Lemon

The word comes from the used car market, where a lemon is a vehicle that keeps breaking down or has a fault that was concealed at the point of sale. The buyer pays a normal price, then discovers that repairs will cost far more than expected.

The opposite of a lemon is sometimes called a peach, meaning a good-quality item. In business and investing, the same idea applies to many assets.

A company with flattering accounts that hide weak cash flow, a property with undisclosed structural problems, or a start-up whose customers are about to leave could all be called lemons. The common feature is that the true quality is not visible to the buyer at the time of purchase.

For finance people the important point is the gap in information. The seller usually knows the condition of what is being sold better than the buyer does, and this imbalance (known as asymmetric information) is why careful checking matters.

Tools such as due diligence, independent inspections, warranties, audited financial statements and vehicle history reports all exist to narrow the gap. A lemon also has a direct accounting effect.

When a business discovers that an asset is worth far less than it paid, it may need to record an impairment, which is a write-down of the asset's book value to its lower recoverable value. This reduces reported profit in the period the problem is recognised.

Consumers also have legal routes if they buy a defective vehicle, because many places have lemon laws that give a right to a repair, replacement or refund. For businesses buying equipment, protection usually comes from the contract terms rather than a specific statute.

The lemon idea also helps explain why prices in some markets look odd. When buyers cannot judge quality, they tend to assume the worst and pay less, which hurts honest sellers of good items.

This is why reputable sellers invest in certification, transparent reporting and money-back guarantees, because those signals let a buyer trust that the item is not a lemon.