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Mortgage Interest Rates– Key Factors That Impacts it

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Interest Rate
Interest rate charged is the reward for taking the risk on the capital. Interest rate is often referred to as the “cost of funds” or hurdle rate.

Risk to Capital
If the lender perceives a higher default risk on capital lent out, the higher the interest demanded. The causes to credit risks can come from shocks to the financial system from within the country or beyond. As the world’s financial systems are increasingly interlinked, any credit event far away can increase potential default risk.

Demand for funds
The increased demand for funds when it outstrips the supply will also cause interest rates to rise. Genuine demand of funds comes from the industry’s need for investment. Industry will borrow money for investments if they think their investments returns can better the interest rate. This type of capital demand can help a country increase its productive capacity. The other types of demand are for household consumption such as housing mortgages, car loans, renovation loans or personal consumption.

Supply of funds
The supply of funds varies in each country. The supply of funds can come in local currency or
foreign currency. The supply of funds generally comes from the banks. The banks in turn receive
their funds from equity and depositor’s funds. These funds are then lent out to borrowers, less
offcapital reserves requirement such as BASEL III to maintain the stability of the banks via a capital
adequacy ratio.

Financial institution having excess capital may then lend these funds to other financial institution other on an over-night basis, 1 month, 3 months, 6 months and so on. This is referred to as the interbank rate or benchmark interest rate. In Singapore it is referred to as the Sibor rate, in London, it is referred to as the Libor rate, in the USA it is referred to as the Federal Funds Rate (overnight rate).

The supply of funds in a country depends on the money supply and the amount of depositor’s funds within a financial system. And in recent decades, the availability of credit (Debt) also increases the supply of funds,and is further complicating the issue of funds availability. The effect of credit (Debt) on the supply of funds is not yet fully understood.

Government Intervention
A regulator or central bank usually intervenes in the overnight funds market. The effects of intervention then filters through to the rest of the tenures of the interbank lending rate. If there has been a major project within a country, and this entity is borrowing huge amount of funds within a short period of time. And assuming that the financial institution then borrow from the interbank market, that may cause overnight funds rate to spike for several days to distort the interest rates. In such cases, the bank’s treasury department may then file a notice/report to the regulator
informing the regulator of such a transaction. The regulator may decide to intervene by pumping in funds to smooth out the volatility.

Core Inflation and headline inflation
Core inflation measures the more constant inflation over a longer period, This helps any regulator to avoid knee jerk policy reaction. Headline inflation measures the current inflation and can be impacted by short-term supply and demand imbalances, causing temporary spikes and troughs in pricing. Every country varies in their measurement of inflation.

When Core Inflation is on an uptrend, it can start to erode purchasing power and real growth. Rise in Core Inflation primarily caused by the economy overheating maylead to intervention via increasing interest rates.

Core inflation can rise when a nation is approaching full employment. Two main factors that contribute to the increase in disposable income are, higher total employment, the other reason is potentially higher wages due to labour crunch. More disposable incomes can push up prices of goods and material. “Full employment” seems to be
around 4% for the US economy. Interest rates may have to rise to cool down the economy.

GDP growth
When a country’s total gross domestic production grows too quickly, it can cause Core Inflation to rise. For example, if a country’s GDP grows by 5% and inflation grows by 6%, this means that the country have negative real growth. When an economy grows at a fast rate, it is usually accompanied by a higher inflation rate as industry clamour for limited supplies of raw materials, and pushes production toward or beyond capacity. If income does not keep pace with inflation, this can cause social unrest. A regulator may hence pull the brakes on the economy by increasing interest rates to cool down the economy. Generally interest rates should somewhat track inflation, i.e. high inflation
leads to high interest rates. However interest rates can be kept artificially at a certain level for extended duration of time through intervention.

Note: Many factors are at play and another chapter needs to be devoted to this topic.

Cross border Interest Rates
As the world’s major economies are increasingly interlinked, policies and regulations in other countries may affect another country. If for instance the global environment is rising in interest rates and going on a reduced risk appetite mode, then all connected economies will be affected competitively. Funds may then move away to seek higher returns via higher interest rates (all factors being equal).

By observation at the Chart of USA overnight fed funds rate versus Sibor overnight rate, we can somehow see that these two economies have a somewhat correlated interest rates movement. It is hard to assess whether it is a matter of competitive pricing, Funds flows or purely some form of pegging.If these two markets are highly correlated, then it would be interesting to know which is the leading indicator and which is a lagging indicator.

Funds Flows and Exchange Rate
The movement of capital across the globe has implications on each country’s economy. Some developing countries have higher percentage of corporate and household debt denominated in foreign currency and therefore at a greater risk from sudden funds arrival and withdrawal from their markets. Money supply in local currency may also suffer from withdrawals of deposits and repatriation of profits to foreign markets. Exchange rate plays an important part for investorsparking their funds in any country. If the investment currency is expected to weaken significantlyagainst the investor’s base currency, investors may then decide to withdraw their funds from the invested currency (However do note that investors do not park all their funds in a local currency, they can park their funds in other currencies, usually in USD.)

Interest rates may have to rise when funds become scarce. Alternatively some country’s regulator or banks may have mechanisms to react preemptively to raise interest rates to cushion against a weakened currency by increasing interest rates.

Usually, it is assumed that the regulator works closely with the financial institutions to set interest rates via the following methods: –
• · Morally persuade Financial Institutions to alter interest rates. (Moral persuasion)
• · Suck up excess liquidity or provide liquidity. (Market intervention)
• · Enact policies to encourage or discourage caution. (Regulatory policy levers)

Many countries regulate the economy by varying the interest rates to regulate the speed of the economy. These monetary policy levers are effective for countries with a large domestic economyrelative to trade, such as the USA where trade accounts for 13.5% of the GDP in 2013 (World Bank)

Some countries such as Singapore where trade is 2 to 3 times the GDP, import prices contribute a higher percentage towards inflation relative to domestic prices (Reference 1). Singapore manages its exchange rate to manage import inflation. Hence there may be less impetus for intervening in the interest rates, except as a preventive measure to stabilize exchange rate movements. (Note: While MAS is believed to maintain stability to reduce interest rates volatility through intervention, it is only a presumption that MAS intervenes in the market to set interest rates by itself or via proxies.)

Shocks to the Financial System
Shocks to the financial system (systemic risks) may cause bankruptcies and defaults. There are many possible shocks to the financial system, just to name a few: –

Exchange Rate Volatility via Quantitative Easing

Quantitative Easing (Printing money) leads to currency devaluation. A currency which is devaluing may need to raise interest rates to slow down its devaluation as compensation to investors for holding the currency. Financial institutions and fund houses with un-hedged cross currency borrowings may end up bankrupt leading to a cascade of possible defaults. (A case being the recent unexpected de-pegging of the Swiss franc to the Euro, which caught many by surprise).

As a result of this de-pegging of the Swiss francs to Euros, the Swiss Francs appreciated a lot versus the Euros. As a result, the Swiss National Bank set its interest rates to -0.75% (Reference 2) to discourage people from holding Swiss Francs and to try to weaken the Swiss Franc. Investors (with base currency in Euro) will bear with negative savings rates if they expect the Swiss Francs to strengthen more than the negative deposit interest rates.

Sovereign Debt Defaults
Slow economic growth and high sovereign debt especially in European nations are risky. Budget deficit causes potential defaults. Any possible risk of default or downgrade of the economy could cause interest rates to swing upwards further escalating risks. Sovereign bonds could become worthless causing a cascade of asset losses and bankruptcies for investors.

Other Troubled Assets and Toxic Assets
Banks typically hold very little equity and are over-leveraged. Hence asset depreciation or writedowns (in the form of loss of asset value) could make the banks insolvent. Hence the Basel Accord was formed to mandate minimum reserve liquidity in the world’s banking systems (Reference 3). Increase in the minimum capital adequacy ratio (CAR) means that the banks will have less capital to lend out and hence banks may demand higher interest rates.

Summary
The above are some of the key factors that affect interest rate movements. It is inherently hard to decipher and predict the time frame of interest rate movement. Many more credit events and unexpected shocks awaitwhich could severely impact interest rates.

References: –
1. Singapore’s nominal GDP, USD $298 billion (2013). Total imports SGD $362 billion in 2015.
Total Exports SDG $449 billion in 2015. (Source: TradingEconomics.com)

2. Press release – Monetary policy assessment of 19 March 2015
(www. snb.ch/en/mmr/reference/pre_20150319/source/pre_20150319.en.pdf_)

About PAUL HO:
Paul holds an a B.Eng(Hons) Aberdeen University (UK) and a Masters of Business Administration
from a Macquarie Graduate School of Business (MGSM) Australia and has distinctions in finance
and economics. He also serves as current President of Macquarie University Alumni Association of
Singapore.
He is founder of www.iCompareLoan.com, his articles have been syndicated on STproperty,
iProperty, BTInvest, Propwise, Propquest and Yahoo amongst many other sites. He is passionate
about helping people enhance their wealth and in making money work harder for them.

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Updated: June 13, 2015 — 2:11 pm

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