Boston Mayor Michelle Wu’s bullying tactics and dishonest botching of her commercial tax hike plan have backfired badly and the home rule petition is now in serious jeopardy.

Wu’s administration deliberately withheld important information on the impact of the tax plan from city councilors and legislators, and the home rule petition is on hold in the state Senate while business leaders rethink their support.

State Sen. Nick Collins and City Councilor Ed Flynn did the right thing in protecting commercial taxpayers, and in reaction Wu lobbed a weak bomb in the Boston Globe about Collins taking campaign money from developers. Wu also takes campaign donations from the same developers.

You can’t conceal campaign contributions. Yes, Collins was an advocate for the business community and they supported him.

So what? Instead Wu tries to smear him by planting a story about developer contributions, which Wu also accepts.

Wu has lost a lot of credibility with taxpayers and business leaders on this botched deal, which is not insignificant. The deal went south because she wasn’t honest.

It shows the arrogance of the mayor, who is known for pushing through her interests without much concern for the public process, smearing her opponents and then smiling while she lights the city Christmas tree.

Her original deal with the business community to back the plan seemed like good politics at the time and a solid win for the first-term mayor.

But now that it’s been revealed the impact on residential taxpayers won’t be as dire as Wu predicted, business leaders are revolting and thinking of withdrawing their support of the plan.

How does the city’s assessing commissioner, Nicholas Arinello, who refused to divulge the annual tax spike for homeowners for next year in a hearing with the council, keep his job? Arinello should be canned immediately.

The mayor, meanwhile, refuses to heed recommendations from her critics to cut the city’s $4.6 billion budget that grew 8% this fiscal year, and in fact keeps spending millions more on bike lanes, grants and climate initiatives.

Commercial taxpayers dealing with a sagging real estate landscape are taking it on the chin already and would have the most to lose under Wu’s tax hike.

Flynn was the only councilor to oppose the home rule petition on the initial vote, and was portrayed by Wu and critics as in the tank for business interests.

Now Flynn and other Wu critics like Councilor Erin Murphy are looking good for demanding answers from the Wu administration before green-lighting the home rule petition. Flynn is calling for a new hearing based on the new information from the city.

“I think city councilors might want to reevaluate their vote based on the new numbers we have, to do our due diligence and ask difficult questions of the city even when it’s politically incorrect,” Flynn said in an interview.

It’s also a rare occasion when the Legislature is acting responsibly by slow-walking Wu’s plan and keeping it from getting broomed through.

Murphy said Wu’s dishonesty “erodes trust in government” and noted that some city council members didn’t even show up for the hearing on the home rule petition.

“There was definitely I believe (an attitude of) ‘let’s push this through’ before the numbers were actually shared,” she said.