Hi @Spudmcat
Congratulations on the success of your business. If you use your car only for business purposes, you may deduct its entire cost of ownership and operation (subject to limits). However, if you use the car for both business and personal purposes, you may deduct only the cost of its business use..
https://www.irs.gov/taxtopics/tc510
I would recommend using the Tax Caster calculator to enter in your anticipated income and deductions so you can estimate how much money you should pay in your quarterly estimates.
https://turbotax.intuit.com/tax-tools/calculators/taxcaster/
Hope this helps! 🙂
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"