If you are a resident of California and have incurred covered medical expenses in the past 12 months, you may be able to claim those expenses on your state income tax return. To qualify, the medical expenses must have been for yourself, your spouse, or your dependents. They must also have been incurred while you were living in California and during the 12-month period preceding the filing of your state income tax return. You will need to provide documentation of your covered medical expenses. This can include receipts, bills, or other documents that prove that the costs were actually incurred and were not reimbursed by a third party. If you are eligible to claim covered medical expenses on your state income tax return, it is important to file a claim as soon as possible. If you do not file a claim within three years after the due date of your state income tax return, any unpaid taxes will be considered delinquent and may result in penalties and interest charges. ..