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posted on 15 December 2015

What Low Interest Rates Have Done For The World And The Likely Effects Of A Rise

from The Conversation

-- this post authored by W David McCausland, University of Aberdeen

With the US Federal Reserve seemingly set on raising interest rates, it's time to take stock of what low rates have done for the world. And what the prospects are when this era of low interest rates comes to an end.

Since the financial crisis, short-term interest rates have been close to zero in most major economies. The US Federal Reserve has held interests around 0.25% for the last seven years. Meanwhile, the UK's bank rate remains at 0.5% and in Sweden the central bank has set a negative nominal rate.

The reasons are straightforward. Interest rates reflect the cost of borrowing so low rates make it cheaper to borrow to invest. This investment should increase growth, create jobs and ease the economy out of recession. Here's what seven years of rock bottom interest rates have done in reality.


So low interest rates should have been great for investment. This has not exactly been the case, however. Investment as a share of GDP fell after the financial crash in the US, UK and eurozone, but has taken a long time to recover, and hasn't yet regained pre-crash levels.

This is because the fall in real wages after the financial crash means labour has been relatively cheap, decreasing the incentive for firms to undertake capital investment. Plus there are ongoing concerns about weak demand both in the UK, the eurozone and the wider global economy, which also inhibit investment despite low interest rates. Fears of this weak demand may explain why rate rises in the relatively open economies of the UK and the eurozone have been delayed compared to the US, which has experienced buoyant domestic demand in recent months.


One effect that may come back to bite us is the effect of low interest rates on consumption. Some commentators fear that the UK's recent recovery, for example, is fuelled by consumption based on household debt. Any rise in interest rates may choke off that channel of recovery, and may mean some borrowers cannot repay their loans.

Laden with shopping ... and debt? EPA/Andy Rain

Global economy

Capital flows between nations are affected by differences in their interest rates. As interest rates fell after the financial crisis, it freed up huge amounts of capital, which was then invested in countries where returns were more favourable. These capital outflows worsen the balance of payments deficit. In turn this leads to depreciation of exchange rates making imports relatively more expensive and thus improving the trade balance.

As rates rise we therefore expect to see exchange rate appreciation - a "strengthening" of the dollar is expected to follow on the back of the Fed's rate rise - and a deteriorating trade account. Great news for cheap holidays in far flung lands, but bad news for exporting firms, and financial distress for emerging economies with dollar denominated debt.


A further sting in the tail is the potential effect on the housing market. British homeowners in particular have enjoyed many years of cheap variable-rate mortgages and perhaps haven't realised how even very small rises in interest rates can have quite dramatic effects on monthly repayments.

This could have dire consequences for people's ability to afford their mortgage repayments if rates rise. Some would say that such rises would help correct an overheated housing market. But, while this may be true in some regions (such as the UK's south-east), it is not true everywhere. Interest rate rises may therefore increase regional inequality.

So, we've seen that low interest rates have "good" effects in promoting investment and increasing household consumption, though there may be a cold turkey effect when cheap borrowing comes to an end.

Savings and pensions

Low interest rates and low inflation have reduced the reward for saving to pitiful levels. Households have effectively been encouraged not to save, but to spend. This means many do not have contingency plans for a "rainy day". And more importantly many people have woefully inadequate pension provision for their old age.

Low interest rates also feed through to annuity rates which convert pension pots on retirement into a stream of income throughout retirement years. Annuity rates have collapsed, and so pensions are not as generous as people had anticipated. In turn this discourages people from making pension contributions, which is exactly what is not needed as the population lives longer.

W David McCausland, Professor of Economics, University of Aberdeen

This article was originally published on The Conversation. Read the original article.

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