If you are an employee, work clothes are a job-related expense.
Up to tax year 2017, job-related expenses were deductible as an itemized deduction subject to the 2% of AGI floor.
Under the Tax Cuts and Jobs Act, the itemized deductions for job-related expenses subject to the 2% of AGI floor are suspended for expenses incurred after December 31, 2017 through 2025.
Therefore, your work clothes are no longer deductible for tax year 2019.
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Work clothes are no longer a deductible expense on a federal tax return for employees who receive a W-2. Some states allow a deduction.
If you are an independent contractor who is self employed, certain types of clothing are a deductible expense. See this TurboTax article: https://turbotax.intuit.com/tax-tips/jobs-and-career/how-to-use-work-clothes-as-a-tax-deduction/L59P...