Public vs Private Surgery Calculator
Compare the financial cost of waiting for public elective surgery vs paying for private. Factors in productivity loss and 5-year health insurance premiums.
About this calculator
This calculator implements NZ elective surgery wait times + private cost estimates from Te Whatu Ora + Policywise. Last consulted 18 May 2026. Verify the figures yourself by following the link.
NZ elective surgery costs & wait times
Te Whatu Ora Jan 2025 + Policywise 2026- •Hip replacement private: ~$28,000
- •Knee replacement private: ~$26,500
- •Cataract (one eye) private: ~$4,800
- •Public wait >4 months (Jan 2025): 37,000+ patients
- •Typical hip wait public: 6-18 months
- •Health insurance premium (45yo couple): ~$300-450/mo
Source: Te Whatu Ora — Wait times
Disclaimer
This calculator provides estimates for general information purposes only. Results are based on standard formulas and may not reflect your individual circumstances. Always consult a qualified professional for advice specific to your situation.
How public vs private surgery cost compares
Net financial cost = (private upfront cost) vs (productivity loss during public wait + insurance premiums).
- 1
Private upfront cost
Private = procedure_cost (hip ~$28k, knee ~$26k, cataract ~$4.8k)
Out-of-pocket or via health insurance.
- 2
Public wait cost
Public_cost = monthly_income × productivity_loss_% × wait_months
Lost productivity (e.g. 30%) for the wait period.
- 3
Insurance premium cost
Insurance = monthly_premium × 60 (5-year amortised)
Compare 5-year premium total to one-off private cost.
- 4
Decision rule
Go_private if public_cost > private_cost
Plus quality-of-life considerations (not in formula).
Worked example
Inputs: Hip private $28k, public wait 12mo, $6k/mo income, 30% productivity loss
Result: Public cost = $6,000 × 30% × 12 = $21,600. Private = $28,000. Public ($21.6k) < Private ($28k) — wait it out.
Frequently Asked Questions
How long are NZ public elective surgery waits?
When is health insurance worth it in NZ?
Which conditions are NOT covered by NZ public health?
Are pre-existing conditions ever covered by NZ health insurance?
The public vs private surgery calculator compares the financial cost of waiting for public elective surgery in NZ against paying for the same procedure privately, factoring in lost productivity during the wait and the cost of health insurance premiums.
How this calculator works
More than 37,000 New Zealanders were waiting over four months for elective surgery at the start of 2025, and a hip or knee replacement can mean 6-18 months on a public list. Waiting is free at the point of care but rarely free in practice: pain limits how much you can work, so the calculator estimates your economic cost of waiting as monthly income × productivity loss % × months on the list. It compares that against the private route — a hip replacement around $28,000, knee $26,500, cataract $4,800 — or the 5-year cost of health insurance premiums that would have covered it. The decision rule is simple: when the cost of waiting exceeds the private price, paying (or insuring in advance) is financially rational, before even counting pain and quality of life. The output is a planning aid, not medical advice — surgical priority is always a clinical decision.
NZ elective surgery costs and waits
| Hip replacement (private) | ~$28,000 |
| Knee replacement (private) | ~$26,500 |
| Cataract, one eye (private) | ~$4,800 |
| Patients waiting >4 months (Jan 2025) | 37,000+ |
| Typical public wait — hip | 6 - 18 months |
| Health insurance (couple, mid-40s) | ~$300 - $450/month |
Costs are indicative private-hospital package prices; Te Whatu Ora publishes wait-time data.
Worked Examples
Hip replacement: private $28,000, public wait 12 months, income $6,000/month, 30% productivity loss
Cost of waiting ≈ $21,600 < private $28,000 — financially, waiting wins (before quality-of-life).
- Waiting cost: $6,000 × 30% × 12 = $21,600
- Private cost: $28,000
- $21,600 < $28,000 → the public wait costs less in pure dollars
- A longer wait or higher income flips the answer
Cataract: private $4,800, public wait 8 months, income $5,000/month, 20% productivity loss
Cost of waiting ≈ $8,000 > private $4,800 — going private saves ≈ $3,200.
- Waiting cost: $5,000 × 20% × 8 = $8,000
- Private cost: $4,800
- $8,000 > $4,800 → private surgery is financially rational here
Built and maintained by Konstantin Iakovlev. Data sourced from the IRD and official New Zealand government sources.
Last reviewed: