Consider hiring an accountant or tax attorney.
They can give you guidance on strategies you should consider and other tax advantages for self-employed contractors.
Confirm if you’re subject to state tax.
ADP lists all the details of 2019 state taxes.
Pay your taxes quarterly.
IRS Form 1040-ES shows you how to do this.
Don't forget per diems and stipends count as taxable income.
Most self-employed taxpayers may be able to deduct health insurance premiums.