A Real Estate sales person can tell you what the taxes on a property are. They should have documents to show this to you. They can explain what the assessed value of the property is and that what you are being charged is based on a percentage of the assessed value of the property.
I'm not entirely sure of your question Annette. Are you asking which township in Sullivan County, NY has the lowest taxes? If so, it is Neversink Township. NYC subsidizes taxes here because of the water shed. Your tax bracket is tied into Federal and State income taxes you pay. Your tax bracket depends on your adjusted taxable income. A portion of the taxes paid to the township and school district are tax deductible. Hope this helps.