The Nassau County Legislature is expected to vote Friday to overturn County Executive Ed Mangano's veto of their amended budget plan.

At the heart of the debate is a 1.2 percent property tax hike. The debate began last month when Mangano included the tax hike as part of his proposed 2016 budget. All 19 Legislature members said at the time that they would not support a tax increase.

Lawmakers came up with their own plan that removed the tax increase and submitted it to Mangano, who vetoed it.

Mangano's office says that declining sales tax revenue and increasing health care costs for employees are to blame for the deficit.

The tax hike would cost about $23 per household, and the county executive's office says that money would be reimbursed to any homeowners making less the $500,000 a year through the state's tax cap incentive.

Despite that, the leader of the Legislature's Democrats says his members will join the Republicans in their vote to override the veto.

The Nassau County Interim Finance Authority says that even if the tax hike stands, it still will not provide enough revenue to adequately address the county's budget shortfall.

Mangano's office tells News 12 that if the Legislature does move forward with its veto override, the executive will meet with NIFA.

NIFA has said it is considering how it would take control of the county's finances, if the board deems it necessary.