An IADL, or instrumental activity of daily living, is a task that allows a person to live independently in their community. IADLs include things like managing money, cooking meals, doing laundry, and getting around town. These are more complex than basic self-care tasks, and losing the ability to do them is often one of the earliest signs that an older adult needs support at home or a change in living situation.
The 8 Standard IADLs
Healthcare providers and social workers typically assess eight specific IADLs, based on a widely used tool called the Lawton scale. Each one reflects a skill that requires planning, organization, and the ability to navigate the world beyond your own body:
- Making phone calls: Using a phone to reach others, whether for social contact or emergencies.
- Grocery shopping: Getting to a store, selecting items, and paying for them.
- Preparing meals: Planning what to eat and cooking food safely.
- Housekeeping: Keeping a home reasonably clean and orderly.
- Doing laundry: Washing, drying, and putting away clothes.
- Using transportation: Driving, taking public transit, or arranging rides.
- Taking medications: Managing the right doses at the right times.
- Handling finances: Paying bills, budgeting, and using bank accounts or credit cards.
On the Lawton scale, each task is scored as either independent or dependent, producing a total from 0 (fully dependent) to 8 (fully independent). A declining score over time tells clinicians and families that someone’s functional abilities are slipping.
How IADLs Differ From Basic ADLs
You’ll often see IADLs mentioned alongside ADLs (activities of daily living), and the distinction matters. Basic ADLs are the physical essentials of survival: bathing, dressing, eating, using the toilet, and moving from one spot to another (like getting from bed to the bathroom). These are sometimes called physical ADLs because they center on your body’s most immediate needs.
IADLs sit one level above that. They require more complex thinking, organization, and interaction with the outside world. A person who can still shower and dress independently but can no longer manage their bills, cook safely, or remember medications is losing IADLs while retaining basic ADLs. This pattern is extremely common in early cognitive decline and is a key reason the two categories are tracked separately.
Why IADL Decline Is an Early Warning Sign
IADL problems often appear before basic ADL problems, making them one of the first measurable signs of cognitive change. Research on mild cognitive impairment (MCI), a condition that sits between normal aging and dementia, shows that people with MCI who also have IADL deficits face a higher risk of progressing to dementia than those with MCI alone. In practical terms, this means that trouble with finances, medication management, or meal preparation can be more than just aging. It can signal that the brain’s ability to plan, sequence tasks, and stay organized is declining in a meaningful way.
This is why doctors, geriatric specialists, and neuropsychologists often ask detailed questions about IADLs during cognitive evaluations. A family member noticing that a parent has stopped paying bills on time, is eating only cereal because cooking feels overwhelming, or has gotten lost driving a familiar route is providing clinically useful information, not just anecdotal concern.
How IADLs Affect Care Decisions
IADL limitations are a practical trigger for deciding what kind of help someone needs. A person who struggles only with IADLs, like shopping, cooking, or managing money, can often remain at home with part-time help: a home aide a few hours a week, a meal delivery service, or a family member handling finances. These supports address the specific gaps without uprooting someone’s daily life.
When basic ADLs start declining too, the level of care required increases significantly. Someone who can no longer bathe, dress, or transfer safely typically needs either a full-time home caregiver or a move to assisted living or a skilled nursing facility.
Many families use IADL changes as the starting point for conversations about safety and independence. If you’re tracking a parent’s or spouse’s abilities, looking at these eight tasks specifically, rather than relying on a vague sense that something is off, gives you a concrete framework for deciding when and what kind of help to arrange.
IADLs and Insurance Benefits
Long-term care insurance policies use ADL and IADL limitations to determine when benefits kick in. Most policies require that you need help with at least two of six basic ADLs, or that you have a documented cognitive impairment, before they begin paying. IADLs alone don’t typically trigger benefits under these policies, but they play a supporting role in documenting overall functional decline, especially when cognitive impairment is part of the claim. If you’re reviewing a policy, look carefully at which specific activities it lists as qualifying triggers, since definitions vary between insurers.