Last Updated: 5/14/2026
Residual functional capacity (often referred to as RFC), is the Social Security Administration's (SSA) way of measuring what you can still do at work (physically and mentally) on a regular, ongoing basis, given your medical conditions.
RFC plays a key role in how the SSA reviews disability claims. When you apply for Social Security Disability Insurance (SSDI), the SSA looks at your medical records and other information to understand how your medical condition affects your ability to work. They want to know how your health conditions limit your ability to handle everyday job tasks.
RFC is not a medical diagnosis. It is determined by SSA decision-makers using all the evidence in your claim, and it has a major impact on whether you qualify for SSDI benefits.
How does Social Security define residual functional capacity?
The SSA defines RFC as a measure of the most you can still do at work despite the limitations caused by your medical condition.
The RFC focuses on your ability to perform work tasks on a regular, ongoing schedule — typically eight hours a day, five days a week. The SSA focuses on how your condition affects your ability to function, not the diagnosis itself.
For example, two people may have the same medical condition but face different limitations. One person may still be able to perform certain work tasks, while another may be able to do less. Because of this, RFC focuses on how your symptoms affect your day-to-day functioning.
The goal is to turn medical evidence into a clear picture of what you can and cannot do at work.
How are physical work capabilities evaluated for residual functional capacity?
Physical RFC looks at how your condition affects common physical activities required in many jobs. These include lifting, carrying, standing, walking and sitting.
The SSA may also consider other physical abilities, such as bending, reaching and handling objects. These factors help determine what types of physical tasks you may still be able to do during a typical workday.
How are mental and cognitive limitations considered for residual functional capacity?
Mental RFC focuses on how your condition affects thinking, concentration and behavior at work.
This part of the evaluation may look at your ability to focus on tasks, follow instructions, make decisions and handle stress at work. It may also consider how well you interact with coworkers, supervisors or the public.
Things like depression, anxiety and other invisible disabilities can affect these areas and may influence how your ability to work is evaluated.
What evidence does Social Security use to determine residual functional capacity?
The SSA builds an RFC assessment by reviewing all relevant evidence in your disability claim. This may include medical records and anything about how your condition affects your daily life.
Key sources of evidence may include:
- Medical records, treatment notes, lab results, imaging studies and psychological evaluations.
- Opinions or functional assessments from doctors or other medical professionals.
- Your own description of your symptoms and daily activities.
- Observations from family members, caregivers or others familiar with your daily functioning.
Medical records often show how much a condition affects the body or mind. Medical professionals may also provide letters that explain your limitations at work. Personal reports and third-party observations can offer more on how your symptoms affect everyday activities. Together, these sources help the SSA understand what you are still able to do.
How does residual functional capacity change throughout my disability claim?
RFC may be looked at more than once during a disability claim. This can happen at the initial application stage or during an appeal stage such as reconsideration or a hearing. Each stage may produce its own RFC findings.
Because new evidence can emerge along that process, an RFC assessment may change over time. Different decision makers may also interpret the same evidence in different ways.
Earlier RFC findings may be reviewed at later stages, but they do not always determine the final outcome. Each stage looks at the full record of evidence when making their decision.
How does residual functional capacity affect my benefits decision?
The SSA looks at whether your residual functional capacity allows you to perform certain types of work. One part of this evaluation involves comparing your RFC with the demands of your past work. The SSA reviews the physical and mental requirements of your previous jobs to see whether they match your current abilities.
If past work is no longer possible, the SSA considers whether you can do any other types of work. At this stage, your functional capacity is considered along with age, education and work experience.
If the evidence shows that your RFC prevents you from doing both your past work and other substantial work, the SSA may decide you have a disability.
This is a key area where expert representation from Allsup can make a powerful difference. Our more than 42 years of experience has built a foundation of medical condition knowledge we draw from to respond as effectively as possible to medical evidence needs. Allsup studies medical trends, understands chronic medical conditions and knows how to build an accurate case for your disability claim.
