A health insurance deductible is the amount you pay out-of-pocket for healthcare services before your insurance plan begins to pay its share. For example, if your deductible is $1,000, you must pay the first $1,000 of your medical expenses. After you meet your deductible, your insurance will start covering a portion of your costs, typically involving copayments or coinsurance for further services. Deductibles will vary by plan.