underwriting cycle
Insurance prices do not sit still. For a stretch of years they drift down as insurers compete for customers, then snap upward after a wave of big losses, then drift down again. This repeating up-and-down of prices and willingness to take on risk is the underwriting cycle. Anyone who has watched their car or home premium swing wildly without their own driving or house changing has felt it.
The two phases have names. A 'soft market' is when capital is plentiful, competition is fierce, prices fall, terms loosen, and insurers chase market share — combined ratios creep up toward or past 100. A 'hard market' follows, usually triggered by a shock (a mega-catastrophe, a run of bad results, or a drop in investment returns) that destroys capital and scares insurers: now coverage is scarce, prices jump, terms tighten, and underwriters turn business away. The cycle is self-reinforcing — high prices attract fresh capital, which revives competition and starts the softening again.
It matters because it warps almost every actuarial signal. A falling loss ratio in a hardening market may reflect higher prices, not better risk; a profitable-looking soft market can be quietly accumulating underpriced business that blows up later. Reserving is harder when rate changes muddy the loss data, and capital planning must survive the whole cycle, not just today's phase. The honest caveats: the cycle is real but irregular — its length and depth are not predictable, it is not a clean sine wave you can time, and it varies by line and region. Treat it as a force to be respected, not a clock to be set by.
After a record hurricane year wipes out capital, a hard market arrives: commercial property rates jump 40 percent, deductibles rise, and some risks cannot find coverage at all. Two years of fat profits then lure new capital in, prices soften, and the cycle turns back toward a soft market.
Soft market = cheap, plentiful coverage; hard market = scarce, expensive coverage. The cycle repeats irregularly.
The cycle is genuine but not periodic — you cannot reliably time its turns, and it differs by line and region. Beware reading a soft market's low prices as a sign of low risk; that is often when underpriced business is quietly building up.