Insurance Coverage Gap Calculator
This insurance coverage gap calculator works out the gap between the life insurance cover you need and the cover you already have, with a chart.

What it does
The Insurance Coverage Gap Calculator compares the total protection your household needs against the cover you already have in place, so you can see any shortfall at a glance. It adds your existing policies to your liquid assets and measures the difference from the target.
Data sources & parameters
This calculator uses standard financial formulas and runs entirely in your browser. It needs no external rate data — your result is computed only from the values you enter above.
We always strive to use the latest data for every variable so our results and reports are as accurate as possible. Even so, errors are possible — you should not rely on this tool or its report alone, and we accept no liability for any decision made based on it.
The formula
coverage_gap = max(0, coverage_needed − (existing_coverage + liquid_assets)); coverage_ratio = resources ÷ coverage_needed × 100
How it works
You enter the total coverage your family would need, the sum insured across your current policies, and the liquid savings that could stand in for insurance. The tool adds cover and assets into total resources, subtracts them from the need, and reports the remaining gap plus the share of the need already met.
Where it is used
- Checking whether your life cover keeps pace with a growing mortgage or family
- Deciding how much extra term insurance to buy
- Reviewing cover after a major life change such as a new child or home
Worked example
A household needs $1,000,000.00 of protection, holds $400,000.00 of cover and $100,000.00 in savings. Total resources come to …, leaving a coverage gap of … and a coverage ratio of ….
What the insurance coverage gap calculator does
The calculator compares the protection your household needs with the resources you already have, existing insurance policies plus liquid savings, and shows the shortfall. That coverage gap is the figure to look at when deciding whether to buy more life insurance.
People often buy a policy at one stage of life and keep it for years while the mortgage grows, children arrive and salaries rise, so cover that once looked generous falls behind.
How the calculation works
Enter the total coverage needed (the protection your family would need if you were no longer earning), your existing insurance cover (the combined sum insured across your policies) and your liquid assets (savings and investments that could realistically be used in place of insurance). The tool adds your cover and liquid assets to get total resources and subtracts that from the coverage needed. A positive result is your gap; if it is zero or negative, the gap is reported as zero. The coverage ratio is total resources divided by coverage needed, times one hundred.
The calculation uses only your numbers, so it works the same in any currency.
Estimating the coverage you need
A common approach adds three parts. Outstanding debts, mainly the mortgage, ideally cleared so your family can keep the home. An income replacement amount, often your annual salary times the number of years your dependants would need support, anywhere from five to twenty years depending on the age of your children. And final expenses: funeral costs, medical bills and any taxes due on your estate. Some households subtract savings already held or add a lump sum for costs such as university fees. The calculator takes whatever total you decide on; a life insurance needs or income replacement tool can help you build it.
Reading your results
The coverage gap is the extra protection needed to be fully covered. Total resources shows what you are counting, a useful check if the gap looks unexpectedly large or small. A coverage ratio near one hundred percent means you are close to the target, a low ratio flags a serious shortfall, and above one hundred percent suggests you may be paying for more cover than you need. The doughnut chart splits the coverage needed into the part already covered and the remaining gap.
When to use it
A mortgage raises your need immediately; a child adds years of dependency and future costs; a pay rise increases the income replacement figure. Paying off a loan lowers your need and may leave you over-insured, so the premiums could go elsewhere. Even without such events, an annual check keeps a small gap from becoming a large one as balances and salaries change.
Limitations
This is an estimate, not personal advice. The calculator does not know your health, your insurer's terms, or the tax treatment of policies and estates where you live, because it is designed to work in any country. It treats all liquid assets as available, which may overstate your resources if some of that money is set aside for other goals. Use the result to size the problem, then confirm the details with a qualified adviser and the rules that apply to you.
About This Insurance Coverage Gap Calculator
Use this insurance coverage gap calculator to get an instant estimate based on the figures you enter. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.
