Calculator
Example data table
| Scenario | Income | Years | Debts | Coverage |
|---|---|---|---|---|
| Typical | $60,000 | 15 | $90,000 | $420,000 |
| Higher costs | $80,000 | 18 | $140,000 | $720,000 |
| More assets | $70,000 | 15 | $90,000 | $350,000 |
Examples are illustrative and use rounded values.
Formula used
The calculator estimates a coverage gap by comparing the present value of obligations to available resources.
- TargetIncome = AnnualIncome × (Replacement% ÷ 100)
- NetIncomeNeed = max(0, TargetIncome − SurvivorIncome)
- RealRate = (1+Return) / (1+Inflation) − 1
- PV(Annuity) = PMT × (1 − (1+RealRate)^(-n)) / RealRate
- Obligations = PV(Income) + PV(Childcare) + Debts + Final + Education + Emergency
- Resources = ExistingCoverage + Savings + Other + PV(Benefits)
- Gap = max(0, Obligations − Resources)
- Recommended = Gap × (1 + Buffer% ÷ 100)
RealRate adjusts the return assumption for inflation so future costs and income are compared in today’s purchasing power.
How to use this calculator
- Enter your income and how much to replace.
- Set support years based on dependent timelines.
- Add debts, final expenses, childcare, and education goals.
- Include existing coverage and available assets.
- Open advanced options for inflation, returns, and buffer.
- Submit to see results, then export CSV or PDF.
For planning, try three runs: conservative, baseline, and optimistic assumptions.
Income Replacement Benchmarking
A common planning range is replacing 60%–80% of gross income. For an income of 60,000 and a 70% target, the annual goal is 42,000. If survivor income is 12,000, the net need becomes 30,000 per year. Over 15 years, the present value of that stream is discounted to today’s money using the real rate. Many planners also model 5%–10% for taxes and benefits changes after retirement.
Dependent Support Horizon
Support years should reflect the youngest dependent’s timeline. Many households model 10–20 years, then reassess as children age. If you extend support from 15 to 20 years, the income replacement present value rises materially, because five additional payments are added to the annuity. Pair this with childcare duration so short‑term costs do not get blended into long‑term income. Consider a step‑down approach: higher support early, lower support once college begins.
One‑Time Obligations and Liquidity
Large, immediate needs are treated as lump sums: debt payoff, final expenses, education funding, and an emergency reserve. A six‑month emergency buffer on a 2,500 monthly spend equals 15,000. Education goals often sit between 10,000 and 30,000 per dependent, depending on tuition expectations and location. Debts should be entered as the payoff amount, not the monthly payment. Keeping these amounts separate avoids understating near‑term cash needs at settlement.
Inflation‑Adjusted Discounting
The calculator converts nominal return and inflation into a real discount rate: (1+return)/(1+inflation)−1. With 6% return and 3% inflation, the real rate is about 2.91%. A higher real rate reduces present values; a lower real rate increases them. If returns are uncertain, conservative inputs typically produce a larger coverage recommendation. Run 2% and 1% real rate cases for sensitivity.
Interpreting the Coverage Gap
Total obligations are compared against resources such as existing coverage, savings, and projected benefit streams. The gap is the shortfall that new insurance could cover. Adding a 10% buffer helps absorb cost growth and timeline risk. If the gap is near zero, focus on policy structure, beneficiaries, and updating assumptions annually.
FAQs
1) What does the recommended coverage number represent?
It is the estimated shortfall between obligations and resources, plus your selected buffer. It’s a planning target for additional coverage, not a quote or guarantee.
2) Why does the calculator use a real discount rate?
Real rates compare future cash flows in today’s purchasing power. The tool blends inflation and return assumptions so long-term income support and future costs are discounted consistently.
3) How should I choose an income replacement percentage?
Many households start in the 60%–80% range and adjust for fixed expenses, dependent needs, and expected survivor income. If benefits or a second income are reliable, you may need less.
4) Should education funding be entered as a lump sum?
Yes. Enter an estimated total per dependent that reflects tuition, fees, and living costs. If you expect staged funding, run separate scenarios to see how the target changes.
5) How are benefits like pensions or social support handled?
Benefits can be modeled as an annual stream over a set number of years. The calculator converts that stream to a present value and adds it to resources, reducing the coverage gap.
6) How often should I update the inputs?
Review at least annually, and after major changes such as a new child, a mortgage, job change, or tuition updates. Small assumption shifts can materially affect the recommended coverage.