If you run your business from home, you might be able to claim a home office deduction.
The Home Office Deduction: Actual Expenses vs. the Simplified Method

If you run your business from home, you might be able to claim a home office deduction.
If you’re self-employed and run your business from home, you might be able to claim deductions for home office expenses against your business income.
A Simplified Employee Pension (SEP) can still be set up for 2019, and you can make contributions to it that you can deduct on your 2019 income tax return.