Business Partner Disability Buy-Out Calculator 2026: How Much of Your Ownership Interest Is Actually Funded?
Almost every partnership agreement on the shelf is funded for one exit: death. The life insurance is in force, the cross-purchase endorsements are signed, and the partners sleep well. Then a partner has a stroke at 47, survives, and cannot work again — and the buy-sell clause that says the remaining owners must purchase the disabled owner’s interest has no money behind it. This calculator prices that exact hole.
Enter your business value, your ownership percentage, the waiting period the policy uses, and what you already have set aside. The tool values your interest, projects what the business is worth on the day a buy-out policy would actually pay, prices disability buy-out coverage for the shortfall, and shows the exposure the remaining partners carry while they wait. Every figure below is generated by the same engine that drives the sliders, so the tables and the calculator never disagree.
Business Partner Disability Buy-Out Calculator
Values update as you move the sliders. Premiums are illustrative, priced from the rate table in this page’s assumptions note.
Unfunded obligation. $715,680 of the $1,015,680 purchase price (70.5% of the deal) has no funding source. The $725,000 of buy-out coverage recommended above costs $1,127.52 a month, about 9.4% of your salary. Without it the remaining owners would have to find that money in cash or borrow it, and you would keep an ownership stake in a business you can no longer work in.
You own $1,200,000 of a $3,000,000 business. A 24-month waiting period at 8% annual value erosion puts the valuation at $2,539,200 on the day the policy pays, so the obligation is $1,015,680. You have $300,000 set aside ($250,000 of existing funding plus $50,000 of personal reserves), leaving a $715,680 gap.
Your $6,000 a month disability income benefit replaces income. It funds $0 of the $715,680 purchase price, because the money has to reach the buyers, not you.
Every row re-prices the same obligation at a different waiting period, using your other inputs.
| Waiting period | Value erosion | Buy-out price at trigger | Premium for the full obligation | Exposure the buyers carry |
|---|---|---|---|---|
| 24 months | 15.4% | $1,015,680 | $1,579.59 | $748,800 |
A longer payout period lowers the premium and stretches the buyers’ obligation.
| Payout period | Premium for the full obligation | Each installment the buyers owe | Years of dependency |
|---|---|---|---|
| Installments over 36 months | $1,579.59 | $28,213 | 3 years |
Monthly premium for $500,000 of buy-out benefit, using your occupation class, waiting period, payout period, health class and tobacco status.
| Age | Male, $500,000 benefit | Female, $500,000 benefit |
|---|---|---|
| 45 | $777.60 | $622.08 |
Why Disability Is the Hole in Every Succession Plan
Death is a single moment. Disability is a slow, expensive event that can run for years, and it attacks the business twice. The owner stops producing, which usually means the revenue that supports the valuation stops too. At the same time the owner still holds equity, still draws distributions, and still has a vote. In a two-owner professional practice that is not an inconvenience, it is an impasse: one partner works full time while the other owns half the enterprise.
The Social Security Administration notes that about one in four of today's 20-year-olds will become disabled before reaching full retirement age, and the agency's own disability process builds in a five-month waiting period before SSDI begins, followed by a 24-month wait for Medicare. If the federal program assumes disability needs a long runway, a partnership buy-sell agreement that pays on day one has the same problem. Buy-out policies exist precisely because the event is neither instant nor rare.
Most agreements do address disability, and that is often worse than silence. A clause that requires the remaining owners to purchase the disabled partner's interest within 12 months is a legal obligation with no funding mechanism, which converts a business problem into a personal debt for the people still running the company. The calculator above shows the size of that debt before anyone signs.
- Life insurance funded for the death trigger does nothing for a living, disabled owner.
- A buy-sell clause with no funding source is a promise the surviving owners must personally finance.
- The buy-out price is usually fixed by the agreement, so the number is knowable in advance.
- The waiting period, not the premium, is what determines whether the partners can actually close the deal.
- Group and individual disability income policies pay the disabled owner and fund none of the purchase.
What Disability Buy-Out Insurance Actually Pays For
A disability buy-out policy is a purpose-built contract: it names the buyers (or the entity) as beneficiary, it pays only when the disabled owner's interest changes hands, and it pays the purchase price rather than reimbursing lost income. That single design choice is why it is not a substitute for a long-term disability policy and why a long-term disability policy is not a substitute for it.
The table below separates the funding sources that business owners routinely confuse. Each one pays a different person for a different purpose, and only two of them can actually buy out an owner.
| Coverage | Who receives the money | What it funds | Typical trigger |
|---|---|---|---|
| Individual disability income (DI) | The disabled owner | Replacement income, usually up to 60 to 70 percent of earnings | Total disability, after 60 to 180 days |
| Disability buy-out policy | The buying partners or the company | The purchase price of the disabled owner's interest | Total disability plus transfer of ownership, after 6 to 24 months |
| Life insurance in a buy-sell agreement | The buying partners or the company | The purchase price, but only if the trigger is death | Death of an owner |
| Business overhead expense (BOE) | The business | Rent, payroll, utilities and similar fixed costs while the owner is out | Total disability, after a 30 to 90 day wait |
| Cash reserve or sinking fund | Whoever the partners direct | Self-funded purchase, funded out of profit | Any trigger the agreement names |
The distinction matters at claim time. A partner with an excellent long-term disability policy at 60 percent of a $200,000 income receives $10,000 a month, and the partnership still owes the full price of the shares. The reasonable way to compare BOE to the buy-out need is a separate calculation, which the business overhead expense calculator covers, because overhead coverage reimburses fixed expenses and never touches equity.
The Waiting Period Is the Most Expensive Part of the Deal
Buy-out policies do not pay in the first month. Twelve and 24 month waiting periods are standard, because a shorter waiting period attracts claims that would have resolved, and because the buyer needs the disability to be permanent before writing a cheque for a whole ownership stake. That design creates a second obligation that appears nowhere in the agreement: between the last day of work and the payment, someone has to keep the business intact and the disabled owner solvent.
The calculator's waiting-period exposure number adds two costs: the salary the company keeps paying during the wait, and the business value that erodes because the owner-dependent revenue has stopped. In the default scenario that exposure is $748,800 and the policy pays nothing toward it. Moving the waiting period from 24 months to 3 months cuts the exposure to roughly a tenth of that, and the premium goes up instead. The trade-off is the real decision, not the headline premium.
One more consequence of a long waiting period deserves attention: the buy-out price. If the agreement values the business at the last valuation date, the partners are obliged to pay for the value that existed before the disability, not the value that survives it. Some agreements fix the price and let the erosion fall on the buyer, others require an appraisal at the trigger date, which transfers the loss to the disabled owner's family. Either way the financing question is the same, and the calculator prices the fixed-price version, which is the harsher of the two.
How the Buy-Out Price Is Set Before Anyone Signs
The price is a drafting decision, and it drives everything the calculator shows. Agreements use one of three methods, sometimes in combination, and each produces a different number on the trigger date.
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- Stated price. The partners agree a number and update it annually by resolution. Simple to fund, and it goes stale the moment the business changes.
- Formula. The agreement defines the price, for example a multiple of trailing earnings, book value, or a percentage of revenue attributable to the owner. Accurate but the multiple has to be renegotiated as the business matures.
- Appraisal at the trigger. An independent valuation is ordered when the event occurs. Fair in theory and slow in practice, which is a problem when a disability claim is already paying.
- Hybrid. A floor price that guarantees funding, topped up by an appraisal if the business has grown. Common in professional practices where the client relationships follow the individual owner.
Whatever the method, the agreement should state the funding obligation in the same sentence as the price. A valuation clause with no funding clause is the single most common defect in owner-exit planning, and it is visible the moment you compare the price to the coverage in force, which is exactly what the calculator does.
Lump Sum or Installments: Who Carries the Financing Risk
A buy-out policy can pay the buyers a lump sum or a stream of installments, most commonly over 24, 36 or 60 months. The premium is highest for a lump sum, because the insurer has to hand over the entire purchase price at once and takes on the full mortality and claims risk in one payment. A 60-month installment structure lowers the premium meaningfully and stretches the buyers' obligation over five years.
The trade-off is not just cost. A lump sum closes the transaction cleanly and gives the disabled owner cash to live on, while installments keep the buyer and seller financially entangled for years, create credit risk if the company later struggles, and require a written installment note with interest to avoid a tax problem. Whichever route the agreement takes, the installment amount has to be affordable for the business in a bad year, not just a good one.
Cross-Purchase or Entity Redemption
The same obligation can sit with the individual partners or with the company, and the choice changes who owns the policy, who pays the premium and who ends up with the basis. It also changes the number of policies: a cross-purchase arrangement in a three-owner business needs six policies to cover every owner pair, while the entity needs three.
| Feature | Cross-purchase | Entity redemption |
|---|---|---|
| Who owns the policy | Each partner owns coverage on the other partners | The company owns one policy per owner |
| Who pays the premium | The individual partners, with personal dollars | The company, as a business expense that is not deductible |
| Policy count with four owners | Up to twelve policies | Four policies |
| Basis after the buy-out | The buying partners usually get a full step-up in basis | Basis increases only to the extent of the redemption, and can be treated as a dividend if the rules are missed |
| Who controls the funding if a partner leaves | The remaining partners, who keep their own policies | The company, which has to unwind or reassign ownership |
| Best fit | Small practices with few, similar owners | Larger companies with many owners or frequent turnover |
The funding arithmetic in this calculator is the same for both because the obligation is the same. What changes is the premium each owner feels, which the "each owner's monthly share" card reflects, and the tax outcome. A redemption that fails the ownership tests can be taxed as a dividend to the owner whose shares are redeemed, which is why the entity route should be drafted with a tax adviser rather than copied from a template.
Four Worked Examples
These four profiles are fixed examples, computed with the same engine as the calculator above, and they show how much the answer swings on the business type and the growth of the existing funding.
| Profile | Business value | Owner share | Buy-out price at trigger | Gap after funding | Recommended coverage | Monthly premium | Status |
|---|---|---|---|---|---|---|---|
| Two-owner professional practice, 48 male, no funding in place, 24-month wait | $1,200,000 | 50% | $507,840 | $482,840 | $500,000 | $788.40 | Unfunded |
| Three-owner sales agency, 40 male, $400,000 funded, 12-month wait | $2,500,000 | 33% | $775,500 | $225,500 | $250,000 | $517.50 | Partial |
| Four-owner asset-heavy company, 52 female, $900,000 funded, 6-month wait | $6,000,000 | 25% | $1,484,925 | $334,925 | $350,000 | $1,249.65 | Mostly funded |
| Two-owner practice, 45 male, $800,000 funded, 12-month wait | $1,500,000 | 50% | $690,000 | $0 | None needed | Not applicable | Fully funded |
The first row is the one to study. Two years of erosion costs the practice $92,160 of value, and with no policy in force the working partner owes $507,840 for shares in a business that just lost half its production. The fourth row shows the opposite: an owner who funded early pays nothing more, because the coverage in force already exceeds the obligation.
What the Coverage Costs
Disability buy-out premiums are quoted per $1,000 of benefit and scale sharply with age, occupation class and how long the insurer has to wait before paying. A 24-month waiting period roughly halves the rate of a 3-month wait, which is why long waiting periods are the standard design for buy-out coverage even though they create the exposure described above.
| Age | Rate per $1,000 of benefit | Male, class 2, 24-month wait, 36-month payout | Female, same settings |
|---|---|---|---|
| 35 | $1.04 | $518.40 | $414.72 |
| 45 | $1.56 | $777.60 | $622.08 |
| 55 | $2.68 | $1,339.20 | $1,071.36 |
| 65 | $5.10 | $2,548.80 | $2,039.04 |
The premiums in that table are monthly amounts for $500,000 of buy-out benefit, which is a realistic face amount for a 25 to 50 percent interest in a mid-sized practice. Compare them with the price of insurable life coverage: a 45-year-old male can buy $500,000 of 20-year term for a small fraction of the buy-out premium. That gap is the honest reason buy-out coverage gets postponed, and it is also why the exposure survives. A cheaper alternative in some agreements is a longer waiting period combined with a written option for the partners to buy, funded by the policy at the end of the wait.
Watch This: Buy-Sell Disability Insurance Explained
This short walkthrough covers how disability funding fits into a buy-sell agreement, including the waiting period and the difference between income replacement and equity purchase.
Frequently Asked Questions
What is disability buy-out insurance?
It is a disability contract written for a business rather than an individual. The policy names the buying partners or the company as beneficiary, pays only when the disabled owner's interest is actually transferred, and pays the purchase price instead of an income benefit. Policies typically include 6, 12 or 24 month waiting periods, a lump-sum or installment payout, and a total disability definition tied to the owner's own occupation for an initial period.
Why does my long-term disability policy not fund the buy-out?
Because it pays you, not the buyers. An individual disability policy replaces a percentage of your income while you are disabled, and the benefit usually stops at retirement age or when you return to work. The partnership still owes the full purchase price for your shares, and it has to find that money somewhere else. The two contracts solve different problems, and a well-funded buy-sell agreement needs both.
How much does disability buy-out coverage cost?
Rates are quoted per $1,000 of benefit and depend on age, gender, occupation class, health, tobacco use, the waiting period and the payout period. In the table above, $500,000 of benefit for a 45-year-old male in a light-duty occupation class with a 24-month wait and a 36-month payout runs about $778 a month. A 3-month waiting period costs roughly twice that, and moving the same coverage to a 65-year-old male more than triples it.
How long is the waiting period and why does it matter?
Twelve and 24 month waiting periods are the market standard, because the insurer wants the disability to be permanent before it funds a purchase. The waiting period is the part of the risk the business keeps: during the wait the company continues to pay the owner's salary, absorbs the decline in value and receives nothing from the policy. A shorter waiting period lowers that exposure and raises the premium, and the calculator prices both sides of the trade-off.
What happens if a partner is disabled and there is no buy-out agreement?
The disabled owner keeps the shares and the rights that come with them, including distributions and votes, while the working partners carry the whole operating load. If the agreement has a mandatory purchase clause but no funding, the remaining owners owe the price personally, which usually means a bank loan or a seller-financed note at whatever terms the disabled owner's family will accept. Both outcomes are avoidable, and both are common.
Are disability buy-out proceeds taxable?
The policy proceeds are generally received by the buyer or the company and used to purchase the interest, so the payment itself is a transaction price rather than income. The owner selling the interest generally reports capital gain on the sale, measured against their basis in the shares, and an installment sale spreads that gain over the payment period. Premiums are not deductible when the partners or the company pay them individually, and entity-owned arrangements carry their own rules. Confirm the treatment with a tax adviser before the agreement is signed.
Do I need both life insurance and disability buy-out coverage?
Yes, if the agreement covers both triggers. Life insurance funds the death trigger under the agreement, and for employer-owned policies it must satisfy the notice and consent requirements of Internal Revenue Code section 101(j). Disability buy-out coverage funds the living trigger. The funding arithmetic is similar, which is why the buy-sell agreement funding calculator and this page are designed to be read together.
Related Tools and Next Steps
Work through the funding side and the income side separately, then bring both numbers to the agreement drafting session.
- Buy-sell agreement funding calculator — price the death trigger and compare cross-purchase, entity redemption and wait-and-see structures.
- Disability buy-sell agreement guide — the drafting checklist for the disability trigger, including valuation and transfer mechanics.
- Disability income calculator — size the income replacement that protects your household while you are out of the business.
- Business overhead expense calculator — cover the rent, payroll and fixed costs the practice keeps paying during the waiting period.
- Life insurance capacity calculator — check how much coverage a carrier will actually issue on a large business-purpose case.
Related Resources
- AM Best ratings search — confirm the financial strength of any carrier quoting your buy-out coverage.
- NAIC consumer resources — state insurance departments, producer licensing and complaint routes.
- Social Security disability benefits — the federal program's five-month waiting period and 24-month Medicare wait.
- IRS Publication 525 — how benefits and insurance proceeds are taxed, and why the treatment depends on who pays the premium.
Assumptions. Premiums are illustrative and derived from this page's own rate table: a base monthly rate per $1,000 of buy-out benefit rising with age from $0.90 at 25 to $5.90 at 65, multiplied by occupation class (1.00 to 2.10), waiting period (1.45 for 3 months down to 0.72 for 24 months), payout period (1.35 for a lump sum down to 0.85 for 60 months), health class (0.90 to 1.60), 0.80 for female and 1.75 for tobacco. Carrier quotes vary with the definition of disability, the contractual transfer requirement and state availability. Value erosion is an estimate of how much business value depends on the individual owner, and it is not an appraisal.
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