Cut a deal
To reach an agreement or settlement.

Strike a bargain
To negotiate a favorable deal.

Meet halfway
To compromise; to find a middle ground.

Give and take
A reciprocal arrangement or compromise.

Play hardball
To negotiate aggressively or firmly.

Bargaining chip
Something that can be used to gain an advantage in negotiations.

Throw in the towel
To give up; to concede defeat in negotiations.

Walk away from the table
To leave negotiations when not satisfied with the terms.

Hold your ground
To maintain your position in negotiations.

Get down to brass tacks
To discuss the essential details of a matter.

Put cards on the table
To be open and honest about one's intentions.

The ball is in your court
It is up to you to make the next decision.

Cut to the chase
To get to the main point without wasting time.

Go back to the drawing board
To start over after a failed attempt.

On the same page
To have a shared understanding or agreement.

Win-win situation
A scenario where both parties benefit.

Seal the deal
To finalize an agreement.

Keep your options open
To remain flexible in negotiations.

Fish or cut bait
To make a decision or take action instead of hesitating.

The best of both worlds
A situation in which one can enjoy the advantages of two different things.