Present value and future contingencies
How are future economic losses discounted in a NSW CTP damages claim?
First establish the likely future loss, then apply statutory adjustments and present-value discounting
Future economic loss is not calculated by multiplying a weekly shortfall by every remaining work week. Section 4.7 requires assumptions that match the claimant's most likely future circumstances without the injury and a percentage adjustment for the possibility that those events might not occur. Section 4.9 then requires a lump-sum future loss to be converted to present value using the percentage prescribed by the Regulation, or 5% if no percentage is prescribed. The calculation should disclose its assumptions, contingency adjustment, period and discount method.
Discounting recognises that a lump sum is received now for loss expected in future years. It is different from the contingency adjustment, which accounts for uncertainty such as illness, unemployment, recovery, career change or other life events.
A claimant should be able to trace the calculation from medical capacity and probable work to the weekly or annual loss, duration, contingencies and present value. A headline total without those stages cannot be meaningfully checked.
Reviewed by Herman Chan, Stephen Young Lawyers
Section 4.7 assumptions come before discounting
The court or claims assessor must be satisfied that the assumed without-injury earning capacity or other event reflects the claimant's most likely future circumstances. Evidence may include age, employment history, qualifications, career plans, health, industry, medical prognosis, rehabilitation and residual capacity.
The projected loss must then be adjusted for the percentage possibility that the assumed events might not have occurred. This can address ordinary life and employment risks as well as case-specific uncertainty. The award must state the assumptions and relevant percentage adjustment.
Do not use a discount rate to hide an unsupported assumption. Whether the claimant would have remained in a role, been promoted, recovered capacity or worked to a particular age is addressed with evidence and contingencies before mathematical present-value discounting.
What the section 4.9 discount does
Section 4.9 applies when a lump-sum award includes future economic loss referable to impaired earning capacity or loss of expected financial support. It requires the present value to be qualified using the prescribed discount rate. The Act sets 5% if no percentage is prescribed by the Regulation.
A discount table or actuarial calculation converts payments due over time into one current sum. The result varies with the amount, payment interval and duration. Applying 5% as a simple one-off deduction from the total is not the statutory present-value method.
The rate and calculation should be checked against the current Regulation on the assessment date. This page explains the structure but does not provide a damages calculator because medical, vocational and legal assumptions require individual assessment.
How to review an insurer future-loss calculation
Ask for the underlying weekly or annual loss, start and end dates, wage growth assumptions, residual earnings, contingencies, discount rate, superannuation treatment and any statutory reduction. A single net figure prevents proper review.
Compare each assumption with the evidence. A long loss period may require vocational or actuarial assistance. A short or modest period may be capable of transparent manual scheduling, but the same statutory structure still applies.
Run alternative supported scenarios where uncertainty is genuine, such as gradual recovery, delayed promotion or part-time work. The purpose is not to choose the largest model; it is to show the range created by evidence-based assumptions.
Practical next steps
Check a future-loss calculation
Separate evidence, contingencies and present-value mathematics.
Define the counterfactual
State the most likely work and earnings without the accident.
Define residual capacity
Use current medical, vocational and actual post-accident work evidence.
Set the loss period
Explain the start, expected duration and any staged recovery or career change.
Apply contingencies
State the percentage and reasons under section 4.7.
Discount to present value
Use the current section 4.9 rate and proper present-value method.
Evidence
Future-loss calculation checklist
Every number should connect to an assumption and source.
- Medical prognosis and functional work capacity.
- Vocational evidence and suitable employment analysis.
- Pre- and post-accident earnings records.
- Career, promotion or retirement assumptions.
- The weekly or annual future-loss schedule.
- Contingency percentage and stated reasons.
- Current prescribed discount-rate source.
- Present-value table, actuarial calculation or transparent method.
Common future-loss calculation errors
- Do not multiply one weekly figure by every future week.
- Do not confuse contingencies with the discount rate.
- Do not apply 5% as a simple deduction from the headline total.
- Do not assume work to a fixed age without evidence.
- Do not use a rate without checking the current Regulation.
Timing
Use current evidence and the rate applying at assessment
Future-loss assumptions can change as recovery and work develop.
- Update medical and employment assumptions before settlement or assessment.
- Check the current Regulation rather than relying on an old calculation template.
- Recalculate where the loss period or residual earning capacity changes materially.
- The calculation work does not extend the separate damages claim or review periods.
Frequently asked questions
- Is the future-loss discount always 5%?
- Section 4.9 uses a percentage prescribed by the Regulation, or 5% if none is prescribed. The current position must be checked at assessment.
- Is a 5% discount just 5% off the total?
- No. It is a present-value method applied across future payments, not a simple one-off deduction.
- What is a contingency deduction?
- It is the section 4.7 adjustment for the possibility that assumed future events might not occur. It is separate from present-value discounting.
- Can wage growth be included?
- Only through a supported assumption and consistent calculation. It should not be added automatically or inconsistently with the discount model.
- Does WPI set the amount of future loss?
- No. WPI and earning capacity are different. Future economic loss depends on evidence of probable earning-capacity consequences.
- Why are different scenarios sometimes used?
- They show the effect of genuine evidentiary uncertainty, such as recovery, delayed career progress or part-time capacity.
Related NSW CTP damages guides
Official sources
- Motor Accident Injuries Act 2017 (NSW), current in-force version
- Motor Accident Injuries Regulation 2017 (NSW), current in-force version
- SIRA: lump-sum compensation (common law damages)
This page uses the current Motor Accident Injuries Act 2017, Motor Accident Injuries Regulation 2017, Motor Accident Guidelines version 10.1 and the other official sources listed below. Damages and statutory benefits are separate parts of the NSW CTP scheme, and the result depends on the accident date, fault, injury, evidence and procedural history.
Future-loss calculation review
Does the insurer's future-loss figure omit its assumptions?
Send the calculation, medical and vocational evidence, earnings records and insurer reasons. We can identify unsupported assumptions, contingencies and discounting issues.
General information only: This page provides general NSW CTP information, not legal, financial, tax, accounting or estate advice. It does not establish eligibility, calculate a settlement, create or extend a time limit, or guarantee that an insurer, the Personal Injury Commission or a court will accept a claim or item of loss.