The Suffolk County Industrial Development Agency has given final approval to $17 million in tax breaks for Broadridge Financial Solutions Inc., one of several efforts to keep the company from moving more than 1,500 jobs out of state.

The IDA board voted unanimously last week to grant the tax aid over a 12-year period.

“At a time when many businesses are facing difficult challenges, helping businesses retain employees is of paramount importance to Suffolk’s economy,” County Executive Edward P. Romaine told Newsday on Wednesday.

Broadridge is a public company that functions as Wall Street’s back office by delivering more than 7 billion documents to shareholders each year and processing trillions of dollars in stock trades each day. Securities filings show the company reported a profit o

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