Rhode Island Property taxes in administered entirely at the local level. Each city or town sets its own tax due dates, its own tax rates, and its own system of property assessment. However, there are some state guidelines that every locality must follow.
Property taxes must be based on the market value of a property. To that end, cities and towns are required to fully revalue the property in their district once every nine years, and to do statistical updates to assessed value every third and sixth year. Homeowners who disagree with their assessed value have 90 days from the date their first payment is due to file an appeal with their local assessor.