Who's going to buy the US government debt?

One of the biggest questions that deflationists have to answer versus the inflationists is:

who will buy all the debt issued by the government to keep interest rates down?

Inflaionists say that no one will buy this government debt and thus rates will go up and we will have inflation.

Deflationists have had trouble giving a credible sounding answer to this one. But it is important to address as low government rates are a basic tenant of the deflationist camp. I've had difficulty coming up with a reasonable answer to this myself and I'm skeptical of all ideas on deflation as well as inflation. I'm concluding that the debt issued by the government will be financed by savers.

The next question is when will this happen as it hasn't happened yet? Well, we have to consider China and foreign buyers of US debt. From Barrons:

the real question isn't whether the U.S. will pay back what it's borrowed from abroad. In essence, can foreign purchases of Treasuries keep up with the widening deficit? That's the question posed by Greg Blaha and Ryan K. Malo of Bianco Research in a note to clients.

Back in September 2007, foreign purchases of Treasuries equaled 270% of new issuance, they note, as they sucked up the available supply of U.S. government securities in sight. That was before the budget deficit exploded last year owing to the economic collapse and the cost of the federal bailouts. By September 2009, foreign investors were taking down only 16% of Treasury issuance.

Obviously, foreign purchase of debt is way down and will not be enough. Next, we consider the consumers/savers. The main reason why they have not been putting their money in treasuries is that some of them have been compelled to spend on cars and houses. They've been liquidating what little they have saved. Q3 GDP showed consumers saved 3.3% of personal income as opposed to 4.9% of income in Q2. [1] (Personal savings as a percent of income on line 34)

Anyhow, now we look at the other buyer, the Federal reserve.

The 10 year treasury rates have been going higher as the fed slows their treasury purchases. The Fed ended their treasury purchase in August. The fed's balance sheet also reflects this action. An inflationist would say once the Fed stop purchases, the rates will go up and inflation will soar. This has been happening as of late, probably why gold is up and proving inflationists right so far. But this is only somewhat true for a short period while the consumer transitions to saving again. This is an inflation "head fake."

Fed Balance Sheet (notice the treasury purchase portion of assets has flattened)

Coincidentally, gold has gone a lot higher during this void where the fed ended their buying and the thrifty part of the consumer is spending. Make no mistake, though that consumers will soon return to their saving ways. Of course not all savers turned to consumers at the government's incentive. They are probably the ones to thank for keeping the rates as low as they have been. I imagine after all these stimulus measures have taken effect, the consumer will revert back to saving and de-leveraging and buying treasuries. When the consumer/saver returns to increasing their savings rate, the treasuries will once again increase increase in value.

While I'm not too sure when this will happen, I can't imagine it will take too long, maybe a couple of months. When we see people stop buying into stimulus programs, saving more in the BEA personal income and outlays reports, and the prices of treasuries start to firm up is when we will have the treasury asset class strengthen again for quite a while unless of course the government manages to whip out another carrot. Even then the US government has only so many bullets before people start to lose patience.