MANCHESTER — When aldermen meet Tuesday to discuss the school and city budgets, residents will be watching to see how much funding is going to the school district and how much their taxes are likely to increase next year.

But it’s the five less controversial budget items that have been left lingering on the table that will largely determine both the final budget bottom line and when a budget is finally approved.

Aldermen will again discuss Mayor Ted Gatsas’ budget proposal to allocate $150 million to the school district and $133 million for city services. The board will also take up the alternatives to this budget, including a compromise aldermen say they are working on.

The other budget items that remain include transferring $132,000 from the parking reserve account to the Parking Division to pay a loan bill for the Hampshire Plaza parking garage, allocating $2.2 million in recreation user charges to the Recreation Division, using $1 million in expected surplus to prepay next fiscal year’s city pension costs, appropriating $4.7 million of parking revenues, and approving more than $20 million in state and federal funds for community improvement projects.

Parking and recreation items are part of enterprise funds, self-funded departments the city oversees. These items have not yet been approved because some could change depending on what a budget compromise looks like.

Alderman Joyce Craig has proposed raising the rate for event parking around the Verizon Wireless Arena and Northeast Delta Dental Stadium from $1 to $2. If the aldermen were to agree to this, the parking budget could be altered. This has prompted Craig to ask that the remaining budget items be voted on as a package once a compromise is reached.

This has also delayed a vote on the $1 million Gatsas set aside for pension costs. The mayor warned aldermen Tuesday that if this item is not approved, the surplus funds will by charter rule be split between the rainy day fund and lowering the tax rate. The city will then have to find $1 million from other city departments to make up the gap. Gatsas suggested taking 1 percent from each department’s budget, which would lead to layoffs.

The charter requires aldermen to vote on all of these items by the second Tuesday in June, which is June 12, the night of the next aldermanic meeting.

Because the aldermen already approved and the mayor vetoed the school and city budget lines, the charter says those items can be debated until the end of June. This means some items require approval Tuesday and some can stay on the table until June 30.

When Alderman At-Large Dan O’Neil, the board’s chairman, announced Tuesday there would be a special aldermanic meeting June 12, Gatsas pushed back, saying the school board had a special meeting that same night. O’Neil stuck to his position.

“There will be a meeting next Tuesday. With all due respect, it’s not your budget anymore,” O’Neil said.