Personal Finance for PhDs

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What Is the Best Way to Pay Down Debt?

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The fastest way to get out of debt is energetically. If you want to get out of debt ahead of the schedule the minimum payments have you on, you must put forth effort and discipline both to free up cash flow by earning more or spending less and actually applying that cash flow to your debt in the form of additional payments.

One Debt

If you have only one debt or one type of debt and it’s going to be a long payoff process, you are going to have to find ways to keep yourself psychologically motivated through the process. You can do this by creating a visual representation of your progress, celebrating debt repayment milestones, treating yourself occasionally, reporting your progress to other people, etc.

Further reading: How to Get (and Stay) Motivated for Long-Term Debt Repayment, How to Stay Motivated While You Pay Off Debt

Multiple Debts

If you have multiple debts or multiple types of debt, there are two popular math-based methods for prioritizing your debt payoff journey, and one other practical option. In any case, it is considered psychologically beneficial to focus your energy on only one debt at a time. Make the minimum payments on all your debts, but channel your extra payoff money to just one until it is completely paid off.

The question is how decide in what order you should pay off your debt.

The Debt Snowball

The debt snowball method’s main champion is Dave Ramsey, a get-out-of-debt guru practicing today. In this method, you prioritize your debts by the payoff balance, smallest to largest, irrespective of the interest rates. The idea is that by getting an early win of paying off one debt completely, your motivation will grow and you will process through your list of debts at an ever-increasing rate. By the time you get to the debt that you expected to take you the longest to pay off, you have many smaller wins behind you to give you confidence to see the process through. Empirically, it has been shown that people who employ the debt snowball method get out of debt the fastest (psychology wins over math).

Further reading: ‘Snowball’ Debt Method Is Fastest Way To Pay Off Your Bills, Research Shows

The Debt Avalanche

In the debt avalanche method, you prioritize your payoff list by interest rate, highest to lowest. This method is the most mathematically optimal way to approach your debt payoff. If you devote the same amount of payoff money into the debt snowball method and the debt avalanche method, you will get out of debt faster with the debt avalanche method. Some people can become very motivated by interest rate math, and these people are especially suited to start their debt payoff journey well with the avalanche method.

Further reading: The Correct Way to Pay Off Personal Debt: The Debt Avalanche

What Bothers You the Most?

The debt snowball and debt avalanche methods both try to argue that there is one best way for everyone to approach paying off debt. But you know you best. If the goal is to pay off debt quickly and with great energy, you should ask yourself which debt bothers you the most or which one you are most excited to eliminate. Perhaps the answer will be the debt with the smallest payoff balance or the debt with the highest interest rate. Perhaps the answer will be the debt associated with the collector who is calling you multiple times per day or the debt you are most embarrassed to have taken out. Use what you know about your own individual psychology to start your debt payoff process off well and use that motivation to carry yourself through your list. It’s also perfectly fine to switch focus once you are left with only low-priority debt, if saving or other financial goals are more pressing than your remaining debt.

What Should I Do about My Existing Debt?

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If you have debt from the past and are currently living within your means, you have the option of doing more than making the minimum payments. How fast you want to get out of debt will depend both on the math of your situation and on your personal disposition toward debt and risk.

While you are a graduate student, you have the option of deferring your student loans, but the analysis laid out below will still be helpful in deciding whether to pay down those loans while you are in graduate school or to wait until after graduation.

Math and Facts

When deciding how quickly to get out of debt (or when evaluating new debt), the math of the situation should be given considerable weight. The most important factor is the interest rate on the debt. How does it compare to the long-term average rate of inflation? If you are considering paying down debt vs. investing, how does it compare to the long-term average rate of return you expect on your investments? How much interest are you paying on a yearly, monthly, or daily basis on your current debt balance? The higher the interest rate, the more weighty the argument that you should aggressively pay off that debt.

In addition to the interest rate, there are other attributes of your debt that should influence how quickly you pay it off (arguments for slower appear on the left, faster on the right):

  • fixed vs. variable interest rates – interest rates are set to rise at any time, so the low current variable rates are unlikely to stay low forever
  • low vs. high fees and penalties (pre-payment, late payment)
  • flexible vs. inflexible repayment options
  • secured vs. unsecured – this means whether the debt has collateral backing it, such as property, or whether it has no collateral tied to it, such as credit cards and student loans
  • bankruptable vs. non-bankruptable – student loans can virtually never be discharged in bankruptcy

Personal Disposition

Math alone is unlikely to hold 100% sway over your decisions regarding your debt, especially because risk is difficult to quantify. Your disposition toward debt matters greatly as well. There are some financial gurus today who will tell you that any debt you have is an emergency and you should pay it off as fast as possible. There are other financial gurus who won’t get fussed about you keeping low-interest debt while aggressively saving and investing. You have to determine where you fall with regard to your personal disposition toward debt, independent of the math of the situation. Does having debt give you anxiety? Are you more excited about meeting other financial goals while making minimum payments on debt? The only disposition that is really dangerous for your finances is an apathetic one in which you devote no energy to increasing your net worth; in that case, your debt is likely to become expensive.

Further reading: News Flash: Your Debt Is an Emergency, 11 Great Reasons to Carry a Big, Long Mortgage

What you bought with the debt may also play a role in how quickly you want to pay it off. If the debt was for a long-term appreciating asset such as a home or an education, you may be less inclined to pay it off quickly. However, consumer debt such as for cars or shopping (and sometimes student loans), which is debt that enabled you to live beyond your means for a time, is a type of debt that you may want to quickly put behind you.

In the end, the decision of how quickly to get out of debt is up to you, and it will depend both upon the math of your situation and how you feel towards debt. These factors also play important roles in your choice of which debt repayment method to use. As a graduate student, you likely don’t have a lot of disposable income to put toward debt repayment even if you want to. But wherever you start today, if you choose to be energetic about paying off your debt, you can find ways to increase the money you have available to pay down debt by implementing frugal practices or increasing your income.

Further reading: The Goal: Defeating Student Loan Debt

Why should I save and invest?

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Everyone knows that they are supposed to save money, but not necessarily why. If you are accustomed to living paycheck-to-paycheck, you may not even realize how much peace of mind having savings can give you. In addition, investing your money properly for the long term is one of the best ways to build wealth.

The utility of accessible funds.

The power of compound interest.

Further reading: 2 Good Reasons to Start Investing Now, No Matter How Much Money You Have

Accessible Funds

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Living paycheck to paycheck is truly unsustainable. If you spend all the money that comes in and never build up any savings, you are unable to adapt when life throws you a curveball and it is almost impossible to plan for the future. Eventually, you will want or need to make a purchase that you did not anticipate. The expenditure could be for a true emergency, such as a health crisis, or simply a high-value purchase than you are able to cash flow, such as a laptop.

Building up accessible funds will likely reduce the anxiety you may feel about money. You can use the savings in the case of an emergency, for planned or anticipated purchases, to achieve goals, and to build wealth over time.

Further reading: In Defense of Savings Accounts

Compound Interest

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Even though it’s doubtful that Einstein ever said that compound interest is the most powerful force in the universe, it’s indisputable that it is an incredible tool that can work for or against you.

Compound Interest for Investing

When compound interest works in your favor, an asset that you own earns a return and increases in value. Then that increased asset earns a return and increases by even more. The growth is exponential.

compound interest equation

 

As an example, see how a one-time investment of $5,500 will grow over time if invested with an average rate of return of 8%. After 30 years, the investment balance has grown to over $60,000, with over half of that growth occurring in the last 10 years.

investment one time

 

Investing on a regular basis is how Millennials are likely to provide for their own retirements now that pensions have all but disappeared and Social Security is uncertain. If you max out a 401(k) every year for 30 years with an 8% average rate of return, over 30 years you will have contributed $524,880 but your investment balance at the end will be $2,172,944.

investment continuous

 

You can create your own projects of the effect of compound interest using Illuminations.

GSF Reader Post: My Realistic Career Earnings Expectations Push Me to Save Aggressively

Compound Interest in Debt

Compound interest can work against you in the case of debt. When you owe a given amount at a certain interest rate, the amount you owe will also increase exponentially unless you make payments that more than keep up with the growth.

Compound Interest in Inflation Risk

One great reason to invest that most people don’t consider is inflation risk. The average historical inflation rate is around 3-4% per year. That means that every year your money goes 3-4% less far in terms of real purchasing power and the prices will double approximately every 20 years. If you don’t invest at a rate that at least keeps pace with inflation, the value of your money decreases with time. To build wealth through investing, you must earn a return that exceeds the average rate of inflation.

Types of Investments and Basic Principles

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Risk and Return

In general, in investing there is a correlation between risk and return. Over the long term, being willing to take more risk generally results in a higher overall return.

Further reading: Risk-Return Tradeoff

Asset classes

The three primary asset classes are stocks, bonds, and cash. Within stocks and bonds, there are a variety of sub-classes. Within the stock asset class, you can have US vs. international, large-cap vs. mid-cap vs. and small-cap, growth vs. income, etc. Within the bond asset class, you can have various time horizons, risk ratings, and organization types. There are also more minor asset classes (alternative investments), which include commodities, real estate, etc.

Further reading: Stocks – Part II: The Market Always Goes Up

Asset Allocation

Your asset allocation is the percentage of your investments that are in each asset class or sub-class. You can create an asset allocation that reflects your desired balance between risk and reward. A higher-risk, higher-reward asset allocation would be heavier toward stock investments, while a lower-risk, lower-reward asset allocation would be heavier toward bonds and cash. Your asset allocation will reflect your personal risk tolerance as well as your timeline on your investment. Traditionally, an individual with a consistent risk tolerance will move her retirement investments from more aggressive to more conservative investments as she draws closer to starting to withdraw the money.

Further reading: 9 Common Investment Mistakes and How to Avoid Them

Active vs. Passive Investing

Active investing usually involves a lot of activity, such as picking individual investments and trying to buy low and sell high. Passive investing, conversely, applies a buy and hold strategy in which the investments are held long-term. A subset of passive investing is index investing, in which the investor holds a representative sampling of a subset of investments, such as the S&P 500.

Further listening: Planet Money Episode 688 Brilliant vs. Boring; Passive Index Investing is Boring. And it’s Spectacular., Stocks – Part III: Most People Lose Money in the Market