Wartime veterans get a 15 percent reduction in the assessed value of their primary residence. If you served in a combat zone or received an expeditionary medal you get another 10 percent, and if you have a service-connected disability you get a further reduction equal to half your disability rating. Each city, town, village, county and school district decides for itself whether to offer this exemption and what maximum limits apply.
Apply to the assessor, or the city or town clerk, where the property is located, not to the state. Ask them first whether your taxing jurisdiction has adopted this exemption, what the local maximum limits are, and what the filing deadline is.
Official proof of honorable service and of service during a qualifying wartime period, and your VA disability documentation if you are claiming the disability reduction.