i bought a car for $200, how much will i have to pay to switch it into my name? in ontario?

As the new owner, u must register ur used vehicle within six days of the sale. Here is how:

1. Bring the Used Vehicle Information Package & the vehicle permit with the completed Application for Transfer to a Driver & Vehicle Issuing Office
2. Pay the retail sales tax. At the time of the transfer, the Driver & Vehicle Licence Issuing Office collects the tax. The amount of tax is based on the purchase price or the wholesale value, whichever is greater
3. Pay the licensing / fees for plates & permit
* Trailer plate & permit = $35
* Passenger, Commercial, Motorcycle & Moped Licence Plates & permit = $20
* Attaching Plates u already own = $10
* To validate a plate, the plate holder must pay for the validation sticker, which is calculated from the date of the vehicle transfer to the expiry date of the licence plates.
* Transfer fee for a snowmobile is $6 & the annual validation is $15
4. Present proof of insurance (if u r going to put plates on the vehicle)
5. Get a Safety standards certificate if the vehicle will be plated & operated on the roads. This is not required for trailers or mopeds or off-road vehicles or snowmobiles.
6. If ur vehicle is registered, plated & in the Drive Clean program, show the vehicle emissions report. To find out if ur vehicle needs to pass an emissions test, call the Ministry of the Environment’s Drive Clean Call Centre:
toll free: 1-888-758-2999 or
visit Drive Clean
7. If this is the first time u have registered a plate or vehicle with this ministry, present proof of identify (verifying legal name, date of birth & signature).
8. If u r registering plates that u already have, bring the plate portion of ur vehicle permit with u to the Driver & Vehicle Issuing Office

See site below for more details.