service for a specific price. Once you accept a quote, it forms a legally binding contract.

Binding Nature of Quotes

Because a quote is legally binding, a service provider cannot simply change their mind and charge you more after the work begins. They must honor the agreed-upon price. If they attempt to charge more without a valid contractual reason, they are likely engaging in misleading or deceptive conduct, which is prohibited under the ACL.

When Estimates Apply

An estimate, on the other hand, is just an educated guess about what a job might cost. If a provider gives you an estimate rather than a firm quote, the final price can legally vary depending on the actual labor and materials required.

Your Consumer Rights

If a business attempts to unilaterally increase a firm quote, you have the right to refuse the extra charge and insist they complete the work for the agreed price. Always ensure you have the quote in writing to protect your consumer rights effectively.

Important exceptions

There are specific situations where a provider might legally increase the price. If you request additional work or changes to the scope of the original project, the provider can charge for the extra labor and materials.

Additionally, some quotes include specific terms and conditions or "variations clauses" that allow for price increases if unforeseen problems arise, such as discovering hidden structural damage during a renovation.

Finally, if the provider explicitly stated that the price was subject to fluctuations in material costs and you agreed to those terms, an increase may be valid.

What you should do now

  1. Review the original document to confirm whether it was a firm quote or just a preliminary estimate.

  2. Check the terms and conditions of the quote for any clauses regarding variations or unforeseen material costs.

  3. Refuse the additional charge in writing if you hold a firm quote and did not request any changes to the scope of work.

  4. Request a detailed, itemized breakdown from the provider explaining exactly why the price has increased.

  5. Lodge a formal complaint with your state's fair trading agency or the ACCC if the provider refuses to honor the agreed quote.

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