An explanation of and the formula to calculate Ontario Land Transfer Tax ("LTT") can be found at: https://www.fin.gov.on.ca/en/tax/ltt/

Some ingenious people have created calculators that automatically calculate LTT that only require you to enter the sale price.  Note that if the property is located in Toronto, the Toronto Land Transfer Tax also applies.  A useful calculator can be found at: https://wowa.ca/calculators/land-transfer-tax

An explanation of and the information needed to calculate Ontario Estate Administration Tax ("Probate") can be found at: https://www.ontario.ca/page/estate-administration-tax