A senator from South Boston delayed action Monday on a controversial, time-sensitive Boston property tax reclassification bill, which is now on ice until after the deadline for action recommended by Boston Mayor Michelle Wu.

Boston Mayor Michelle Wu’s controversial plan to raise commercial tax rates hit another snag on Beacon Hill Monday, when it was blocked by a member of the Senate, with the City Council’s annual tax-rate-setting hearing bearing down the next day.

Sen. Nick Collins of South Boston used a procedural maneuver to delay a vote on the controversial and time-sensitive Boston property tax bill until the Senate meets again on Thursday. Boston Mayor Michelle Wu says the bill is necessary to prevent a major price hike for residential taxpayers.

Mayor Michelle Wu's deal with the business community to stop property taxes from spiking for Boston homeowners could be in jeopardy after a South Boston lawmaker threw the brakes on the proposal at the State House.

The State Senate is set to take up a proposal by Boston Mayor Michelle Wu to change the way property taxes are calculated in the hope of heading off a dramatic increase in residential rates. A compromise “residential tax relief” plan worked out between Wu,