[2963] Is inflation the reason behind BNM hikes, at a time when the output gap is big?

Bank Negara raised its benchmark rate yesterday, from 2.50% to 2.75%. While the general reasoning is fighting inflation, I am not that convinced of it. My primary reason is, Bank Negara’s own analysis shows inflation (demand-push) is not a problem. Yes, consumer price index has been rising high, but most of those price increases are not something monetary policy can address without exerting damage to the economy.

The central bank regularly published estimates of output gap in the economy. Looking at the output gap is the easiest way to understand the economy quickly. To put it simply, the gap tells us about the capacity utilization of the whole economy. It is the difference between total (or maximum) capacity, and capacity used. When the used capacity is well below max, then inflation should be relatively low with unemployment high. When resources are not used up, there will be slack in the economy which is reflected in inflation and unemployment numbers. The same is true vice versa.

And based on the latest estimates published by Bank Negara back in March 2022, there is a huge slack this year (and estimated to be bigger than last year’s):

When the gap is big and when there are no other concerns, you would want to encourage the economy to keep going. You would want to close the gap, and approach full capacity (which is another way of saying full employment). And you can do this without much concern for inflation. That means, rates could be left low.

When you raise rates in these circumstances (as Bank Negara is doing), it means widening the output gap. You would lower demand-pull inflation (if there any), but since you have no control over supply-push inflation, you are just targeting the wrong part of the economy. You are pulling demand down almost immediately, but do nothing to the supply side, which is out of your immediate control (in fact, low rates improve supply, but not in the short term). Hence, widening the gap.

Beyond domestic considerations and on top of the current gap situation, there are concerns the global economy will go into yet another recession so short after the last. The US economy is close to experiencing one although its growth resilience so far has surprised many economists (and demand-pull inflation is problem there). Europe is almost certain to enter recession next year (war and gas supply are exacerbating supply-push inflation). Growth in China has been weak but there is some hope it would provide some cushion in an otherwise sullen world. When we look ahead, Bank Negara’s rate hike feels even more jarring and lags behind expectations, when they should be ahead of the curve.

So, when I read the Monetary Policy Statement and the references to inflation, I am not so sure inflation is the primary driver for the hikes. I have been suspecting so for a while now.

In my opinion, there are two other things at work that convinced the Committee to do what they did yesterday:

1. It is about the ringgit. The currency along with many others out there have been under severe depreciation pressure due to US Federal Reserve’s series of drastic rate hikes. The end of easy money is upon us. And domestic benchmark rates are a big lever to relief the pressure partially: rising domestic rates would keep the difference with those in the US smaller than it would have been otherwise. And smaller difference means less depreciation pressure on the ringgit.
2. The problem of zero-interest rate policy (ZIRP) and liquidity trap. Many conventional economists (of the 1990s?) believe monetary policy loses its potency the lower the rates go. And since Bank Negara Rates is already low by historical standards, maybe they are concerned about losing monetary influence and hoping to build up ammo for the next crisis.

In both cases, the cost of pursuing the goals will widen the gap today.

The relevant question is (especially with respect to the ringgit), how big would the gap be if the ringgit is allowed to depreciate beyond what the rate hikes allowed? Supply-pull inflation does hurt demand after all, and weaker ringgit means more imported inflation. Comparing the two gaps would help determine which policy to take.

I would love to read the minutes and see references to the gap, if any.