HARRISBURG — Gov. Tom Wolf’s office said Friday it had secured the support necessary to pass major tax legislation in the Republican-controlled House of Representatives in a crucial step toward ending a five-month budget stalemate that has crippled some social service agencies.

Wolf’s press secretary Jeff Sheridan said Friday morning that the office was confident that forthcoming tax legislation will pass the House. A vote was possible as early as Saturday, and could cap Wolf’s quest for a record increase in public school aid and money to close a long-term budget deficit.

The details of the deal have not been made public and remained unsettled Friday evening. House lawmakers briefed by the governor’s office said it revolved around an increase in the personal income tax, from 3.07 to 3.3 percent. Republican senators said the details were not settled and they continued to prefer a sales tax increase, from 6 percent to 6.5 percent.

“We are confident that we have the votes to pass this,” Sheridan said. “We look forward to this impasse coming to an end so we can move Pennsylvania forward.”

Sheridan spoke shortly after House Majority Leader Dave Reed, R-Indiana, said he planned a Saturday tax vote that is pitting House conservatives against Wolf, the Senate and Democratic lawmakers. Those defying the House’s Republican leaders are moderates, largely from southeastern Pennsylvania.

On Wednesday, one week shy of the modern-day Pennsylvania record for a budget standoff, House Republican leaders tasked the Democratic governor with coming up with enough support to get an approximately $1.2 billion tax increase through the GOP-dominated House.

To pass, it will need 102 votes in the 203-member chamber. Top Democrats say that at least 73 out of 83 Democrats will support it, meaning close to 30 out of 119 Republican votes are necessary to pass it.

“Until the votes go up on the board, we’re concerned, but we believe we’re there,” said House Minority Whip Mike Hanna, D-Clinton.

If it passes, a vote on the main spending bill could follow, with House and Senate votes expected through Sunday night, at least.