ADLs and IADLs Explained: The 7 Activities of Daily Living

When a nurse, a care manager, or an insurance adjuster asks how your parent is doing, they are almost never asking for a general impression. They are quietly running through a checklist called the activities of daily living, or ADLs, and a second list called the instrumental activities of daily living, or IADLs. Those two lists decide a great deal: whether a long-term care insurance policy pays out, whether a Medicaid program approves in-home hours, what level of care an agency recommends, and how many hours a week a family realistically needs to cover.

This guide explains both lists in plain language, shows how professionals score them, and walks through what to do once you know where your family member stands. If you would rather answer the questions directly and get a result, the free Care Needs Assessment walks through the same items a care manager would ask about.

What Are Activities of Daily Living?

Activities of daily living are the basic self-care tasks a person has to manage to live independently. They were first formalized by Dr. Sidney Katz in the 1960s, and the resulting Katz Index is still the backbone of how care needs get measured today. The key idea is that these are not chores or hobbies. They are the irreducible physical tasks of taking care of a body.

The 7 Activities of Daily Living

Most clinical sources list six core ADLs, and many care planners add ambulation as a seventh because mobility drives so much of the rest.

• 1. Bathing. Getting in and out of a tub or shower, washing all parts of the body, and drying off safely. This is usually the first ADL to slip, partly because it is physically demanding and partly because a wet bathroom is the most dangerous room in the house.
• 2. Dressing. Choosing appropriate clothing and putting it on, including fasteners, buttons, zippers, socks, and shoes. Difficulty here often shows up as the same outfit worn several days in a row.
• 3. Toileting. Getting to and from the toilet, managing clothing, and cleaning oneself afterward. Families frequently underreport this one out of respect for privacy, which distorts the whole assessment.
• 4. Transferring. Moving between positions and surfaces: bed to chair, chair to standing, standing to the car. Grab bars, bed rails, and transfer belts live here.
• 5. Continence. Controlling bladder and bowel function. Occasional accidents are not the same as loss of continence, but a pattern that requires scheduled help does count.
• 6. Eating. Getting food from a plate into the mouth and swallowing it. Note that this is not cooking. A person who cannot cook but can feed themselves is independent in this ADL.
• 7. Ambulating. Walking or moving around within the home, with or without a cane or walker. Many assessments fold this into transferring, but tracking it separately catches decline earlier.

What Are IADLs?

Instrumental activities of daily living are the more complex tasks that let someone run a household and a life. They lean more on thinking, planning, and judgment than on physical ability, which is why IADLs are usually the first to erode in early dementia while ADLs stay intact for years afterward.

• Managing money. Paying bills on time, balancing accounts, avoiding scams. Unopened mail and unpaid utilities are classic early signals.
• Managing medications. Taking the right dose at the right time, refilling prescriptions before they run out. A medication schedule planner often buys a family months of extra independence here.
• Shopping. Getting to a store, choosing what is needed, and getting it home.
• Meal preparation. Planning, cooking, and storing food safely. Spoiled food in the fridge or a scorched pan is worth paying attention to.
• Housekeeping and laundry. Keeping the home clean enough to be safe and clothes clean enough to wear.
• Transportation. Driving safely or arranging rides, including buses and ride services.
• Communication. Using a phone, answering mail, keeping up with appointments and family.

ADLs vs IADLs: The Difference That Matters

The simplest way to hold the distinction is this: ADLs are about caring for your body, IADLs are about running your life. Someone can be fully independent in every ADL and still be unable to live alone safely because the IADLs have collapsed. The reverse is far less common.

The practical difference is in what each one triggers.

• IADL loss usually means help, not hands-on care. A few hours a week for groceries, rides, bills, and medication setup often covers it. This is where families start, and it is the least expensive stage of care.
• ADL loss usually means personal care. Once bathing, toileting, or transferring needs another person, the hours climb, the schedule stops being flexible, and the cost profile changes substantially. Our care hours estimator models what that shift looks like week to week.
• Benefits key off ADLs specifically. Most long-term care insurance policies pay only when a licensed practitioner certifies that the person cannot perform at least two of the six ADLs without substantial assistance for at least 90 days, or has severe cognitive impairment. IADL loss alone almost never triggers a payout.

How Professionals Score ADLs

Two scales come up over and over. The Katz Index of Independence in Activities of Daily Living scores each of the six core ADLs as either independent (1) or dependent (0), for a total of 0 to 6. Six means full function, four means moderate impairment, two or less means severe impairment. It is fast and blunt, which is why intake nurses like it.

The Lawton Instrumental Activities of Daily Living Scale covers the eight IADLs and is scored 0 to 8. It is more sensitive to early decline, which makes it the better early-warning instrument for cognitive change.

Both scales share a limitation worth understanding: they measure whether a task gets done, not how hard it was. A person who takes 45 exhausting minutes to dress still scores as independent. That is why a good assessment always adds context about effort, safety, and how often things go wrong.

How to Assess Honestly at Home

Families consistently overestimate independence, for understandable reasons. The person being assessed often minimizes problems, and adult children fill in gaps without noticing they are doing it. A few habits make a home assessment much more accurate.

• Observe, do not ask. "Can you still shower on your own?" gets a yes almost every time. Watching what actually happens over a weekend visit tells the truth.
• Count your own help. Every task you quietly took over is a data point. If you have been paying their bills for eight months, money management is not independent.
• Look for physical evidence. Expired food, stacked mail, pill bottles with the wrong count remaining, bruising, laundry piles, a car with fresh scrapes.
• Rate the last two weeks, not the best day. Function fluctuates. Assessments should reflect the typical week.
• Write it down with dates. A short log is enormously useful for a doctor, an insurer, or a Medicaid caseworker later.

What Each Level of Need Usually Costs

Care needs translate fairly predictably into hours, and hours translate into cost. These are general national patterns; local rates vary widely, and California in particular runs higher than the national median.

• IADL support only (0 to 2 ADL deficits): roughly 4 to 12 hours a week. Errands, meal prep, medication setup, transportation, companionship.
• Early ADL support (2 to 3 deficits): roughly 15 to 30 hours a week. Bathing and dressing assistance on a set schedule, plus continued IADL help.
• Substantial ADL support (4 or more deficits): 40 or more hours a week, often including overnight coverage. At this stage families are usually comparing in-home care against assisted living or a memory care setting.

To put real numbers against your situation, the home care cost calculator models hourly, overnight, and around-the-clock arrangements, and the care setting comparison lays in-home care next to assisted living and nursing facility costs.

Why the ADL Count Shows Up on Every Form

The number of ADL deficits is the single most consequential figure in senior care paperwork.

• Long-term care insurance. Two of six ADLs, certified in writing by a licensed practitioner within the past 12 months, is the near-universal benefit trigger. Cognitive impairment is the alternative path.
• Medicaid home and community based services. State programs, including California's In-Home Supportive Services, assess ADL and IADL need to set the authorized hours per month.
• Medical expense tax deductions. The IRS uses the same two-of-six ADL standard to define "chronically ill" for deducting qualified long-term care services. See our guide on whether home care costs are tax deductible.
• Veterans Aid and Attendance. Eligibility rests heavily on documented need for help with daily activities.
• Assisted living pricing tiers. Communities set their monthly care fee by ADL level, which is why two residents in identical apartments can pay very different amounts.

What to Do After You Have the Picture

Knowing the ADL and IADL count is the beginning, not the conclusion. A reasonable sequence looks like this.

• Get a clinical certification in writing. Ask the primary care physician to document the specific deficits and the expected duration. Without this, benefit applications stall.
• Address safety before staffing. Many early ADL problems are environmental. Grab bars, a shower chair, better lighting, and removing throw rugs can restore independence in bathing and transferring outright. Our home safety checklist and fall risk screening cover the highest-yield changes.
• Match hours to the actual deficits. Care hours should map to specific tasks at specific times, not a vague block of coverage.
• Reassess every three to six months, and after any hospitalization. ADL status after a hospital stay is frequently worse than before it, and the drop is often reversible with prompt therapy.

Common Misunderstandings

"Cooking is an ADL." It is not. Eating is an ADL; meal preparation is an IADL. Insurers apply this distinction strictly.

"Using a walker means dependent." No. Independence with an assistive device still counts as independent. Dependence means another person is required.

"Cognitive decline does not count without physical decline." Wrong, and expensively so. Severe cognitive impairment requiring substantial supervision is an independent qualifying path for most insurance policies and for the IRS definition, with zero ADL deficits required.

"One bad ADL is enough." Usually not for benefits. Most triggers require two. But one deficit is absolutely enough to justify getting help, and waiting for a second is how families end up in crisis planning after a fall.

Where to Start

If you are early in this process, run the Care Needs Assessment first. It walks through both lists, flags which deficits are present, and suggests a realistic level of care. From there the care hours estimator and cost calculator turn that picture into a weekly schedule and a monthly budget you can actually plan around.

Medical disclaimer: This article is educational and is not medical, legal, or financial advice. Functional assessments used for insurance, Medicaid, or tax purposes must be performed and documented by a licensed health care practitioner.