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CTP Insurance Late Payment Interest: How SIRA Handles Regional NSW Claims

SIRA calculates interest for delayed CTP payments in NSW using the NSW Treasury rate. Claimants in regional areas can request interest calculations directly from SIRA. If your insurer disputes the calculation, you may need to seek legal advice to protect your entitlements.

Current as at 15 October 2026

How SIRA Calculates Interest for Delayed CTP Payments in Regional NSW

If your CTP insurer pays your statutory benefits late, you may be entitled to interest under NSW law. SIRA, which administers the Motor Accident Injuries Act 2017 (MAIA), explains how interest is calculated for delayed payments, including in regional areas. This guide explains the rules, how to claim interest, and what to do if your insurer delays payments.

Legal Framework for Late Payment Interest

Under the MAIA, insurers must pay statutory benefits promptly. If a payment is delayed, interest accrues at the rate set by the NSW Treasury. SIRA’s guidelines state that interest is calculated from the date the payment was due until the date it is made. This applies to all CTP claims, including those in regional NSW, regardless of the insurer’s location.

The exact interest rate depends on the type of payment. For example, weekly income payments accrue interest at the same rate as the Commonwealth’s prescribed rate, while lump sum payments use the rate applicable to the relevant financial year. SIRA’s website provides a calculator tool to estimate interest for specific cases.

Practical Steps to Claim Interest

To claim interest, you must first confirm the payment was delayed. This involves:

  • Checking the payment schedule in your CTP claim agreement
  • Comparing the payment date with the due date in the MAIA
  • Documenting the delay with your insurer’s correspondence

Once you’ve established a delay, contact SIRA directly to request an interest calculation. Regional offices may have additional resources to assist with claims, including access to legal advisors for dispute resolution.

Time Limits and Dispute Options

You have 12 months from the date of the payment to claim interest under the MAIA. If your insurer disputes the interest calculation, you can:

  • Request a review from SIRA’s internal appeals process
  • Seek mediation through the NSW Civil and Administrative Tribunal (NCAT)
  • Consult a solicitor for legal advice

When to Seek Legal Advice

If your insurer refuses to pay interest or disputes the calculation, it’s important to act quickly. SIRA’s regional offices can provide guidance, but complex disputes may require a solicitor. Legal advice is particularly valuable if your claim involves multiple delayed payments or disputes over the interest rate.

Example: Claiming Interest for a Delayed Weekly Payment

Consider a claimant who receives a weekly income payment 45 days late. Under SIRA’s rules, interest would accrue at the current Treasury rate (e.g., 5.25%) for 45 days. The total interest would be added to the payment, increasing the amount received. This applies regardless of whether the claim was made in Sydney or a regional area like Newcastle.

Next Steps

CTP interest calculations depend on the payment date, the type of benefit, and the insurer’s compliance with the MAIA. If you’re in regional NSW and your insurer has delayed payments, contact SIRA directly to claim interest. For complex disputes, legal advice can help ensure your rights are protected.

Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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