A resident finishing training earns a fraction of what they will earn a decade into practice. If they buy a disability policy now sized to today's income, that benefit will cover a shrinking share of their pay as earnings climb. The obvious fix is to buy more coverage later. The problem is what can happen to your health and your insurability in the years between.

That is the gap the future increase option closes. Its headline feature is raising your benefit without a new medical exam. Its real value is locking in your insurability before a health event, an exclusion, or a rating can limit what you are allowed to buy.

What FIO Does and How It Works

A future increase option is a rider that lets you raise your monthly benefit at predetermined intervals without new medical underwriting. To exercise it you provide current income documentation and pay the new premium; the carrier cannot decline the increase, impose new waiting periods on it, or attach new health-based exclusions. If you are within the rider's terms, the increase is guaranteed.

That turns income growth from a threat to your coverage adequacy into a planned, manageable expansion. You buy appropriately for where you are now and add coverage as you earn more, with the medical decision already settled at today's health.

The exam-free guarantee is written into the rider itself. Principal's version (its Increase Option rider, form ICC22-800) states: "This rider provides the opportunity to increase the Maximum Monthly Benefit without medical or financial underwriting." The exact wording varies by state and edition, and the issued policy governs, but that is the core promise of any future increase option: more coverage later without re-proving your health. The name varies by carrier: Guardian calls its version the Future Increase Option, Principal calls its version the Increase Option, and the other majors offer comparable benefit-increase riders under their own names. This guide uses FIO as shorthand for the whole family.

The Real Job: Locking In Insurability

The exam-free convenience is not the main reason to carry FIO. The main reason is that the coverage you can buy in the future depends on your health in the future, and health does not reliably stay clean. In Seaworthy's placed book (2026 audit), roughly 28% of policies came back from underwriting with an exclusion or a rating. That is not a fringe outcome; it is more than one policy in four. An exclusion carves a condition out of coverage; a rating raises the price for an added risk.

Increases bought through FIO are not subject to that risk, because they skip new medical underwriting. A condition that develops after you buy, the kind that might trigger an exclusion or a rating on a fresh application, cannot block or limit a FIO increase. You are effectively pre-approving your future self for more coverage while your health is still clean. For the related mechanics, see how exclusion riders work and why timing is the lever.

What Our Book Shows About FIO Adoption

The case for FIO shows up clearly in who we place it for. The median age at issue across our whole book is 36 (2026 audit), an age where income is still rising and insurability is still worth protecting, and most new policies we place include an increase feature of some kind. The professionals who benefit most are those with high underwriting-exclusion exposure, such as CRNAs at roughly 40% in our book, where locked-in insurability is worth the most.

Why FIO Is an Early-Career Decision

Buying coverage equal to your current income is the sensible, affordable choice early on, but it leaves a gap that widens as your income grows. Closing that gap later without FIO means a new medical exam and fresh underwriting scrutiny at the very moment you are highest-paid and most dependent on income protection, and most likely to have accumulated a health history. Residents and early-career professionals are the clearest case for the rider, because they have both the steepest income trajectory and the most insurability left to protect; increase rights are also where the five carriers' resident programs differ most, which our resident program comparison lays out carrier by carrier. The risk being locked against runs the whole length of a career; the Social Security Administration states it plainly in its consumer guide: "Studies show that a 20-year-old worker has a 1-in-4 chance of developing a disability before reaching full retirement age."

FIO decouples coverage from current income. You can buy what fits today and expand systematically, without ever again explaining a health change to underwriting for the covered increases.

What FIO Does Not Do

FIO removes the medical barrier to increasing coverage. It does not remove the income and occupation-class limits on how large your benefit can be. Individual issue limits decline as income rises (the replacement ratio is not a flat 60%; a professional earning $500,000 might be limited to roughly a $16,900 monthly benefit), and each occupation class has its own caps. If a carrier's class limit for your occupation is reached, FIO will not push you past it. What it guarantees is that medical history will not be the thing standing in your way.

How to Plan Increases

Map your FIO use to your expected income trajectory. If you anticipate steady annual income growth, scheduling increases that roughly track that growth keeps coverage aligned with earnings. For professionals with uneven income growth, it is worth buying slightly more initial coverage than strictly needed and exercising FIO as income firms up. For predictable trajectories, such as salaried physicians or attorneys on a partnership track, FIO can be the entire mechanism for matching coverage to growth without repeated underwriting.

How We Approach It

Because we are independent and compare all five carriers on contract language rather than price alone, FIO terms are part of the comparison from the start, since they vary in increase size, frequency, age limits, and how income is documented at exercise. For a young buyer, we treat FIO as close to mandatory and compare which carrier gives the most usable increase room over the next ten to fifteen years.

To see how the carriers line up for your situation, start with a quote comparison across all five. For the related decisions, read our pages on when to buy, exclusion riders, and the COLA rider, which grows your benefit during a claim while FIO grows your coverage before one. These guides, with the rest of the series, live in the education hub.

Frequently Asked Questions

What is a future increase option (FIO)?
A future increase option is a rider that lets you raise your monthly disability benefit at set intervals without going through new medical underwriting. When you exercise it, you supply income documentation and pay the additional premium, and the carrier cannot decline the increase or add new health-based exclusions for it. It converts future income growth from a coverage problem into a planned, guaranteed expansion.
Why is locking in insurability the real point of FIO?
The benefit you can buy later depends on your health later, and health is not guaranteed to stay clean. In our placed book (2026 audit), roughly 28% of policies came back with an exclusion or a rating, meaning a health finding either carved out a condition or raised the price. FIO sidesteps that: increases bought through the rider are not subject to new medical underwriting, so a condition that develops after you buy cannot block or limit them. You are locking in your insurability while it is still clean.
Who should prioritize FIO?
Early-career professionals, especially medical residents and fellows, get the most value. Their income will rise sharply, but buying a full benefit on a resident's income is not practical, and waiting until they earn more exposes them to the underwriting risk above. FIO lets them buy an appropriate benefit now and expand it as income grows, with the medical decision locked in at today's health. Most new policies we place include the option, and early-career professionals are exactly who it serves best.
How often can I increase, and is there a cap?
Terms vary by carrier. Most riders allow increases at set intervals, cap the number of increases, and cap the aggregate additional benefit, with availability ending at a certain age. Each increase must also fit the carrier's income and occupation-class limits at the time you exercise it. You will not face new medical scrutiny, but the size of the increase is still bounded by how much income you can document and your occupation class. A current quote is the only reliable read on the specific terms.
What does FIO not do?
FIO removes the medical barrier to increasing coverage; it does not remove the income or occupation-class limits on how large your benefit can be. Individual issue limits decline as income rises (the replacement ratio is not a flat 60%), and each occupation class has its own caps. If your income outpaces what FIO and those limits allow, you would need to apply for separate coverage, which would mean new underwriting. FIO covers predictable income growth within those limits, not unlimited expansion.