What Is the J-Curve Effect Explained

The J-curve describes why a currency devaluation often makes the trade balance worse before it gets better — the shape of the response over time. It helps explain why a weaker naira doesn’t instantly fix the trade gap, a common confusion about the exchange rate.

How it works

• Right after devaluation — imports cost more immediately, worsening the balance.
• Over time — exports grow cheaper and more competitive.
• The J shape — a dip, then a recovery.

Why it matters

It explains patience: a weaker naira can hurt first and help later, so judging devaluation by the first few months misleads. This connects to the trade balance and devaluation history in reading the naira’s path.