Most individual health policies go by calender year. Some companies offer a feature that allows any part of your deductible satisfied in the last 3 months of the year to roll over to the following year. It is important to know what your policy offers, since there could be some variation depending on your policy.
A deductible reset means you start a new deductible. Most plans follow a calendar year deductible but some (very few) will have a plan year deductible.
When you transition to a new calendar year (or plan year if your plan is written that way) you must start accumulating a new deductible.
Agent Owner, Gilmore Insurance Services, Marysville, Washington State
A deductible resets one of two ways. Either by Calender year (Jan 1st) or if the plan calls for it, when the plan renews. Depending on the plan, some allow for last quarter monies paid towards a deductible to be carried forward into the new plan year to count towards the new plan year.
When you transition to a new calendar year (or plan year if your plan is written that way) you must start accumulating a new deductible.