The short answer
The best time to buy disability insurance is early in your career, in your 20s or 30s, when you are youngest, healthiest, and cheapest to insure. Rates rise with age, and health conditions that develop over time can raise your premium, add exclusions, or make coverage hard to get. Buying young lets you lock in a low rate and a clean health rating, and options like a future-increase rider let you add coverage later as your income grows, without new medical underwriting.
So the timing rule mirrors other insurance: sooner is cheaper and easier, and waiting risks both a higher rate and your insurability.
Why young and healthy wins
A young professional with no health issues gets the best rates and the fewest exclusions, and locks in coverage before a back problem, a mental health diagnosis, or another condition could complicate underwriting. The long horizon also means decades of income to protect — arguably the time protection matters most. Our guide to life insurance rates by age shows the same age-and-health dynamic for life insurance.
The advantage of buying young is twofold: the lowest price and the cleanest health record, both of which erode over time.
How to lock it in early
Buy a policy sized to your current income with a strong definition, and add a future-increase option so you can raise the benefit as you earn more without re-qualifying medically. That way an early purchase grows with your career instead of being outgrown. Even if money is tight early on, a modest policy now beats an expensive or unavailable one later. Our foundational guide to what disability insurance is covers building the coverage.
The takeaway: buy disability insurance young to lock in low rates and a clean health rating, and use a future-increase option to grow it with your income.
Frequently Asked Questions
When should I buy disability insurance?
Early in your career, in your 20s or 30s, when you are youngest, healthiest, and cheapest to insure. Rates rise with age and new health conditions can raise your premium or add exclusions.
Why is it cheaper to buy disability insurance young?
A young, healthy applicant gets the lowest rates and fewest exclusions and locks in coverage before conditions develop that could complicate underwriting or raise the premium.
How can I grow my coverage after buying young?
Add a future-increase option, which lets you raise the benefit as your income grows without new medical underwriting, so an early policy keeps pace with your career.
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