Return on Investment (ROI)
Total ROI and annualised ROI for any investment.
NZ$
NZ$
Profit, not the final balance
years
ROI
25.00%
Annualised: 7.72%
| Initial investment | $10,000.00 |
|---|---|
| Total gain | $2,500.00 |
| Total ROI | 25.00% |
| Annualised ROI | 7.72% |
About this calculator
Total ROI ignores time. Annualised ROI normalises gains across years for fair comparison.
- ROI = gain ÷ cost × 100.
- Annualised ROI = ((1 + gain/cost)^(1/years) − 1) × 100.
Formula:
ROI = (Gain ÷ Cost) × 100Frequently asked questions
Should I deduct tax?
Use after-tax gain for a like-for-like comparison with an after-tax savings rate.
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Calculator NZ provides general information only. For decisions with significant financial, medical or legal consequence please consult a qualified professional.