Cook County · New Trier Township
Accounting & Tax Services in Winnetka, IL
Accounting, controller and tax work for Winnetka businesses, from a practice in Wilmette.
Winnetka shares New Trier Township with Wilmette, Kenilworth and Glencoe, so it runs on the same Cook County reassessment cycle as the practice's home village.
Registering a business in Winnetka
Every village on the North Shore sets its own rule, and they diverge more than most owners expect.
Winnetka runs a business registration rather than a licence in the usual sense, handled through the village's Economic Development Coordinator. The village states the purpose plainly: keeping accurate information about the local business community, and making sure public safety officials have correct contact details for commercial tenants in an emergency.
Winnetka's own guidance → · Requirements and fees change; confirm with the village before you rely on this.
Property assessment in Winnetka
Worth knowing before you assume the rules are the same everywhere in the north suburbs. They are not.
Winnetka is assessed by the Cook County Assessor, and it sits in the north suburban township group — reassessed in 2016, 2019, 2022 and 2025, which puts the next one in 2028. In a reassessment year there are two chances to contest a value; in an off year, generally one. How the Cook County appeal cycle works →
Do I need a business licence to operate in Winnetka?
Winnetka runs a business registration rather than a licence in the usual sense, handled through the village's Economic Development Coordinator. The village states the purpose plainly: keeping accurate information about the local business community, and making sure public safety officials have correct contact details for commercial tenants in an emergency.
Which county and township handle assessment for a Winnetka business?
Winnetka is in Cook County, New Trier Township. That decides who values your property, which appeal window applies, and who you call first — and it is not the same answer a few miles away.
Also serving
Neighbouring communities we work in regularly — each with its own registration rule.