Hello, Lykkers! Most people think a business deal ends when the contract is signed. In reality, that moment is not the finish line—it's the starting point of a new psychological and financial phase. What happens after the agreement is sealed often determines whether a deal becomes a long-term success or a costly regret.

Let's explore what really goes on behind the scenes after the handshake, signature, or fist bump.

The Emotional Shift After Signing

When negotiations end, both sides often experience a surprising emotional shift. Tension drops, relief kicks in, and sometimes even excitement takes over. This reaction is not just emotional—it's psychological.

During negotiations, parties are focused on risk, compromise, and uncertainty. After signing, the brain releases that pressure, which can create a temporary sense of overconfidence or satisfaction. This is why many teams celebrate immediately after closing a deal.

However, this emotional high can sometimes mask important post-deal responsibilities.

The "Post-Deal Reality" Phase

Once the agreement is signed, attention shifts from negotiation to execution. This is where many deals either succeed or struggle.

Operational challenges begin to surface: integration of teams, alignment of expectations, cash flow adjustments, and legal compliance requirements. What looked clean on paper can become complex in practice.

In mergers, for example, cultural integration between companies can be just as important as financial alignment. If ignored, even strong deals can underperform.

Expert Insight

Daniel Kahneman, a psychologist and economist, said that humans often experience decision utility differently from experienced utility—meaning people may feel satisfied at the moment of choice, even if the long-term outcome is less beneficial.

His research highlights why dealmakers often feel confident immediately after signing, even though the real results depend on future execution.

Why Deals Often Change After Signing

It's common for expectations to shift once a deal becomes operational. Several factors contribute to this:

• Information becomes clearer – Hidden risks or costs may emerge.

• Market conditions change – Interest rates or demand may shift.

• Assumptions are tested – Real-world execution rarely matches projections.

• Human factors appear – Leadership changes or team resistance can influence outcomes.

This is why due diligence doesn't end at signing—it continues into implementation.

The Role of Trust After the Agreement

Interestingly, trust becomes even more important after the deal is signed than before.

Before signing, trust is about belief in promises. After signing, it becomes about delivery. Both parties must now rely on each other to fulfill obligations that may span months or years.

If trust weakens during execution, even well-structured deals can deteriorate quickly.

Behavioral Finance in Action

Financial behavior doesn't stop at the negotiating table. Emotional bias continues to influence post-deal decisions.

For example, the "endowment effect" can cause parties to overvalue what they've just acquired, leading to resistance in adjusting strategy when needed. Similarly, confirmation bias may cause teams to ignore early warning signs after a deal closes.

Understanding these biases helps businesses stay objective during execution.

Turning Agreements Into Results

The real value of any deal is created after the signature. Successful companies focus heavily on transition planning—ensuring clear communication, defined responsibilities, and measurable milestones.

Integration teams, financial controllers, and legal advisors often work together during this phase to ensure alignment between what was agreed and what is actually delivered.

Without this structure, even the most promising deal can lose momentum.

Final Thoughts

For Lykkers, the key takeaway is simple: signing the deal is only the beginning.

The psychology behind deal closures shows us that emotions, expectations, and human behavior play a major role long after the contract is signed. Understanding this post-deal phase helps businesses turn agreements into real, lasting value.

Because in finance, success is not just about making the deal—it's about making it work.