Your total tax liability with that amount of adjusted gross income would be $11,500 and it would be offset by the $4000 of child tax credit and $7500 of electric vehicle credit. How much you get back as a refund or owe would depend on how much tax was withheld during the year. If your itemized deductions were more than the standard deduction, it would increase the amount of adjusted gross income you would need to qualify for the full amount of credits. You are correct that the total of property tax and state income tax or sales tax deduction is limited to $10,000. There is no specific limit on mortgage interest deduction but there are limits on how much mortgage debt you can deduct the interest on.
