Insurance
Disability Insurance Calculator
Your ability to earn is the asset everything else rests on, and it is the one most people leave uninsured. Group coverage typically replaces 60% of base pay, but when the employer pays the premium the benefit is taxable, which quietly cuts it to something closer to 45%.
Tested against worked examplesHow we verify
Housing, food, insurance, minimum debt payments — what you cannot stop paying.
Group long-term disability usually replaces 60% of base pay.
Group policies almost always cap the monthly payout.
A spouse's income, an individual policy, or Social Security Disability if awarded.
Monthly coverage gap: $1,440
Monthly coverage gap
$1,440
What a supplemental policy would need to fill each month.
Because your employer pays the premium, the benefit is taxable income — which is why a 60% policy replaces closer to 45%. Paying the premium yourself with after-tax dollars, where the plan allows it, makes the benefit tax-free and usually costs far less than the coverage it buys.
- Current monthly income
- $10,000
- Benefit you would receive
- $4,560
- Income replacement ratio
- 45.6%
- Essential monthly spending
- $6,000
- Months your savings alone would last
- 5 months
- Income at risk over the period
- $360,000
After tax — employer-paid benefits are taxable income.
Compare scenariosTry three values of one input
| Annual income | |||
|---|---|---|---|
| Monthly coverage gap | $1,820 | $1,440−$380 | $1,060−$760 |
| Current monthly income | $9,167 | $10,000+$833 | $10,833+$1,667 |
| Benefit you would receive | $4,180 | $4,560+$380 | $4,940+$760 |
| Income replacement ratio | 45.6% | 45.6%+0% | 45.6%+0% |
| Income at risk over the period | $330,000 | $360,000+$30,000 | $390,000+$60,000 |
Every other input stays at the value you set above — currently $120,000 for annual income. Differences are measured against the first column.
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How this calculator works
The gross benefit is monthly income × the coverage percentage, capped at the policy maximum. When the employer pays the premium the benefit is reduced by your marginal tax rate, because it is taxable income. Other guaranteed benefits are added, and the gap is essential spending less the total. Savings runway is liquid savings ÷ essential monthly spending.
Social Security Disability Insurance is not assumed — awards are difficult, slow, and offset most group policies dollar for dollar. Own-occupation versus any-occupation definitions, elimination periods, benefit duration limits, cost-of-living riders and the exclusion of bonus income from covered pay all matter and are not modelled. Read the policy summary, not just the percentage.
What this assumes
- The benefit percentage and elimination period you enter. Real policies vary enormously in both, and in how they define disability.
- Whether benefits are taxable depends on who paid the premium: employer-paid benefits are generally taxable, personally paid ones generally are not.
- Own-occupation and any-occupation definitions are not distinguished here, and the difference decides many claims.
What changes this number
- The definition of disability
- Own-occupation cover pays if you cannot do your own job; any-occupation pays only if you cannot do any job. The gap is the policy's real value.
- Elimination period
- The waiting period before benefits start. A longer one lowers the premium and is only bearable with an emergency fund to bridge it.
- Who pays the premium
- Decides whether the benefit arrives taxable or tax-free, which changes how much cover you actually need.
A worked example
Take the $120k income, employer-paid scenario. These figures are produced by the calculator above, not written alongside it, so they always match what the tool returns.
What you enter
- Annual income
- $120,000
- Employer coverage
- 60%
- Who pays the premium
- Employer pays — the benefit is taxable
What it returns
- Monthly coverage gap
- $1,440
- Current monthly income
- $10,000
- Benefit you would receive
- $4,560
- Income replacement ratio
- 45.6%
- Essential monthly spending
- $6,000
Because your employer pays the premium, the benefit is taxable income — which is why a 60% policy replaces closer to 45%. Paying the premium yourself with after-tax dollars, where the plan allows it, makes the benefit tax-free and usually costs far less than the coverage it buys.
Try an example
Frequently asked questions
How much disability insurance do I need?
Enough to cover essential spending, not full income. Work from the bills you cannot stop paying — housing, food, insurance, minimum debt payments — rather than your salary. Most people need 60–70% of gross income once tax treatment is taken into account.
Is disability insurance taxable?
It depends on who paid the premium. Employer-paid premiums make the benefit taxable income; premiums you pay with after-tax dollars make it tax-free. That single distinction changes a 60% policy into roughly 45% of income, and it is the most consequential detail in the whole product.
Is employer coverage enough?
Often not. It is capped in dollars, usually excludes bonus and commission, is taxable when the employer pays, and disappears when you leave the job. It is a good foundation and a poor complete answer, particularly for higher earners whose income exceeds the cap.
What is own-occupation coverage?
It pays if you cannot perform your own occupation, even if you could work in another. Any-occupation coverage only pays if you cannot do any suitable work at all, which is a far higher bar. For a surgeon or a specialist, the difference is the entire value of the policy.
How likely is a long-term disability?
More likely than most people assume, and considerably more likely than death during working years. The Social Security Administration has long put the chance of a disability lasting more than 90 days before retirement at roughly one in four for a 20-year-old worker.
What is the elimination period?
The waiting time before benefits begin, typically 90 days. Your emergency fund has to cover it, along with any short-term disability coverage. Longer elimination periods lower the premium substantially, which makes savings and insurance genuinely complementary.
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Disclaimer: DayCents provides this calculator for educational purposes only. Results are estimates based on your inputs and the stated assumptions — they are not financial advice, a quote, or an offer of credit. Consult a qualified financial professional before making major money decisions.