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Disability Insurance Coverage Gap Calculator

Works out what a group long-term disability plan would actually leave you with each month after the tax an employer-paid benefit attracts, measures that against the spending that cannot stop, and splits the difference into the part a supplemental individual policy could close and the part no policy will cover, because insurers limit total replacement across every policy to a share of income. Use it to see whether cover described as replacing sixty percent of your salary would pay your bills, and how much cash the wait before it starts would take.

Last updated

Calculator overview

Inputs and outputs

This summary comes from the calculator's published input and output contract.

Inputs

Group Replacement (required)
About this input

The share of salary your plan replaces, entered as a percentage, so sixty percent is 60%. Sixty is the common figure and the published market range runs from forty to eighty. It is the headline percentage only: the monthly cap can bring the benefit below it, and tax can bring it below again.

Unit fraction Default 0.6 Range 0 to 0.8
Group Monthly Cap (required)
About this input

The most the plan will pay in a month whatever the percentage works out to. Published figures across the market run from four thousand to twenty five thousand, which is why this is something you read off your own plan document rather than a constant. Above a salary of the cap divided by the replacement share, the cap is what decides your benefit and the percentage stops applying.

Unit $/month Default 10000 Range 0 to 30000
Essential Monthly Expenses (required)
About this input

What you would still have to pay each month if you could not work: housing, food, utilities, insurance, minimum debt payments and care costs. Leave out what would stop, such as commuting and work clothes, and leave out saving. There is no published average for this, so the figure shown is a convention rather than a measurement: about seventy percent of gross monthly income at the median salary, less a tenth for the spending that falls away while you are not working. Replace it with your own total.

Unit $/month Default 4600 Range 0 to 25000
Tax Rate (required)
About this input

The marginal rate you would pay on a taxable benefit, entered as a percentage, so twenty two percent is 22%. It is applied only where the employer paid the premium. Use the rate on the last dollar of income rather than the average rate across all of it, because a benefit is taxed on top of whatever else you receive.

Unit fraction Default 0.22 Range 0 to 0.37
Premium Pct Of Income
When omitted Blank
About this input

Optional. What a full individual policy costs each year, as a share of income. Leave it blank and the calculator uses two percent, the middle of the band Guardian and Policygenius both publish, which is one to three percent for a policy replacing about sixty percent of income. Enter your own figure if you have a quote. The price shown is scaled to the partial benefit you actually need, so it is a fraction of that full cost.

Unit fraction Default Not set Range 0 to 0.06
Other Monthly Benefit
When omitted Blank
About this input

Optional. Any other monthly amount you are confident you would receive while disabled: a second policy, a union or association benefit, or Social Security disability if you choose to count it. Leave it blank to count nothing, which is the assumption the calculator ships with. Social Security is deliberately not assumed: the test is whether you can do any work at all, nothing is paid for the first five months, and most initial claims are refused.

Unit $/month Default Not set Range 0 to 10000
Current Age (required)
About this input

How old you are now. It is used only for an age-graded benefit period, where the years paid are the years between now and the age the benefit ends. Choosing a term that ends at or before your current age pays nothing, and the status line says so rather than reporting a total of zero without explanation.

Unit years Default 40 Range 18 to 80
Benefit Period (required)
About this input

How long the benefit would be paid once it starts. A fixed term of two or five years, or an age-graded term running to sixty five or to sixty seven, which is the normal retirement age for anyone born in 1960 or later. An age-graded term is worth more the younger you are, because it is the years between now and that age.

Default To age 65 Allowed 2 years, 5 years, To age 65, To age 67
Annual Salary (required)
About this input

What you earn in a year before tax. The group plan's benefit is a share of this figure, so everything else follows from it. Use your own earnings rather than a household total: a plan replaces the salary of the person it covers. Bonus and commission are often excluded from the definition a plan uses, so check what your own plan counts before relying on the answer.

Unit $/year Default 87460 Range 0 to 2000000
Employer Paid (required)
About this input

Whether your employer pays for the cover. It decides the tax and nothing else, and it is the single largest difference between what a plan advertises and what it delivers: a benefit from a plan the employer paid for is taxable income, and one paid for with money already taxed is not. A premium deducted from your pay before tax counts as employer paid for this purpose.

Default Yes Allowed Yes, No
Emergency Fund
When omitted Blank
About this input

Optional. Money you could live on during the wait before the benefit starts. Leave it blank and the whole cash requirement is still reported, with nothing set against it; enter a figure and the shortfall is measured from it, and the status line will tell you if it does not stretch far enough. Count only what you could actually reach without penalty, which usually means cash and not a retirement account.

Unit $ Default Not set Range 0 to 200000
Elimination Period (required)
About this input

How long you would have to wait after becoming disabled before the plan pays anything. Ninety days is the common choice and the range runs from thirty days to a year. The wait is uninsured by construction, so this choice decides how much cash you need to hold: the longer the wait, the cheaper the cover and the larger the reserve it assumes you have.

Default 90 days Allowed 30 days, 60 days, 90 days, 180 days, 365 days

Outputs

Supplemental Benefit
About this output

The monthly benefit a supplemental policy would actually be written for: the gap, or the ceiling above, whichever is smaller. Where the ceiling is what binds, buying more cover is not possible rather than merely expensive.

Unit $/month
Table1 Gap Column Axis
About this output

The values across the top of the grid: essential spending each month, in steps of two hundred and fifty either side of yours and never below zero. Read a column to hold the spending fixed and vary the salary. The middle entry is your own figure.

No unit declared
Replacement After Tax
About this output

That income as a share of your monthly salary. Compare it with the replacement percentage your plan advertises: the difference is the tax, the cap, or both. It is the single most useful number here for judging whether the cover is what you thought it was.

Unit fraction
Premium Estimate Monthly
About this output

An estimate of what the supplemental cover would cost each month, from a published rule of thumb rather than a rate table: a full policy costs a stated share of income a year and replaces a stated share of it, so a partial benefit costs the same fraction of that full price. It is an estimate and the label says so; a quote engine replaces it, and the real figure depends on age, occupation class, health and the options chosen.

Unit $/month
Premium Share Of Salary
About this output

Twelve of those premiums as a share of your annual salary. It is the figure to compare with the one to three percent of income the market publishes for a full policy: a partial benefit should come in well under that band, and if it does not, the cover being priced is close to a full policy.

Unit fraction
Table1 Gap Column Input
About this output

Machinery, and NOT an input. The same for the column axis: Excel substitutes into it while filling the grid, and the rest of the time it mirrors Essential_Monthly_Expenses.

Unit currency/month
Table1 Gap Values
About this output

The body of the grid: the monthly gap, recomputed for every combination of the two axes. One hundred and twenty one cells, each one the whole calculation run again with a different salary and a different level of spending. It is a component of the table rather than a result on its own.

Unit currency/month
Uncoverable Gap
About this output

The part of the gap no policy will cover, because the ceiling on total replacement has been reached. Anything above zero here is spending that would have to come from savings, from another earner or from spending less, and no premium will move it.

Unit $/month
Table1 Gap Row Input
About this output

Machinery, and NOT an input. Excel substitutes each value from the row axis into this cell while it fills the grid; the rest of the time it mirrors Annual_Salary. Change Annual_Salary above, never this: the axis is derived from it, so editing the mirror moves the axis while the table walks and the grid comes out meaningless.

Unit currency/yr
Table1 Gap Corner
About this output

Machinery. Excel requires the formula being tabulated to sit in the grid's top-left corner, where it means nothing to a reader, so it is formatted away. It holds Monthly_Gap.

Unit currency/month
Table1 Gap Row Axis
About this output

The values down the left of the grid: the annual salary, in steps of ten thousand either side of yours and never below zero. Read a row to hold the salary fixed and vary the spending. The middle entry is your own salary.

No unit declared
Elimination Shortfall
About this output

How much of that cash you would be short. With the savings line left blank it is the whole requirement, because nothing has been set against it; enter your savings and it falls to what they do not cover. The status line warns about this only where you entered a figure, since a warning about a number you never gave would be about the calculator rather than about you.

Unit $
Group Benefit Gross
About this output

What the plan would pay each month before any tax, which is the replacement percentage applied to your monthly salary, or the monthly cap if that is smaller.

Unit $/month
Elimination Cash Needed
About this output

The cash the wait would consume before any benefit arrives: essential spending for the days in the elimination period. Nothing insures this period by construction, which is what makes a longer wait cheaper. Short-term disability cover, where an employer offers it, is what usually fills it, and it is not modelled here.

Unit $
Benefit Over Period
About this output

Everything the group plan, any other benefit and the supplemental policy would pay in total over those years, in the money of the day with no discounting and no increase for inflation. It is the scale of what is at stake rather than a present value, and it assumes a claim is paid from the start of the benefit period to the end of it.

Unit $
Benefit Years
About this output

How many years the benefit would be paid: the fixed term you chose, or the years between your age and the age the term ends. Zero means the term you chose ends at or before your current age, so nothing would be paid.

Unit years
Group Benefit Net
About this output

What would actually arrive each month. Where the employer paid the premium the benefit is taxable income and your marginal rate has been taken off; where the premium was paid with money already taxed this equals the gross figure. The distance between the two lines is why a plan described as replacing sixty percent of income often replaces closer to forty seven.

Unit $/month
Monthly Gap
About this output

What essential spending exceeds that income by each month. Zero means the cover is already enough for the spending you entered. This is the figure a supplemental policy would be bought to close, and the one the grid at the foot recomputes across salaries and spending levels.

Unit $/month
Monthly Salary
About this output

Your annual salary divided by twelve. Everything the plan pays is a share of this figure, and it is also the base the ceiling on total cover is measured against.

Unit $/month
Model Status
About this output

Reads OK, or explains why the inputs are not valid or why the answer deserves a second look. The warnings are in a fixed order, so where more than one applies the first is the one shown.

No unit declared
Income If Disabled
About this output

The benefit after tax plus any other monthly benefit you entered. This is the whole of what would arrive each month, and it is what the gap is measured from.

Unit $/month
Max Supplemental
About this output

The largest monthly benefit a supplemental individual policy could add. Insurers limit total replacement across every policy a person holds to a share of income, so this is that share of your monthly salary less the group benefit before tax. It is measured on the benefit before tax because that is the cover already in force, whatever the tax does to it afterwards.

Unit $/month
This page is provided by LogicCommons for informational purposes only. Results are model outputs computed from the inputs you supply and are not financial, investment, tax, accounting, or legal advice, and no advisory relationship is created. Verify all inputs and results independently before relying on them in any decision.

LogicCommons is in beta. If a result, label, or reference looks wrong, tell us here; we read every message.

Methodology

Purpose and model boundary

Use this to find out what a disability plan at work would actually leave you with each month, and how much of the shortfall could be insured. The advertised replacement percentage is only the starting point: a monthly cap can cut it, and where the employer paid the premium the benefit is taxable, so what arrives is usually well below what the plan says.

Three things come out of it. What would arrive each month and how far short of your essential spending that falls. How much of that shortfall a supplemental policy could cover, and how much of it no policy will cover at any price, because insurers limit total replacement across every policy a person holds. And how much cash the waiting period before any benefit starts would consume.

It models long-term cover only. Short-term cover, state disability programmes and Social Security disability are not counted, and neither is any income from another earner. The premium figure is an estimate from a published rule of thumb, not a quote.

Inputs and units

Input Unit Accepted range What it means
Annual Salary $/year 0 through 2,000,000 Your salary before tax. Everything on this page is measured against it.
Current Age years 18 through 80 Your age now. It decides how many years a term ending at a fixed age would actually pay for.
Group Replacement % 0% through 80% The share of salary the plan at work says it replaces. Sixty percent is the usual figure.
Group Monthly Cap $/month 0 through 30,000 The most the plan will pay in a month, whatever the percentage works out to. Above a certain salary the cap decides the benefit and the percentage stops applying.
Employer Paid list Yes, No Whether the employer paid the premium. Where it did, the benefit is taxable income; where the premium was paid with money already taxed, it is not. This is the single largest reason a plan described as replacing sixty percent replaces closer to forty seven.
Tax Rate % 0% through 37% The rate that would be charged on a taxable benefit. It is applied only where the employer paid the premium.
Elimination Period list 30, 60, 90, 180 or 365 days How long you would wait after becoming unable to work before any benefit starts. Nothing insures this period here by construction, which is what makes a longer wait cheaper.
Benefit Period list 2 years, 5 years, to age 65, to age 67 How long the benefit would be paid for. A term ending at a fixed age pays for the years between your age and that one.
Premium Pct Of Income % 0% through 6% Optional. What a full policy costs a year as a share of income, used to estimate what a partial benefit would cost.
Essential Monthly Expenses $/month 0 through 25,000 The spending that cannot stop: housing, food, utilities, insurance, minimum debt payments. It does not move with salary, which is why the gap closes as salary rises.
Other Monthly Benefit $/month 0 through 10,000 Optional. Any other monthly benefit you would receive, entered as the amount that would actually arrive.
Emergency Fund $ 0 through 200,000 Optional. Savings you could reach quickly, set against the cash the waiting period would consume. Left blank, nothing is set against it.

Governing relationships

The monthly salary is the annual salary divided by twelve, and it is the base for everything.

The benefit before tax is the replacement percentage applied to the monthly salary, or the monthly cap, whichever is smaller. That is where a straight line turns flat: above the salary equal to the cap divided by the percentage, a raise adds nothing to the cover.

The benefit after tax is that figure less the tax rate where the employer paid the premium, and the same figure where the premium was paid with money already taxed.

What would arrive each month is the benefit after tax plus any other benefit entered. The gap is essential spending less that amount, floored at nothing.

A supplemental policy can only cover part of the gap. Insurers limit total replacement across every policy a person holds to a share of income, so the largest supplemental benefit available is that share of monthly salary less the group benefit BEFORE tax, because the benefit before tax is the cover already in force. The policy written is the gap or that ceiling, whichever is smaller, and anything left over is the part no premium will move.

The waiting period consumes essential spending for its length. What the savings entered do not cover is the shortfall.

The benefit years are the fixed term chosen, or the years between your age and the age the term ends, and the total over the period is everything the three sources would pay across those years with no discounting.

Calculation sequence

This is the order in which the reported figures depend on one another. It is not a claim about the order in which the model evaluates itself.

  1. Divide the annual salary by twelve.
  2. Apply the replacement percentage and take the monthly cap, whichever is smaller, to get the benefit before tax.
  3. Take the tax off where the employer paid the premium, to get what would actually arrive from the plan.
  4. Add any other benefit entered, to get the income if disabled, and express it as a share of monthly salary.
  5. Take that income off essential spending to get the monthly gap.
  6. Work out the ceiling on total replacement, take the benefit before tax off it, and write the supplemental policy at the gap or the ceiling, whichever is smaller.
  7. Whatever the ceiling leaves uncovered is the part no policy will reach.
  8. Multiply essential spending by the length of the waiting period, set the savings against it, and report what is short.
  9. Work out the benefit years from the term and the age, and add up everything the three sources would pay over them.
  10. Estimate the premium for the supplemental benefit from the published rule of thumb, and state it as a share of salary.
  11. Rerun the whole calculation across a grid of salaries and spending levels, so the sensitivity to each is visible rather than asserted.

Outputs and interpretation

Output Role Unit What it means
Monthly Gap primary $/month What essential spending exceeds the income that would arrive by, each month. Nothing here means the cover is already enough for the spending you entered. This is the figure a supplemental policy would be bought to close.
Supplemental Benefit primary $/month The monthly benefit a supplemental policy would actually be written for: the gap, or the ceiling above, whichever is smaller. Where the ceiling binds, buying more cover is not possible rather than merely expensive.
Elimination Shortfall primary $ How much of the cash the waiting period consumes you would be short. With the savings line blank it is the whole requirement, because nothing has been set against it.
Monthly Salary detail $/month Your annual salary divided by twelve. Everything the plan pays is a share of it, and it is the base the ceiling on total cover is measured against.
Group Benefit Gross detail $/month What the plan would pay each month before any tax.
Group Benefit Net detail $/month What would actually arrive. The distance between the two is why a plan described as replacing sixty percent of income often replaces closer to forty seven.
Income If Disabled detail $/month The benefit after tax plus any other monthly benefit entered. This is the whole of what would arrive, and it is what the gap is measured from.
Replacement After Tax detail % That income as a share of your monthly salary. Set it beside the percentage your plan advertises: the difference is the tax, the cap, or both.
Max Supplemental detail $/month The largest monthly benefit a supplemental policy could add, given the limit insurers place on total replacement across every policy a person holds. It is measured against the benefit before tax, because that is the cover already in force.
Uncoverable Gap detail $/month The part of the gap no policy will cover, because the ceiling on total replacement has been reached. Anything here is spending that would have to come from savings, from another earner, or from spending less, and no premium will move it.
Elimination Cash Needed detail $ The cash the wait would consume before any benefit arrives. Nothing insures this period here by construction, which is what makes a longer wait cheaper.
Benefit Years detail years How many years the benefit would be paid. Nothing means the term chosen ends at or before your current age, so nothing would be paid.
Benefit Over Period detail $ Everything the three sources would pay in total over those years, in the money of the day with no discounting and no increase for inflation. It is the scale of what is at stake rather than a present value, and it assumes a claim is paid from the start of the benefit period to the end.
Premium Estimate Monthly detail $/month An estimate of what the supplemental cover would cost each month, from a published rule of thumb rather than a rate table. A quote replaces it, and the real figure depends on age, occupation, health and the options chosen.
Premium Share Of Salary detail % Twelve of those premiums as a share of your annual salary. Set it against the band the market publishes for a full policy: a partial benefit should come in well under it.

Model Status reads OK, or explains why the inputs are not valid or why the answer deserves a second look before you act on it. The warnings are in a fixed order, so where more than one applies the first is the one shown. It appears alongside the results rather than in place of them.

The calculator also returns a grid that reruns the calculation across a range of salaries and spending levels at once. Its axes, corner and body arrive as separate values and are the grid's parts rather than results to read on their own; the page assembles them into the table.

Every figure above is returned by the model. The page arranges and formats them; it computes none of them.

Validation and status logic

These are the states the delivery's own recorded runs exercise, so the table records what this calculator has been observed to return rather than every branch it could take.

Condition Returned status
No salary has been entered NOT VALID: enter an annual salary above zero, because every figure here is measured against it
An amount has been entered as a negative number NOT VALID: no figure here can be negative; enter a positive amount, or leave an optional line blank
The term chosen ends at or before your current age CHECK: the benefit period you chose pays for no years at this age; choose a longer period, or check the age you entered
The gap is wider than a supplemental policy could be written for CHECK: the gap is wider than the supplemental cover insurers will write, so part of it cannot be insured at any price
The monthly cap rather than the percentage is setting the benefit CHECK: the group benefit is at its monthly cap, so the replacement percentage no longer applies at this salary
The savings entered do not cover the waiting period CHECK: the savings you entered do not cover the elimination period, so part of the wait before any benefit starts is unfunded
None of the preceding conditions applies OK

Assumptions and limitations

  • Long-term cover only. Short-term cover from an employer, any state programme, and Social Security disability are not counted, and any of them would change the answer materially.
  • A claim is assumed to be paid, from the start of the benefit period to the end of it. Nothing here says whether a claim would be accepted, and the definition of disability in a policy is what decides that.
  • Essential spending is one figure held flat. It does not rise with inflation over the benefit period and it does not fall while you are unable to work.
  • The benefit is not increased for inflation over the years it is paid. A policy with a cost of living rider would pay more in the later years.
  • The tax on a taxable benefit is one flat rate. A real return applies a schedule, and a household with no other income would usually pay less.
  • The ceiling on total replacement is a market practice rather than a legal limit, and individual insurers set their own.
  • The premium is an estimate scaled from a published rule of thumb. It is not a quote and no underwriting is behind it.
  • Income from another earner is not counted anywhere, and for many households it is the largest thing missing.

Restrictions and non-computing states

This calculator enforces the numeric limits recorded above before any figure is worked out, so a value outside them is refused rather than answered.

A benefit period that ends at or before your current age is a real state and is answered rather than refused: nothing would be paid, every figure reads accordingly, and the status line says why.

Errors and warnings

NOT VALID means the inputs do not describe a question this calculator can answer, and the figures beside it should not be relied on. CHECK is not an error: the arithmetic is sound and the figures stand, but something about the combination is worth knowing first, and the most important of those is a gap wider than any policy will cover. The status is shown with the results rather than in place of them, so a flagged answer is still a readable one.

A value the page itself refuses, because it falls outside the limits above, is rejected before the calculation is requested and no figures are returned at all. That is different again from a transport or service failure, where the page reports that the result could not be fetched rather than showing a stale or partial one.

References

The single assumption on this page that changes the answer most is whether the benefit is taxed, and it turns entirely on who paid the premium. The Internal Revenue Service puts it in three cases: "If you pay the entire cost of a health or accident insurance plan on an after-tax basis, don't include any amounts you receive for your disability as income"; where both you and your employer paid, "only the amount you receive for your disability that's due to your employer's payments is reported as income"; and where the premium was paid through a workplace plan and was never taxed to you, "the premiums are considered paid by your employer, and the disability benefits are fully taxable." A plan the employer pays for, which is the common case at work, therefore replaces materially less than its advertised percentage. See the Service's Life insurance and disability insurance proceeds questions and answers and, for the fuller treatment, Publication 525, Taxable and Nontaxable Income.

Two figures used here have no official source and are not claimed to have one. The limit insurers place on total replacement across every policy a person holds is a market practice rather than a rule, and individual insurers set their own; it is what produces the part of a gap that cannot be insured at any price, which is the finding this page exists for. The premium is scaled from a published rule of thumb about what a full policy costs as a share of income, and it is an estimate rather than a quote: age, occupation, health and the options chosen all move a real price.

The figures that matter most are on your own plan documents: the replacement percentage, the monthly cap, who pays the premium, the waiting period and the benefit period. The definition of disability in the policy decides whether a claim is paid at all, and nothing on this page speaks to that.

These sources provide background; they do not supply the calculator's assumptions or certify its result. This calculator is informational and is not financial, investment, or tax advice. Results follow directly from the plan terms and the spending you enter, and this page counts long-term cover alone: short-term cover, state programmes and Social Security disability are all outside it.

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