Effectiveness of Low Interest Rates Against Deflation, and the Spillovers of Japanese and Eurozone Rate Cuts

Answer

Part (a)

Lowering interest rates is expansionary: it cuts the cost of borrowing and the opportunity cost of spending, raising consumption and investment and hence aggregate demand, which raises the general price level and so counters deflation. How effectively it does so depends on several factors that strengthen or weaken this cause-and-effect chain.

Interest-sensitivity of spending. The transmission requires consumption and investment to respond to lower rates. In a severe downturn — precisely when deflation bites — firms and households are pessimistic and reluctant to borrow, so investment and consumption are interest-inelastic: a rate cut raises spending less than proportionately, AD rises only marginally, and the price level barely moves. Low confidence thus blunts the policy.

Root cause of the deflation — internal versus external. If deflation stems from weak domestic demand, low rates work fairly directly by cutting borrowing costs. If it stems from weak net exports (a global recession lowering trading partners’ incomes, or an over-appreciated currency), low rates help only indirectly — by inducing hot-money outflows that depreciate the currency — and the depreciation’s size depends on the volume of capital flows, so the policy is weaker against externally-caused deflation.

Nature of the economy. In a small, open economy such as Singapore, much investment is FDI by MNCs that fund themselves globally and need not borrow locally, so domestic rate cuts move investment little. A small population also means consumption and domestic investment are a smaller share of GDP, so the same rate cut raises AD less than in a large economy. Other factors — being far below capacity (on the Keynesian range, AD rises raise output not prices), entrenched negative expectations (precautionary saving), and policy lags — further condition effectiveness. In short, low rates address deflation effectively only where spending is interest-elastic, the deflation is domestically driven, and the economy is large and relatively closed.

Part (b)

Below-zero rate cuts in Japan and the Eurozone, intended to revive growth and counter deflation, reach other economies through two channels — trade (income creation) and capital flows — with effects that can be positive or negative depending on the recipient’s nature and trade ties. The thesis is that the net impact is genuinely ambiguous and contingent.

Positive via trade. If the cuts succeed in raising Japanese and Eurozone AD and, via the multiplier, their national incomes, their higher purchasing power raises their imports — i.e. other economies’ export revenue. For trading partners operating below full employment, higher net exports raise AD, growth and inflation towards target, and improve the balance of payments. The size of this gain depends on the income elasticity of the goods exported (luxuries gain most, inferior goods may fall), Japan/EU’s marginal propensity to import, and the closeness of trade ties (the US and China, large suppliers to Japan and the EU, gain most).

Positive via productive capital flows. Resorting to negative rates signals weak prospects in Japan and the EU, worsening expected returns there, so firms may divert FDI to better-performing economies. Inbound FDI raises recipients’ investment — a component of AD — and, by adding to capital stock, AS, supporting sustained non-inflationary growth.

Negative — the trade channel may not fire. If poor confidence keeps Japanese and Eurozone consumption and investment from responding (as part (a) showed), their growth stays subdued, their imports do not rise, and trading partners gain no export boost — so the positive trade impact may simply fail to materialise.

Negative via hot money. With Japanese and Eurozone rates below most others’, short-term capital flows out of them and into higher-yielding economies. If Singapore’s short rate exceeds theirs, hot money floods in, raising demand for the S$ and appreciating it. The appreciation erodes the recipient’s export competitiveness; where the Marshall–Lerner condition holds, net exports fall, lowering AD, growth and the price level, and worsening the balance of payments. The severity depends on the recipient’s nature: a small open economy like Singapore, being an interest-rate taker, can mirror world rates to limit the hot-money influx and contain the appreciation.

Judgement. The impact of Japanese and Eurozone rate cuts on other economies is, on balance, ambiguous and contingent rather than uniformly good or bad. The decisive considerations are whether the cuts actually revive Japanese and Eurozone demand (often doubtful in a confidence-starved, deflationary setting), the strength and income-elasticity of the recipient’s trade links, and the recipient’s exposure to destabilising hot money. Close trading partners with income-elastic exports — the US, China — are the most likely net beneficiaries through the trade and FDI channels. Small open economies are most exposed to the adverse hot-money/appreciation channel, but can mute it through their own rate policy. The defensible stand is that the net effect favours large, closely-trading partners when the cuts succeed, but turns negative for capital-exposed economies when the cuts fail to lift Japanese and Eurozone demand and instead merely export volatile capital.