Disability buy-out insurance pays for a business owner's share when that owner becomes totally disabled, funding the purchase the buy-sell agreement promises. Principal, Guardian, MassMutual, and The Standard each sell it, and their policies differ more than the product name suggests. The maximums run from $2 million to $4 million, Guardian, MassMutual, and Principal each value the business with a different formula, and each policy has its own rules about when the buy-sell agreement must be signed and what counts as disabled.
This comparison comes from reading each carrier's current product specifications and underwriting rules side by side, as of October 2026. Ameritas, the fifth carrier we place, is left out because we found no disability buy-out product in its current materials.
How do the carriers compare?
Guardian has the highest lump-sum ceiling, Principal pays the most when benefits are spread over monthly installments, and MassMutual and The Standard sit lower with tighter ownership rules. The figures below are each carrier's limits for its best non-medical occupation classes on the longest waiting period.
| Carrier | Waiting period (days) | Top lump sum | Top total payout | Sole owners |
|---|---|---|---|---|
 | 360 / 540 / 720 | $4,000,000 | $4,000,000 | Yes |
 | 365 / 540 / 730 | $3,000,000 | $4,500,000 | Yes, to $1M |
 | 365 / 540 / 730 | $2,250,000 | $3,000,000 | No |
 | 365 / 540 / 730 | $2,000,000 | $2,500,000 | No |
For professional practices in their top occupation classes, Guardian, Principal, and The Standard accept two to ten owners, with tighter caps elsewhere (Guardian takes two to five owners in commercial businesses, and Principal allows eight or six owners in its lower classes). MassMutual takes two to five and considers up to ten case by case. State availability varies. Guardian is not sold in New Mexico or Virginia, Principal is not sold in Massachusetts and uses different versions in California, MassMutual is not sold in California, Massachusetts, or New Mexico, and The Standard is not sold in Colorado, Idaho, Massachusetts, New Mexico, New York, Virginia, or Wyoming.
Medical practices should read the limits more carefully. Principal caps its medical occupation classes at $1.5 million as a lump sum and $2 million in total, and The Standard caps medical and health occupations in its 4A class at $1.5 million lump sum and $2 million in total, both on the longest wait. MassMutual applies its full limits to its physician classes except in Florida and Puerto Rico, where physicians and dentists are held to 60% of them. Guardian does not vary its maximum by occupation class.
How does disability buy-out insurance work?
The policy insures one owner, is owned by someone else, and pays only when the buy-sell agreement requires a buyout because of that owner's total disability. The owner of the policy is either the other owners (a cross-purchase structure) or the business itself (an entity-purchase structure), matching how the agreement is written. Guardian and Principal both state that the insured can never own the policy on their own life.
Once the waiting period passes and the buyout is triggered, the policy pays in whichever form was chosen at application.
- A lump sum that covers the purchase price in one payment.
- Monthly installments over 12 to 60 months, depending on the carrier.
- A down payment, meaning a partial lump sum followed by installments.
The benefit is capped at the actual buyout price. MassMutual pays the lesser of the policy's benefit, the fair market value, and the purchase price, and The Standard pays the lesser of the buyout expense and its aggregate limit. When the buyout turns out smaller than the coverage, Principal and Guardian each refund the premium paid in the prior 12 months for the unused portion.
At MassMutual, The Standard, and Principal, a recovery after the buyout begins does not stop the payments. MassMutual pays out the full benefit even if the insured gets better. The Standard keeps paying installments after a recovery as long as the insured does no work for the business. Principal drops the total-disability requirement once it has made a buyout payment.
Where can the agreement and the policy disagree?
A buy-sell agreement and a buy-out policy are written by different people, and a claim pays only when both say the same thing. Each gap below is drawn from the four carriers' current terms.
The definition of disability
All four policies pay only when the owner cannot perform the duties of their own occupation and is also doing no work for the business at all. Principal bars any other occupation within the firm and Guardian bars gainful employment by the businesses named in the policy. MassMutual and The Standard each require that the owner not be working for the business. Guardian, MassMutual, and The Standard also require the owner to be under a doctor's care.
Picture a surgeon who can no longer operate but keeps managing the practice's billing and staff. An agreement that defines disability only as inability to perform usual professional duties would call for a buyout, and none of these four policies would pay while that administrative work continued. Aligning the agreement's definition with the policy's, including the not-working-for-the-business condition, closes the gap.
The waiting period
If the agreement triggers a buyout at 12 months and the policy's waiting period is 540 days, the owners owe a purchase six months before the insurance funds it. The fix is to write the agreement's trigger to the policy's waiting period. Guardian builds this into underwriting when it adds coverage on top of an existing buy-out policy from another carrier, requiring the agreement's waiting period and funding method to match the new coverage.
Principal recommends matching an overhead expense policy's benefit period to the buy-out waiting period, so the practice's fixed costs are covered while the disabled partner's share is still in limbo. That pairing is the subject of our page on business overhead expense insurance.
The valuation
The agreement sets a price, and the carrier sets how much of that price it will insure. Those can be far apart, which is why the next section compares the carriers' formulas. In our reading, Guardian goes furthest toward closing the gap by writing its valuation formula into the policy as an endorsement and applying the same formula at claim, using the business's tax returns for the years before the disability.
The agreement's timing
Every carrier here requires an agreement in force at the time of disability, and Guardian, MassMutual, and The Standard also set a deadline after issue. Guardian cancels the policy from its issue date and refunds all premiums if no agreement is in effect on the first policy anniversary. MassMutual and The Standard each require the agreement within one year of issue or treat the policy as never issued, also with premiums returned. Principal does not require an agreement to buy the policy, except in New York and for its One-Way Buy-Out, but one must be in place when the disability begins.
Ownership and relationships
The policies end when the ownership picture changes in certain ways. MassMutual and The Standard end coverage when one person comes to own more than 90% of the business. Spouses are limited or excluded at all four (Principal caps a spousal arrangement at $1 million), and Principal, Guardian, and The Standard restrict partners with large age gaps. The Standard declines owners more than 20 years apart in age, and Guardian declines two-partner firms where the partners are more than 15 years apart and the older one is 51 or above.
Age at the time of disability
Benefits shrink as the insured nears 65 at Principal and MassMutual. An owner disabled at 61 collects 80% of the maximum, at 62 it drops to 60%, and the steps continue to zero by 65. The Standard's policy also reduces with age, and its Extended Benefit Option holds off the reduction until 65 and adds reduced coverage to 70. For a partnership with an older partner, this is a gap to fund another way or to price into the agreement.
How does each carrier value the business?
Guardian, MassMutual, and Principal each convert a practice's tax returns into an insurable value with their own formula, and the same practice can qualify for very different amounts. The formulas below are each carrier's method for a professional practice, and the carrier's underwriter makes the final call.
- Guardian values a professional or personal-service firm at one times its average annual gross receipts over the last three years. Commercial businesses use net worth plus two times total owner compensation.
- MassMutual adds the owners' salaries to the business profit and multiplies by three for personal and professional service firms.
- Principal adds owner salaries to business profit, multiplies by a goodwill factor that typically falls between 2 and 3 (the full range is 1 to 5), and adds book value.
- The Standard's formula is not in the materials we hold.
Here is an illustrative three-physician practice with equal owners, average gross receipts of $3,000,000, total owner compensation of $1,500,000, business profit of $60,000, and book value of $150,000. These figures are illustrative, and actual amounts depend on underwriting, occupation class, and each carrier's review of the financials.
- Guardian values the practice at $3,000,000 (one times gross receipts), or $1,000,000 per owner.
- MassMutual values it at $4,680,000 (($1,500,000 + $60,000) x 3), or $1,560,000 per owner.
- Principal values it at $3,270,000 with a goodwill factor of 2 or $4,830,000 with a factor of 3, or $1,090,000 to $1,610,000 per owner, before its medical-class cap of $1,500,000 lump sum applies.
In this example the per-owner value ranges from $1,000,000 to $1,610,000 depending on the formula, so the high figure is 61% above the low one for the same practice. A practice with high revenue and modest owner pay would see the order flip, since Guardian's formula follows gross receipts and the others follow owner income.
Can a sole owner get disability buy-out coverage?
Yes, at Principal and Guardian, through a one-way buy-out. A key employee who has agreed to buy the business owns a policy on the sole owner and uses the benefit to make the purchase if the owner is disabled.
Principal's One-Way Buy-Out requires a cross-purchase agreement in place at application and reviewed by Principal, and caps the benefit at $1 million with issue ages 18 to 55. Guardian's version requires the succession employee to be named in the agreement, along with that employee's interest in the business on the owner's disability. Guardian bars parent-child and spousal pairs and, when the owner is 51 or older, limits the age gap to 15 years. MassMutual and The Standard require at least two owners.
Which waiting period and payout method fit?
The waiting period sets both the price and the ceiling. A longer wait generally costs less, and it allows a higher maximum at every carrier here. Guardian's ceiling, for example, is $3 million on its 360-day wait and $4 million on its 720-day wait. A shorter wait gets money to the remaining owners sooner but at a higher premium.
Installments raise the limit at Principal, MassMutual, and The Standard. Principal's lump-sum ceiling of $3 million rises to $4.5 million when paid over 60 months, MassMutual's rises from $2.25 million to $3 million, and The Standard's rises from $2 million to $2.5 million. MassMutual's down-payment option requires the lump-sum portion to fall between 25% and 50% of the total, with a $1.5 million cap on that portion.
An installment sale can change the selling owner's tax timing, so the payout method is worth settling with the practice's attorney and tax advisor before the policy is applied for.
What happens if the buyout isn't funded?
An unfunded buy-sell agreement can leave the disabled owner holding a share no one can afford to buy. In the three-physician example above, the two remaining partners would need $1 million or more between them, from savings or a loan, at the moment they lose a third of their clinical production. Depending on how the agreement is written, the disabled partner can keep an ownership stake and a claim on profits while unable to work, and the remaining partners carry the practice in the meantime.
The Social Security Administration's own publication says "Studies show that a 20-year-old worker has a 1-in-4 chance of developing a disability before reaching full retirement age" (SSA, Disability Benefits, 2025). A partnership carries that risk once for every owner.
How is buy-out coverage different from key person and overhead coverage?
Buy-out coverage pays for the ownership transfer, while key person disability insurance replaces the revenue the business loses while a key person is out and overhead expense coverage pays the practice's fixed bills. Personal disability insurance replaces the owner's own income, and in a long disability the three business-side policies pay at different times.
- Overhead expense coverage begins after its own short waiting period and pays the practice's rent, staff, and other fixed costs.
- The disabled owner's personal policy begins after its own waiting period and replaces part of their income.
- Buy-out coverage pays at 12, 18, or 24 months if the disability continues, and the ownership transfers.
For owners deciding which of these a practice needs first, our disability insurance guide for business owners covers the personal and business policies together.
How does underwriting work?
Underwriting looks at the business's finances and at each owner's health. On the financial side, Principal asks for two years of business tax returns, a year-to-date profit and loss statement, and a current balance sheet. Guardian asks for three years of returns from a professional practice and two from a commercial business. Principal, MassMutual, and The Standard require every eligible owner to apply (Principal and MassMutual in proportion to ownership), and Guardian requires every owner holding more than 10%, which keeps one partner from insuring only the others.
On the medical side, each owner is underwritten individually, and a rating or exclusion on one partner is common enough to plan for. Seaworthy's placed book of individual disability policies (2026 audit) shows about 28% carrying an exclusion rider or an extra-premium rating, about 26% for physicians and 23% for dentists. Mental and nervous conditions are the most common reason, at roughly 43% of exclusions. The data behind those figures is in our State of Disability Underwriting report.
On the personal policies we place, we ask at issue for ratings and exclusions to be reconsiderable, and we have had strong success getting them removed, commonly about two years after issue once a clean interval passes. A partner who is declined outright is a different problem. Guardian will cover a single owner when every other owner is uninsurable, The Standard will still consider the remaining owners, and MassMutual gives special consideration when the other owner is declined. Principal will not issue buy-out coverage to an owner already over-insured on personal disability coverage.
How are buy-out premiums and benefits taxed?
Premiums are generally not deductible, and benefits are typically received free of income tax. The buyout itself is usually treated as a sale of the disabled owner's interest, so that owner may recognize a capital gain on the difference between the price and their basis.
The structure matters for the remaining owners. In a cross-purchase arrangement, the buying owners generally get a higher cost basis in the shares they purchase, which lowers their own gain if they sell later. In an entity purchase, the business buys the share and the remaining owners generally do not receive that step-up. MassMutual requires a trust to hold the policies when more than two owners use a cross-purchase arrangement. Tax treatment varies by entity and agreement, so confirm the specifics with a tax professional.
Comparing the four on your agreement
A useful comparison starts from the agreement itself. Bring the buy-sell agreement, the last two to three years of business returns, and each owner's age and occupation, and we will run the practice through the carriers' valuation formulas, flag the clauses where the agreement and the policies disagree, and quote all four on matching waiting periods and payout methods.