Insurance Underwriting Cycle

The insurance underwriting cycle is the recurring pattern in property and casualty insurance where periods of intense competition and low premiums ("soft markets") alternate with periods of rising premiums and strict underwriting ("hard markets"). Understanding this cycle is crucial for insurance investing.

The Pattern

Soft Market → Hard Market

Phase	Characteristics
Soft Market	Excess capital, intense competition, prices fall, coverage expands
Hard Market	Capital exits, competition decreases, prices rise, coverage tightens

The 1974-75 Disaster

The letters describe the worst underwriting year in history:

• Combined ratio: 108.3% (industry-wide loss)
• Many insurers failed or left the business
• Only disciplined underwriters survived

Why Cycles Occur

Capital Flows

1. High profits attract new capital
2. New capital leads to competition
3. Competition drives prices below cost
4. Losses cause capital to exit
5. Remaining capital raises prices
6. Cycle repeats

Buffett's Observation

"The insurance business is a tough cycle. You make money when others are leaving the business, and you lose money during the boom."

Berkshire's Response

Disciplined Underwriting

Berkshire's insurance companies:

• Don't chase volume at below-cost prices
• Walk away from unprofitable business
• Maintain capital for hard markets
• Grow float when others can't

The Advantage

During soft markets:

• Others write bad business to keep market share
• Berkshire waits for attractive terms
• Float grows from selective writings

During hard markets:

• Others are surprised by rising prices
• Berkshire benefits from existing relationships
• Earn underwriting profit while competitors scramble

Famous Quotes

"We will accept underwriting losses if they are compensated by float that is attractively invested."

Related

• underwriting-profit — The goal despite cycles
• insurance-float — The benefit from holding float
• national-indemnity — Example of disciplined approach