Life Insurance Rule of Thumb Calculator (2026)
Most planners use a 10x to 20x annual income rule of thumb for life insurance. This 2026 tool compares the rule of thumb to a debt+income replacement check so you don't under-buy.
| Annual income | — |
| Multiplier | — |
| Rule-of-thumb coverage | — |
| Plus debts | — |
| Less existing coverage + liquid assets | — |
| Net new coverage need | — |
The 10x to 20x annual income rule of thumb is the fastest way to estimate life insurance coverage. Single-earner households with young children typically need 15-20x annual income; dual-earner couples without kids often need only 5-10x. This 2026 calculator runs the rule-of-thumb number, then nets out existing coverage, liquid savings, and debts so you see the realistic gap.
Why 10x-20x Income
The multiplier comes from income replacement math. If a survivor invests the death benefit at a real return of about 3-4% per year after inflation, 10x annual income funds roughly 12-15 years of full income replacement; 20x funds 25-30 years. NAIC and III both publish the 10x-20x range as the standard rule of thumb. The right multiplier depends on number of dependents, years until kids are self-sufficient, and whether a surviving spouse can return to work.
Why The Rule Alone Under-Buys
The rule ignores three big buckets. (1) Outstanding mortgage and debt — typically $200,000-$400,000 in 2026 for US households. (2) College costs — $120,000-$200,000 per child at a public 4-year university in 2026 dollars. (3) Final expenses — funeral and probate average $9,000-$15,000. Always add these to the rule-of-thumb number, then subtract existing group life from work, IRA balances accessible to a surviving spouse, and 6-12 months of liquid savings. Term life (20- or 30-year level term) is almost always the right product for income replacement; whole life costs 5-15x more for the same death benefit and rarely beats term + invest the difference.
Last updated May 2026. Sources: NAIC Life Insurance Buyer Guide, Insurance Information Institute.