Use Form 8829 to figure the allowable expenses for business use of your home on Schedule C (Form 1040 or 1040-SR) and any carryover to 2020 of amounts not deductible in 2019.
Open Worksheet: Form 8829—Business Use of Home
You must meet specific requirements to deduct expenses for the business use of your home. Even if you meet these requirements, your deductible expenses may be limited. Part IV is used to figure any allowable carryover of expenses that are more than the limit.