Definition:Net investment income
| Net investment income | |
|---|---|
| Category | kpis; pnl |
| Aliases | net investment result; investment result |
| Metric id | net_investment_income |
| Unit | currency |
| Related terms | Assets under management, Insurance service result, Total revenue |
| Definition | Net investment result recognised in P&L: investment income net of investment expenses. |
💵 Net investment income is the contribution an insurer's investment portfolio makes to the income statement: interest, dividends, rental and other income from invested assets, less the expenses of managing them. Depending on the framework, the line also nets in impairments and realized gains or losses. Insurers hold large general-account portfolios because premiums arrive before claims are paid, and net investment income measures what that float earns. The float works like an interest-free loan from policyholders, until reserves develop adversely and the loan reprices. Many groups label the same economics net investment result, particularly where they present gains and losses together with income.
⏳ The size of the asset base and the book yield locked into it drive the level, which makes the line slow-moving by nature: portfolios reprice gradually as maturing bonds are reinvested at current rates. Presentation differs meaningfully across frameworks. IFRS 9 classification determines whether value changes flow through profit or loss. US GAAP separates net investment income from realized gains. Under IFRS 17, the investment side of the income statement also carries insurance finance income or expense, the unwinding and remeasurement of insurance liabilities; the spread earned over what the insurer credits to policyholders is what ultimately matters. The line is expressed in currency and disclosed by segment and asset class.
📈 Investment earnings are the second engine of insurer profitability alongside the underwriting result, and for life insurers with spread-based business they are frequently the dominant one. The line is the main channel through which the interest-rate cycle reaches insurer earnings: the low-rate decade compressed it steadily, and the rate resets of recent years rebuilt it just as gradually. That inertia is why analysts watch reinvestment yields and asset-mix shifts as leading indicators of where the line is heading, well before the income statement shows it.