But the tactic has an upper limit. Their research found that asking for any range that would be more than 25% did not produce better results. Taking the Paysa survey and the Columbia Business School survey results together, it might make the most sense to consider negotiating for an increase in pay between 5-10%.

Determining how much is "too much" to negotiate depends heavily on the context, the market value of the item, and the cultural setting. In professional real estate or business acquisitions, a counter-offer that is more than 20% to 25% below the asking price is often seen as an "insulting" or "low-ball" offer that might cause the seller to walk away from the table entirely. However, in a flea market or a traditional bazaar, starting at 50% of the initial price might be a standard part of the social dance. The key to a successful negotiation is to ground your offer in data; if you can prove that similar items or services are valued lower, your request remains "reasonable." Negotiating is "too much" when it moves from seeking a fair deal to being predatory or disrespectful of the other party's time and costs. For example, in a small "Mom and Pop" shop where margins are already thin, aggressive haggling over a few dollars can damage the relationship. A good negotiation should feel like a "win-win" where both parties feel the final price is justified by the value provided.