You are currently insured under what is referred to as an old portfolio health plan. Health insurance companies will often introduce new plans in an attempt to keep up with the demands of a changing industry. The current trend seems to be more health plans with higher deductibles, greater coinsurance amounts and reduced maimum benefit amounts on certain covered services, like prescription drug coverage. When an insurance company makes a rate change, they will look at the loss ratio for a particular health plan in their portfolio and attempt to adjust the rates on that particular plan in order to cover the projected claims from members on that plan. So, when you are on a health plan that is no longer offered by your insurance company, there are no new members joining the plan that help keep the claims ratio low on that plan. So, after time, the only people still covered under that particular plan are people that are unable to switch insurance companies due to a pre-eisting medical condition. So, it is likely that the plan you are on is more inclined to suffer a greater rate increase each time the insurance company modifies their rates. Has your insurance company given you the option to switch to another plan? Usually, when you receive notice of a rate increase, you should also be provided with options to move to a different health plan with that insurance company. The alternative plans that might be offered to you would likely be a plan with a higher deductible and a reduction in benefits. It might be worth considering a reduction in benefits in order to obtain a substantially lower monthly premium.