There are a lot of really bad ideas out there and for whatever reason, this one chaps my backside more than most. Perhaps it's because I've had many an accountant feed my clients this load of bull or maybe it's because the math is just so flawed, but either way, I'm going to make the argument using professional grade tools you've probably never seen applied to this myth.
The Myth
Accountants love tax deductions--particularly low level accountants that think in a very narrow and constricted box. They reason that taking a tax deduction and investing the savings into the stock market will result in a higher ending net worth than simply paying off a home that has a slower growth rate and no tax deduction. This makes complete sense and they'll even run a spreadsheet that proves it...allegedly.
Pardon Me While I Laugh
Sorry, I just started laughing quietly to myself because this argument fails in so many respects. To make this argument work, there exists a truckload of conditions that must be just right and in real life, it simply doesn't happen. Sorry, I'm still laughing.
Human Behavior
The greatest flaw in this argument is the underlying assumption that the taxpayer/investor will be disciplined enough to put the money saved from the tax deduction into an investment account on a regular basis. Considering that 70% of the country lives paycheck to paycheck, I don't see that happening. While human behavior won't show up on a spreadsheet, we all know too well that this kind of discipline is a very rare commodity.
Investment Discipline
Assuming that the individual pursuing the perfection of the myth is able to manage to put the tax savings into an investment vehicle, we must then believe that he or she will invest it wisely. The most likely place to put this money is in a 401k or other employer sponsored retirement plan that offers pre-tax contributions. If you examine 401k holdings over the last decade, you will find that the top three holdings are (1) cash, (2) company stock, and (3) fixed income. In other words, the average investor isn't very good at investing.
To add to this, if you look at the annual DALBAR studies that examine average investor returns versus the S&P 500 over 15 year periods, you will see that the average investor trails the index by anywhere from 5% to 11% over those stretches. Another damning piece of evidence that this myth is riddled with basic human problems. When investors see declines, they flee the markets when it's too late and return after the bulk of the rally has passed.
Continuity of Savings
By now, you should realize the myth is really preposterous, but let's keep going because I'm in full fledged pulpit mode. The argument for maintaining a mortgage also assumes that the individual continues these investments of tax savings the entire time the mortgage is in place. Of course, financial emergencies happen and when they arise savings and investing almost always suffer. There's job loss, sickness, disability, and a host of other things that can disrupt even the most well intended saving and investing plan.
On average, one can expect a major financial emergency to strike about once every decade and when big emergencies happen, both cash flow and assets can take some hits. Having an emergency while still paying a mortgage serves to compound the problem, as more cash flow is required through a job loss, sinking asset balances and sapping valuable cash flow. Think about our current market. I think we'd all agree that for the many 50 or 60 something workers that have been let go and still have a mortgage on top of decimated retirement account balances, they are experiencing the greatest financial emergency of their lives.
Market Cooperation
What if one is lucky enough that they haven't been thrown off track to this point? This is where the completely uncontrollable forces of the market come into play. In a post yesterday that got me fired up to write this, a commenter suggested that 10 years was a long enough time horizon to carry out this strategy of keeping a mortgage and investing the tax savings. The market is negative in the last 10 years and I haven't seen a bank that's paying borrowers to take out a mortgage so it's obvious that when the market is bad, the myth becomes a nightmare.
In my post last month, I pointed out the fact that markets go through these kinds of periods and its completely normal. The problem is that most of us don't remember the last bad market because we weren't market conscious yet. To really make an assumption about market returns, a 25 year period or longer is required. The variance in returns over that period are much narrower and are positive 100% of the time. Even with an expanded time horizon, you'll still need market returns above the net interest rate on the mortgage.
Disappearing Deductions
If you think that paying mortgage interest guarantees that you will be able to deduct it on your tax return, you're wrong. On the two extremes of the income scale, we find that low income and high income households lose out on the full value of itemized deductions that include mortgage interest. On the low end, we have the standard deduction that can eat up part of the deduction and on the high end, we have something known as phaseouts of deduction values.
First, the low end. If you pay mortgage interest and have a small amount or no other itemized deductions, your mortgage interest would need to exceed the standard deduction that breaks out as follows for 2008:
- Married filing jointly: $10,900
- Single or married filing separately: $5,450
- Head of household: $8,000
For those of you lucky enough to live in a state without an income tax, you have much greater odds of losing part of your mortgage interest deduction to the standard deduction.
Now for our high income earners. This group is defined as married joint filers earning more than $159,950 and single or married separate filers earning more than $79,975. Once you exceed these numbers, your itemized deductions are more than likely going to be reduced.
This can happen from the simple phaseouts for very high income earners or because of the alternative minimum tax (AMT). I've worked with the AMT a great deal and suffice it to say that it's a nasty tax that can strip out all of your itemized deductions if your income is high enough and we'll leave it at that. see Form 6251 and page A-10 of the 1040 instructions for more on phaseouts and the AMT
Monte Carlo Analysis
This is something that is relatively new to consumers but has been used by professionals for a good while. I used Money Tree Software to take a look at what mortgage payments do to the sustainability of one's nest egg based on the variability of returns and consumer behavior over a 20 year retirement. The results should end the debate on this topic because Monte Carlo Analysis takes into account variations that are dictated by standard deviation assumptions. Put simply, it takes into account the ups and downs of spending and investing.
Here is the report for someone without a mortgage payment, focus on the last page - Download 2009 0311 Without a Mortgage
Here is the report for someone with a mortgage payment, focus on the last page - Download 2009 0311 With a Mortgage
If you don't want to download the report, here are the outcomes:
- With a Mortgage: 26% chance of retirement nest egg lasting 20 years
- Without a Mortgage: 41% chance of retirement nest egg lasting 20 years
The assumptions not listed in the reports are a $150,000 mortgage at 6%. I reduced the starting nest egg for the 'without a mortgage' report by $150,000 to be fair while also reducing the after tax spending requirement to compensate for the lack of a mortgage payment. This report is from the latest in financial planning tools that accounts for variable investment, inflation, and spending patterns over the course of the twenty year retirement modeled and covers 10,000 possible scenarios in the aforementioned variables.
The reports are clear. 41% is better than 26% and it's really that simple. Payoff your mortgage and you will have a better shot at stretching your nest egg through retirement.
Myth Debunked
After taking into consideration all of the information I've presented in this case, I believe we can all agree that this myth has been successfully debunked. Now you can get out their and payoff your mortgage early knowing that it's the right thing to do...tax deduction be damned!