Legal Advice

Late Payment Interest in NSW CTP Claims: How SIRA Applies the Rules

This article explains how SIRA determines late payment interest for NSW CTP claims, including when interest applies, how to request it, and practical steps for claimants in Ballina. General information cannot determine individual claims.

Current as at 16 August 2026

When Does SIRA Apply Late Payment Interest to CTP Claims?

In New South Wales, the Motor Accident Injuries Act 2017 and SIRA guidelines determine when late payment interest applies to Compulsory Third Party (CTP) claims. If an insurer delays statutory benefits like weekly payments or treatment and care benefits, SIRA’s rules specify how interest is calculated. This applies to all claims, including those in Ballina and regional NSW.

How SIRA Determines Late Payment Interest

SIRA explains that late payment interest is triggered when an insurer fails to pay statutory benefits within the required timeframe. Under the Motor Accident Injuries Act 2017, insurers must pay weekly benefits and treatment and care benefits within 14 days of a claim being approved. If they pay later, interest accrues at the default interest rate set by the NSW Civil and Administrative Tribunal (NCAT), currently 5.5% per annum.

The key factors SIRA considers are:

  • When the benefit was due (based on claim approval dates)
  • When the payment was made (must be documented in insurer correspondence)
  • Whether the delay was intentional or unavoidable (SIRA considers good faith in determining interest rates)

Practical Steps for Claimants in Ballina and Regional NSW

To request late payment interest, claimants should:

  1. Document all communication with the insurer, including dates of claim approval and payment.
  2. Request a written confirmation of payment dates from the insurer.
  3. Submit a formal claim for interest using the SIRA claim form (available on SIRA’s website).
  4. Keep records of all correspondence with the insurer, including emails, letters, and phone records.

Time Limits and Dispute Options

Claimants have five years from the date of the accident to pursue unpaid benefits, including interest. However, interest calculations depend on the exact date of payment, which may require mediation through SIRA or the NSW Civil and Administrative Tribunal (NCAT). If an insurer disputes the interest claim, claimants should:

  • Request a written explanation of the insurer’s position.
  • Seek independent legal advice if the dispute exceeds the scope of SIRA’s mediation.

Example: How Interest Applies in a Ballina Claim

Consider a claimant in Ballina who suffered a soft-tissue injury in 2023. The insurer approved the claim in June 2023 but paid the first weekly benefit in August 2023. Under SIRA’s rules, interest would accrue from June 2023 (the approval date) until August 2023 (the payment date). The claimant would then be owed interest for the two-month delay.

When to Seek Legal Advice

While SIRA provides clear guidelines, interpreting them can be complex. Claimants should consult a solicitor if:

  • The insurer disputes the interest claim.
  • The claimant is unsure whether the payment delay qualifies for interest.
  • The claim involves threshold injuries or whole person impairment calculations.

Next Steps

CTP entitlements depend on the date of the accident, injury type, and payment timelines. To ensure you understand your rights, complete the quick, no obligation enquiry form to request contact about your circumstances.

Prepared using automated research and drafting tools and checked through LegalAdvice editorial and source-validation controls. This page is general information, not personalised legal advice.

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