Term Life Insurance: How Much Cover Do You Actually Need?
Start with why you're buying it
Life insurance exists to replace your financial contribution if you're gone. So the real question is: who depends on your income, and what would they need?
Common reasons people buy term life:
- A partner or spouse who relies on your income
- Children who'll need support for years
- A mortgage or other debts that would fall on someone else
- Parents or family members you financially support
If nobody depends on your income, you may not need life insurance at all right now. That's a perfectly fine answer.
The quick rule of thumb: 10–12x your income
A widely used starting point is cover worth 10 to 12 times your annual income. Earn $60,000? That's $600,000–$720,000 of cover.
It's rough, but it's a solid baseline — and for many people it's close enough. If you want a number tailored to your actual life, though, the DIME method is better.
The DIME method: a number built for your life
DIME stands for Debt, Income, Mortgage, Education:
- D — Debt: Add up everything you owe except the mortgage — credit cards, car loans, personal loans. Your cover should be enough to clear these.
- I — Income: Multiply your annual income by the number of years your family would need support. Ten years is a common choice; with young children, some people use 15 or even 20.
- M — Mortgage: Add the remaining balance on your mortgage, so your family can stay in the home.
- E — Education: Add estimated future education costs for your children, if that's a priority for you.
Total = D + I + M + E. Then subtract any savings, investments, or existing life cover you already have — that's money your family wouldn't need to replace.
Here's a worked example: $20,000 in debts + ($60,000 × 10 years) + $200,000 mortgage + $100,000 education = $920,000, minus $120,000 in savings = $800,000 of cover.
How long should the term be?
Match the term to your longest obligation:
- 20–30 years is the most common choice — it covers the years your kids grow up and the bulk of a mortgage.
- Buying in your 30s with young children? A 25- or 30-year term usually fits.
- Only need to cover a 15-year mortgage? A 15-year term costs less.
Longer terms cost more, but buying young locks in lower rates. Revisit your cover after big life events — marriage, kids, a new house, a big raise.
What affects the price?
Insurers price risk, so these factors matter:
- Age and health — younger and healthier is cheaper, by a lot.
- Smoking — smokers often pay two to three times more than non-smokers.
- Hobbies and occupation — adventurous hobbies or hazardous jobs show up in the price.
- Term length and cover amount — longer and larger costs more.
This is why buying earlier is usually cheaper than waiting until you "really" need it.
A note for the UK
The same maths works in the UK. "Term assurance" is the local name, and many people buy decreasing term cover specifically to match a repayment mortgage — the payout shrinks as the mortgage balance falls, which keeps premiums lower. Family income benefit policies, which pay a monthly income instead of a lump sum, are another common UK option worth knowing about.
The bottom line
Don't guess, and don't just accept whatever number a quote suggests. Run the DIME calculation — it takes ten minutes and gives you a figure grounded in your actual life. Then choose a term that matches your longest commitment, and review it whenever life changes. The best life insurance policy is the one your family will never have to think twice about.
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