Probably yes. Your spouse's paycheck does not replace disability insurance, and the math behind "we could live on one income if we had to" almost never checks out once you actually run the numbers. More than 1 in 4 workers will be disabled before they reach retirement age, according to the Social Security Administration. That statistic does not care how much your partner earns.
The idea feels logical. Two incomes come in, so if one stops, the other keeps the household running. But dual-income households build dual-income lifestyles. Your mortgage, your car payments, your childcare costs, and your retirement contributions are all sized to what both of you bring home. Losing one income does not cut your expenses in half. It cuts your income in half while your bills stay exactly the same.
This guide walks through the real math, the costs nobody prices in, and the situations where you genuinely can skip disability insurance as a couple.
The dual-income trap: your expenses already grew to match
In 1967, only 43.6% of American households had two incomes. By 2020, that number hit 60% (Bureau of Labor Statistics). In families with children, two-thirds now have both parents working. The economy adjusted. Housing prices, childcare costs, and the general cost of raising a family all inflated to absorb two paychecks instead of one.
Your household did not pocket the second income as pure savings. Your budget expanded to fill it. The house you bought, the neighborhood you chose, the school district you moved into, and the retirement you are planning all assume both incomes continue.
Here is a simple test. Write down every fixed monthly obligation your household has right now. Not what you think you could cut, but what you actually owe.
| Monthly obligation | Your amount | Can you cut it? |
|---|---|---|
| Mortgage or rent | $_____ | No (locked in) |
| Property taxes and insurance | $_____ | No |
| Car payments | $_____ | No (loan term) |
| Health insurance premiums | $_____ | No |
| Childcare or school tuition | $_____ | Maybe (but who watches the kids?) |
| Student loans | $_____ | No |
| Utilities and groceries | $_____ | Slightly |
| Retirement contributions | $_____ | Yes (but at what cost?) |
| Total fixed costs | $_____ |
Now compare that total to your spouse's take-home pay alone. Not gross pay. Take-home, after taxes and their own retirement contributions. If the number does not cover your obligations with at least 20% left over for the unexpected, you cannot actually live on one income. And that calculation still assumes nothing else changes, which brings us to the cost nobody talks about.
The second income loss: what happens to the healthy spouse
Every conversation about disability focuses on the person who gets hurt or sick. Almost nobody talks about what happens to the spouse who is still working. The data here is hard to ignore.
According to the National Alliance for Caregiving and AARP, 39% of caregivers quit their jobs entirely. Another 34% leave because their employer will not offer flexible hours. In total, 61% of caregivers experience some kind of employment change, from arriving late and leaving early to taking unpaid leave to accepting a demotion.
MetLife studied the lifetime financial impact on caregivers. Women who leave the workforce to care for a disabled spouse lose an average of $324,044 in lifetime wages, pension, and Social Security benefits. Men lose $283,716. Single female caregivers are 2.5 times more likely to live in poverty during old age.
The "my spouse works" safety net assumes your spouse keeps working at full capacity. But when one partner becomes disabled, the healthy partner often cannot maintain the same career trajectory. Someone has to manage medical appointments, handle insurance paperwork, modify the house, drive to therapy sessions, and provide daily care. That someone is almost always the working spouse.
So now you have lost one income entirely and damaged the other. The dual-income household just became a reduced-single-income household with higher expenses. That is the second income loss nobody prices in when they say "we will be fine on one paycheck."
Your spouse's income does not affect your disability benefits (mostly)
Most people do not realize this. If you have a private disability insurance policy, your spouse's income has zero effect on your claim. The insurance company looks at your income before disability and your current ability to work. Your partner's paycheck does not enter the equation.
This also applies to Social Security Disability Insurance (SSDI). SSDI is based entirely on your own work history and earnings record. Your spouse could earn $500,000 a year, and it would not reduce your SSDI benefit by a single dollar.
The one exception is Supplemental Security Income (SSI). SSI is a needs-based program, and the Social Security Administration "deems" your spouse's income as available to you. A working spouse's earnings can reduce or completely eliminate SSI eligibility. But SSI and SSDI are different programs. If you have a work history, you are likely applying for SSDI, not SSI.
In practice, disability insurance protects your income regardless of what your spouse earns. It is not a household-level product. It covers your specific earning power. Your spouse's job does not make your income less worth protecting.
If you have employer coverage, read about how employer disability coverage works to figure out what gap you actually need to fill.
The tax math that changes the picture
Dual-income households have a tax dynamic that most people miss when thinking about disability. It can actually work in your favor.
When one income disappears, the household drops into a lower tax bracket. If you earned $90,000 and your spouse earns $110,000, your combined income was $200,000. Losing your salary does not just remove $90,000. It also reduces the tax rate on the remaining $110,000 because your household is no longer in the same bracket.
Now add disability benefits to the picture. If you paid your own premiums with after-tax dollars, your disability benefits arrive completely tax-free. That means a policy replacing 60% of your $90,000 salary pays $54,000, and you keep every dollar. Compare that to working, where $90,000 in salary might leave you with $65,000 after federal and state taxes.
| Who paid the premiums | Tax treatment of benefits |
|---|---|
| You paid with after-tax dollars | Benefits are tax-free |
| Employer paid | Benefits are fully taxable |
| Pre-tax or cafeteria plan | Benefits are fully taxable |
| Split (you and employer) | Taxed proportionally |
If your employer pays the premiums, the math looks different. A group plan that replaces 60% of your salary is really replacing about 40 to 45% after you pay taxes on those benefits. That is why many financial planners recommend supplementing employer coverage with a personal policy you pay for yourself. The personal policy benefits arrive tax-free, making the effective replacement rate much higher.
The tax angle is one of the strongest arguments for buying your own policy even when your spouse earns a good living. But taxes are only one part of the picture. Disability also increases your spending.
The expenses that increase when disability happens
Disability does not just cut your income. It raises your expenses at the same time. Your budget gets squeezed from both directions at once.
Medical costs are the obvious one. Even with health insurance, copays, deductibles, prescriptions, physical therapy, medical equipment, and home modifications add up fast. A wheelchair ramp costs $1,000 to $8,000. A stairlift runs $2,000 to $5,000. Bathroom modifications can hit $10,000 or more.
Then there are the costs nobody thinks about until they are living it. When you cannot mow the lawn, shovel snow, clean the house, or do basic home maintenance, you start paying someone else to do it. Meal delivery, transportation to appointments, and childcare that one parent used to handle during off-hours all become new line items.
According to a study by Principal Life, 46 to 48% of all mortgage foreclosures are caused by a disability. Not job loss. Not bad investments. Disability. Only 3% of foreclosures are caused by death. Most households plan for death. Far fewer plan for disability.
The average SSDI benefit is about $1,816 per month as of 2026. Try covering a mortgage, increased medical costs, and daily living expenses on that amount. Group long-term disability from your employer, if you even have it, typically replaces 40 to 60% of your salary and is taxable if your employer paid the premiums. That gap between what comes in and what goes out is exactly what personal disability insurance fills.
To understand what a policy actually costs, read the full cost breakdown by income and profession.
The divorce risk nobody wants to discuss
This section is uncomfortable, but it is real. Disability increases the risk of divorce. Research consistently shows that a serious disability puts real strain on marriages, and the divorce rate for couples dealing with disability is higher than the general population.
If your entire financial plan rests on "my spouse works," then divorce removes that plan completely. A disabled person who relied on their partner's income for years now has no income, no career trajectory, and limited employability.
There is also a financial angle specific to disability benefits. If you were married for 10 years or longer, an ex-spouse can claim up to 50% of your monthly SSDI benefit. That does not reduce your payment, but it shows how tangled disability and marriage finances get.
Disability insurance is the only financial product that protects your individual earning power regardless of your marital status. Life insurance pays out when you die. Your spouse's income disappears if they leave. Your savings get divided in a divorce. But your disability policy pays you, personally, based on your inability to work. It is not tied to anyone else's decisions.
We broke down whether long-term disability is actually worth it with the math laid out.
When you can genuinely skip disability insurance
Not everyone needs it. There are real situations where buying disability insurance as a couple does not make financial sense.
You can probably skip it if all of these are true:
1. Your household can survive on one income indefinitely. Not for six months. Indefinitely. That means your spouse's take-home pay covers every fixed expense, all variable costs, continued retirement savings, and has a buffer for increased medical and care expenses. Run the table from earlier in this article with real numbers.
2. You have enough liquid savings to self-insure. A common rule of thumb is that your net worth should exceed 10 times your annual spending before self-insurance makes sense. If your household spends $100,000 a year and you have $1 million in liquid assets outside retirement accounts, you are in the conversation. Below that, you are gambling.
3. Your savings will not be destroyed by the gap period. Even if you have SSDI coverage, the average approval takes months, and only about 20 to 25% of initial applications are approved. You need to survive financially during the waiting period without draining assets that were supposed to fund your retirement.
4. Neither of you would need to reduce work to provide care. If your disability is severe enough to prevent you from working, it may be severe enough to require daily assistance. If your spouse is the one providing that care, they are not working full-time anymore. The "one income covers us" math just broke.
5. You are close to retirement. If you are 58 with a paid-off house and substantial retirement savings, the calculus changes. You are insuring a shorter window of remaining earning years, and the premium may not be worth it relative to your assets.
If even one of these conditions is not true, you probably need coverage.
How much coverage makes sense for a dual-income household
You do not necessarily need to max out coverage on both spouses. There is a spectrum of options, and the right one depends on your numbers. Find your household's income gap first, because it shows how much cover you need.
| Approach | When it makes sense | Typical cost |
|---|---|---|
| Max coverage on both | Both incomes are essential, high fixed costs | Highest |
| Max on higher earner, partial on lower | One income is significantly larger | Moderate |
| Partial coverage on both | Could survive on one income but with sacrifices | Moderate |
| Coverage on one spouse only | One income truly covers all obligations | Lower |
| Skip entirely | Net worth exceeds 10x annual spending | Zero |
A worker earning $100,000 can typically get a benefit of about $5,000 per month. Someone earning $300,000 can get about $13,500 per month. The premium for individual coverage runs about 1 to 3% of your annual income, so a $100,000 earner might pay $83 to $250 per month.
For many dual-income couples, the sweet spot is maxing out coverage on the higher earner and carrying enough on the lower earner to cover the gap between the higher earner's income and total household obligations. That way, if either person becomes disabled, the math still works.
If you are self-employed, the calculation gets more complicated because your income may fluctuate and you do not have employer coverage to build on.
What about homemakers?
If one spouse does not earn income, they cannot get individual disability insurance. There is no income to replace, so no insurer will write a policy. Some carriers like Guardian offer a spousal rider if the working partner has at least $4,000 per month in individual disability coverage, but these riders are limited. Benefit terms are 5 to 10 years, eligibility ages are 18 to 45, and the payout is a fraction of the working spouse's coverage.
This matters because the economic value of a homemaker is real. If the stay-at-home spouse becomes disabled, the working spouse now needs to pay for childcare, house cleaning, meal preparation, and everything else that partner handled. Those costs come directly out of the working spouse's income.
The working spouse in this scenario absolutely needs their own disability insurance. They are the only income source, and losing it means the entire household has zero earnings. This is the one situation where the answer is simple and absolute.
The numbers that should end the debate
Here is what the data says.
67% of American workers have no long-term disability insurance at all (Council for Disability Awareness). At age 42, you are 3.17 times more likely to become disabled than to die (National Safety Council). The average long-term disability claim lasts 34.6 months, which is nearly three years of lost income.
A 25-year-old has a 58% chance of experiencing a disability lasting 3 months or longer before age 65. Even at age 40, that probability is still 45%. These are not rare events. They are common enough that nearly half the population will experience one.
The top causes are not dramatic accidents. Musculoskeletal problems like back injuries account for 29% of long-term disability claims. Cancer is 15%. Mental health conditions are 9%. Illness causes disability at a rate of 10 to 1 compared to injuries. Your spouse's income does not prevent a herniated disc or a cancer diagnosis.
Your spouse working gives your household more financial cushion than a single-income family. But cushion is not a plan. The gap between "we could probably manage" and "we actually ran the numbers" is where families go broke.
Fill in the table from earlier in this article with your real numbers. If your spouse's take-home does not cover your fixed costs with room to spare, the answer is clear. A policy costs 1 to 3% of your income. Being wrong costs everything else.