How Rising Interest Rates Affect Your Investments

“One of the most important things I’ve learnt over the years is to remember that if you don’t know what is going to happen, don’t structure your portfolio as through you do.” – James Montier

According to a recent survey by Edward Jones, 63 % of Americans don’t know how rising interest rates will impact their investment portfolios. And 24% say they feel completely in the dark about the potential effects.

The 10 year treasury yield started the month of May at 1.62% and just recently hit 3.00% in early September. A move of that magnitude in interest rates can have a large effect on your investments in a number of ways.

Fixed income 101 teaches us that bond prices and interest rates are inversely related. As one rises the other one falls and vice versa. The Vanguard Total Bond Market ETF (BND) is the perfect vehicle to see how the rise in rates since May has affected bond returns since it covers the aggregate bond market.

From May to August BND lost -4.01%. The year to date loss through September 5th now stands at -4.11%. These are not stock market crash losses by any means but could be very surprising to bond investors that have seen mostly positive performance in recent decades.

One positive about rising rates is the fact that you can now reinvest your income at higher rates than were seen at the beginning of summer.

Bonds and interest rates have a fairly straightforward relationship, but it’s much more difficult to predict how rising interest rates will affect stock returns.  Interest rates do play a role in determining stock returns since higher rate investments can compete with stocks for investor dollars.  In a rising rate environment, inflation also plays a large role in determining stock returns.

To find the most recent period of a sustained increase in interest rates, you have to go all the way back to the period from the 1950s to the 1980s. Here’s how interest rates, inflation and stocks performed over those decades:

rising rts

Rising rates alone did not hurt stocks in the 50s and 60s and it was the combination of higher rates and elevated inflation that did stocks in over the 70s. There are many more moving pieces that determine stock market performance so don’t base your decisions purely on interest rates and inflation.

Mortgage Rates
Mortgage rates are priced off of the 10 year treasury yield. At the beginning of May the average 30 year fixed mortgage rate was 3.35%. By the beginning of September it had risen to 4.57%.

The monthly payment on a $250,000 mortgage at 3.35% is about $1,100 while you would be paying closer to $1,280 with a 4.57% rate. That’s real money out of your pocket every month. Although 4.57% is still relatively low considering the average 30 year rate going back to 1976 is 8.62%.

Savings Accounts
Since the rate of interest on your savings accounts are tied to short-term interest rates that are set by the Fed, there hasn’t been any relief for savers just yet. Average rates remain low. The Fed doesn’t control longer term rates like the 10 year, but they do set the short-term rates that banks use to set their savings account rates. I wouldn’t expect those rates to rise anytime soon, but you never know.

Until the Fed increases short-term rates, online savings accounts are your best bet for higher yield on savings accounts. They have much lower overhead costs than banks so they are able to offer you higher rates on your savings dollars. I also think intermediate term CDs with low early withdrawal penalties could be a good option for your medium term cash needs. This is a topic I plan on covering in a future post.

The future is always unknown, especially when it comes to predicting the state of interest rates. There are a number of factors that affect interest rates including inflation (both actual and expected), economic growth, the Fed, retirees and their search for income and the demand for bonds.

Plus, it’s not a foregone conclusion that rates must continue to rise further from here. We’ve had cycles before where rates don’t rise for a long time.

As with all investment decisions you have to weigh both your risk profile and time horizon. If you can’t stomach the thought of losing money the bond portion of your portfolio, stay closer to the short end of the maturity spectrum (1-3 years). If you can handle more volatility for the higher yields that intermediate term bonds offer, invest in the 3-10 year maturity range.

However, most investors look to their bonds for stability, so I don’t think it makes sense for everyday investors to invest in longer duration bonds (10+ years). If you do be aware that the losses can far exceed the higher interest rate that you can earn. The 20+ Year Treasury ETF (TLT) is down almost 14% this year as longer term bonds are more sensitive to interest rates.

It’s helpful to know what effect rising interest rates can have on stocks, your mortgage rate and your savings account, but it’s much harder to take specific actions on these accounts based on your future views on rates.

Your best bet is to refinance your mortgage if you have a rate that currently exceeds 5.25% and you plan on staying in your house long enough to take advantage of the monthly savings to offset your closing costs.

Robert Shiller Online Data
Federal Reserve Data


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Discussions found on the web
  1. Paul @ The Frugal Toad commented on Sep 10

    Nice summary about the impact interest rates have on your financial matters! Interests rates affect the price of everything and it is a part of every service and product that consumers purchase.

    • Ben commented on Sep 10

      We’ve really only seen interest rates go in one direction (down) for the past few decades so it’s helpful to know how rising rates can affect the different parts of your finances. Rates can hit you in many different places.

  2. My Own Advisor commented on Sep 10

    I got out of many bonds a few years ago, moved into stocks. I don’t hold many bonds at the moment since they are going to get killed if rates spike.

    There remains some good stocks to buy with our CDN $$ trading high, I’m taking advantage of that right now and loading up on dividend stocks.

    • Ben commented on Sep 10

      I think if you are’t approaching retirement and can handle the volatility in stocks, then it makes sense to leave bonds out of your portfolio as you’re right that rising rates or inflation will eventually eat into bond returns.

      For those that need a stabilizer, short or intermediate bonds can still help psychologically.

  3. Martin commented on Sep 12

    Ben, nice review. I paid close attention to the stocks, since I try to be invested in stocks as much as I can (you know I do not believe in bonds). I always thought stocks usually go up to catch the rising rates over long run. It was kinda surprising that those last two decades it actually didn’t work.

    • Ben commented on Sep 12

      Thanks. I think it’s always good to have a historical perspective on the markets. The 1970s was a time of super high inflation so it’s difficult to know if that scenario will happen again or not. But good to know in case we do get sky high inflation to be prepared.

      Another factor to consider is that stocks were coming off large gains in the 50s and 60s so the fact that real returns were lower in the 70s isn’t that surprising.

      The beginning valuation at the start of the rising rate or inflation environment is what really matters.