Employees cannot deduct any unreimbursed employee business expenses in 2018 through 2025. However, you may be eligible for certain “above-the-line” deductions that can be taken without itemizing, such as contributions to a traditional IRA and to a health savings account. Check the IRS instructions for eligibility to make these contributions.
On Form 1040X, you may file an amended return within a three-year period to claim a refund or correct a mistake made on an original or previously amended return.