Don't let low interest rates make you stupid
When I went off to college in 1977, inflation was high and rising, but the maximum interest rate you could earn on a savings account was capped by the government at a fraction over 5%. The conventional wisdom was "It's dumb to hold cash when inflation is over the rate you can earn." I absorbed that conventional wisdom, and it led me to make some dumb decisions.
I had, through gifts and part-time jobs, managed to save over the course of my entire life up to then, about $1000. If I'd had any sense, I'd have understood that this sum was capital. I didn't, though--and because of that, I suffered from a lack of capital all through college.
Because I didn't understand, here's how things worked out: The part-time jobs I had on campus earned me about $100 a month, which was pretty good money in those days. (In fact, it was all pretty good, except that the money wasn't paid until the 10th of the month after I'd earned it.) My expenses were pretty much zero (I lived in a dorm room and had a meal plan), so my earnings were pretty much entirely disposable, so $100 a month added up to plenty to keep me in pizza and sodas, with enough left over for all the pens and notebooks I could use. In fact, I generally ran a surplus over the course of the semester.
The problem I faced though--over and over again-- was that the semester was front-loaded with expenses. The big one was books (about $100 to $150, payable as soon as the semester started), but also incidentals for the dorm room (tea, snacks, etc.).
So, I showed up the first week of September, shelled out $150, and immediately found myself broke. And I stayed broke all month and well into the next month. Finally, on October 10th, I'd get $100 (not quite enough to get back to even). Worse yet, I typically had to send the money back to my bank, adding a couple days for the mail to get through--plus, banks in those days usually insisted on 5 to 10 days for an out-of-state check to clear. So I often didn't have access to the money until October 20th.
I didn't have any way to go into debt, so I wasn't really behind all the time, but it sure felt like that--each paycheck would merely get me back even again, so the upshot was that I was behind all the time. Finally, after the semester was over, on the 10th of the first month of vacation I'd get one last paycheck for the last month of the semester--and, with my accumulated surplus, be back even again.
If I'd only understood the nature of capital! I could have stashed my $1000 in my savings account, except for, let's say $250 transfered to my checking account. Then I'd have been able to pay my $150 beginning-of-semester expenses and still had $100 to see me through until the paycheck showed up. Instead of being behind all the time I'd have been ahead all the time. When that last paycheck had turned up on the 10th of the first month of vacation, I'd have been just about able to top off my checking account for the following semester. (And if I had a job during vacation, maybe even get a little bit ahead.)
The problem (aside from just not understanding capital) was that "conventional wisdom" I mentioned at the beginning. Here's a graph of the inflation rate from 1977 to 1981. As you see, it started the period higher than what a small saver could earn, and would soon soar to almost three times that.
Over that time I read a lot of books about money management. The books suggested several strategies for dealing with the problem. If you had lots of money (over $10,000) you could earn market rates on treasury securities or 6-month bank CDs. Money market funds were just becoming available (with minimums of $1000 or more). You could also buy gold (private ownership was legalized for Americans in 1974) or silver. Or you could just buy stuff that you were going to use (the other bit of conventional wisdom being "buy now before the price goes up.")
Most of those strategies required more cash than I had, but it just seemed dumb to leave my $1000 sitting in my savings account, losing purchasing power every day. Rather than do something as dumb as that, I went ahead and spent most of it over the course of my first year of college--hence my subsequent shortage of capital.
In fact, though, none of that was necessary. Sure--if I'd stashed $1000 in a savings account earning 5.25% it would have grown to only $1227 by the time I'd graduated, rather than the $1500 it would have taken to have preserved my purchasing power. However, that downside would have been much more than offset by the advantage that I'd have spent 4 years being comfortably well off all the time, rather than being broke all the time. Plus, I'd have come out of the whole thing with $1227!
This seems topical now, because even though inflation rates are low, interest rates are also very low. It's easy to imagine that, when cash earns almost nothing, it's dumb to hold it. It's easy to start thinking that you should invest it in something with a better return--or even just spend it. My counter to that is that holding a little capital returns a bunch of other advantages totally aside from the cash return--starting with the win of not being broke.
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