U.S. & UK on brink of debt disaster: John Kemp

-- John Kemp is a Reuters columnist. The opinions expressed are his own --

By John Kemp

LONDON (Reuters) - The United States and the United Kingdom stand on the brink of the largest debt crisis in history.

While both governments experiment with quantitative easing, bad banks to absorb non-performing loans, and state guarantees to restart bank lending, the only real way out is some combination of widespread corporate default, debt write-downs and inflation to reduce the burden of debt to more manageable levels. Everything else is window-dressing.

To understand the scale of the problem, and why it leaves so few options for policymakers, take a look at Chart 1 (here), which shows the growth in the real economy (measured by nominal GDP) and the financial sector (measured by total credit market instruments outstanding) since 1952.

In 1952, the United States was emerging from the Second World War and the conflict in Korea with a strong economy, and fairly low debt, split between a relatively large government debt (amounting to 68 percent of GDP) and a relatively small private sector one (just 60 percent of GDP).

Over the next 23 years, the volume of debt increased, but the rise was broadly in line with growth in the rest of the economy, so the overall ratio of total debts to GDP changed little, from 128 percent in 1952 to 155 percent in 1975.

The only real change was in the composition. Private debts increased (7.8 times) more rapidly than public ones (1.5 times). As a result, there was a marked shift in the debt stock from public debt (just 37 percent of GDP in 1975) toward private sector obligations (117 percent). But this was not unusual. It should be seen as a return to more normal patterns of debt issuance after the wartime period in which the government commandeered resources for the war effort and rationed borrowing by the private sector.

From the 1970s onward, however, the economy has undergone two profound structural shifts. First, the economy as a whole has become much more indebted. Output rose eight times between 1975 and 2007. But the total volume of debt rose a staggering 20 times, more than twice as fast. The total debt-to-GDP ratio surged from 155 percent to 355 percent.