Is it for when you will register a vehicle in New York at a DMV office?
No.
Unfortunately, no relevant information is found.
What do I need to do when I've bought my car from some guy online?
In this situation, both you the buyer and the seller must complete the Statement of Transaction {Sales Tax Form} at NY State Department of Tax and Finance DTF-802. Then you will bring the form to a DMV office where they will calculate and collect the sales tax, and also issue a sales tax receipt.
Can i get online estimates for passenger and commercial vehicles?
Yes, you can get online estimates for both passenger and commercial vehicles.
Do you know what Proof of Sales Tax Payment or Sales Tax Exemption is, or what the selling price is? If I purchased a car from a New York car dealer, what other documents do I need to bring?
In that case bring the dealer 's bill of sale that shows that you paid NY State sales tax.
Ok, one more thing, what should I do if I rent a vehicle from a dealership in another state, should I register it or will they do the whole process?
The dealer normally registers the vehicle for you by providing all your proofs and your registration application to the DMV. In this case, you don't need to do anything more.
I was wondering if when I register this vehicle, will I have to pay any additional taxes?
Yes, you probably also will need to pay county use tax when you register your vehicle.
I've heard about exemptions or deferrals of sales tax, who's eligible for that?