According the Bureau of Economic Analysis, US household saving was 0.0 per cent of income in June. I was going to boast that we in Australia were doing better, having had negative savings for several years now, but a check over at General Glut’s Globblog informs me that the ABS figure deducts depreciation of privately owned housing (correctly in my view,though others disagree) while the US does not. Both measures omit capital gains, and the validity or otherwise of doing so is central to any assessment of the sustainability of the present economic trajectory.
Regardless of this, the collapse of household saving in the English-speaking countries suggests to me that, with deregulated capital markets, the low real interest rates that have prevailed recently, particularly in the US, are not consistent with any significantly positive savings rate. It follows that such low interest rates can be sustained only so long as someone else is saving: either households without easy access to credit or foreign governments. Business may save some of the time, but low interest rates make borrowing for speculative investment quite attractive I can’t see this lasting too long, and therefore conclude that real interest rates have to rise.