Complete your amended return as if you are filing the return for the first time. Submit all the forms relevant to the information in your amended return.The court has placed the most commonly used forms on line as a resource. Please be advised that the forms detailed below are intended to be a guide. This form is used to amend a New York State nonresident or partyear resident's income tax return for the specific tax year noted on the form. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County. Persons desiring to register as domestic partners shall file a duly executed and notarized affidavit of domestic partnership in the office of the Town Clerk. Welcome to the Town of Islip Receiver of Taxes homepage. This site has been completely revamped to give taxpayers a more user-friendly experience. The landlord does not fill out this form.