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- [Read more…] about Twitter Weekly Updates for 2009-12-19
Evil Interest
Everybody with a savings account or almost any form of debt has at least a passing familiarity with interest. How many of you actually know what it is, or even how much you are actually paying?
First, some definitions.
Principal is the term used for the amount of money you have borrowed.
Interest is the rent you pay to have that money. Interest is money-rent, expressed as a percentage of the principal. If you borrow $100 at 10%, you pay approximately $10 in interest. I say “approximately” because it’s just not that simple.
There are two kinds of interest: simple and compound.
Simple interest is called that because it is just that: simple. It’s easy to understand and it’s what most people mistakenly assume they are paying. With simple interest, the interest rate is only applied to the principal, never to the accumulated, or accrued, interest.
For example, if you have borrowed $100 at 10% annual interest, this is what your balance will look like:
- At the time of borrowing the money, you owe $100.
- After 1 year, you owe 10% of the $100, in addition to the original $100: $110.
- After 2 years, you owe 10% of the $100, in addition to the original $100 and year one’s interest: $120.
- After 10 years, you will owe a total of $200.
That’s simple.
On the other hand, in addition to five more fingers, you have compound interest. Compound interest complicates things considerably. With compound interest, interest is applied to the entire balance of what you owe; both the principal and the accrued interest are included in the calculation.
For example, with $100 at 10% compounded annually:
- Year 1: You will owe $100 + 10% of the original $100, or $110
- Year 2: You will owe $110 + 10% of the $110, or $121
- Year 3: You will owe $121 + 10% of the $110, or $133.10
- Year 4: You will owe $131.10 + 10% of the $110, or $144.41
- Year 5: You will owe $144.41 + 10% of the $110, or $158.85
- Year 6: You will owe $158.85+ 10% of the $110, or $174.74
- Year 7: You will owe $174.74 + 10% of the $110, or $192.21
- Year 8: You will owe $192.21 + 10% of the $110, or $211.43
- Year 9: You will owe $211.43 + 10% of the $110, or $232.57
- Year 10: You will owe $232.57 + 10% of the $110, or $255.83
That is a total of $155.83 in interest paid over 10 years, or $15.58 per year, for an effective interest rate of 15.583%.
To throw another twist into the mix, interest is rarely compounded annually. Monthly, or even daily, is much more common. With monthly compounded interest, the annual rate, or APR, is divided by 12 and recalculated every month.
For example, using the same $100 at 10% APR, compounded monthly:
Since the interest rate is compounded monthly, we will be using the monthly periodic rate, which is 10% / 12, or .83%
- Month 1: $100 + .83% of $100 = $100.83
- Month 2: $100.83 + .83% = $101.67
- Month 3: $101.67 + .83% = $102.51
- Month 4: $102.51 + .83% = $103.36
- Month 5: $103.36 + .83% = $104.22
- Month 6: $104.22 + .83% = $105.08
- Month 7: $105.08 + .83% = $105.95
- Month 8: $105.95 + .83% = $106.83
- Month 9: $106.83 + .83% = $107.72
- Month 10: $107.72 + .83% = $108.61
- Month 11: $108.61 + .83% = $109.51
- Month 12: $109.51 + .83% = $110.42
That’s $0.42 more interest paid the first year, and that number will continue to climb each year the interest is compounded.
It gets worse if interest is compounded daily, like most credit cards. If you see “Daily Periodic Rate” anywhere in your agreement, you are getting compounded daily. This same loan, compounded daily instead of monthly will yield $110.51 owed the first year. That $0.51 might not seem like much, but imagine it on a $10,000 credit card, or a $100,000 house! And that’s just the first year. Every year after, the disparity gets bigger.
Edit: The formula for calculating compounding interest is Principal x (1 + rate as a decimal / compounding term)compounding term. So, for $100 at 10% compounded monthly, the formula is 100 x (1 + 0.1 / 12)12
That’s the downside to compounding interest. There is an upside, if you have investments or interest-bearing accounts. If that’s the case, compounding interest is working in your favor.
If you save $100 per week, and manage to get a 10% return on your investment, you will have $331,911 after 20 years(with $104,000 contributed) and $2,784,424 after 40(with $208,000 contributed). That mean you will have tripled your money in 20 years, or vingtupled* it in 40 years.
That’s how you get rich. $100 per week for the rest of your life will leave you with a comfortable retirement, without missing out on life now.
—
* Yes, it’s a real word**. It means a twenty-fold increase.
** No, I did not know that yesterday.
Brown Bagging Your Way to Savings
Today’s post is written by Mike Collins of http://savingmoneytoday.net as part of the Yakezie Blog Swap in which bloggers were asked to share their best day to day money saving tip.
Do you buy lunch at work every day? Have you ever actually sat down and added up how much money you’re spending?
I did once…and I almost fell out of my chair when I saw how much I was spending!
Back in the day I used to buy lunch at the office almost every single day. It certainly didn’t seem like I was spending much. A chef salad here, a cheese steak and fries there. But every day I was spending about 7 dollars and change. That’s $35 a week, which adds up to a whopping $1820 over the course of a year!
I started thinking about all the things I could do with that extra $1820, like paying off some of our debt, increasing my 401k contributions(ed: but staying with your 401k contribution limits, of course!), picking out a new big-screen tv, or enjoying an extended family vacation at Walley World.
I immediately starting bringing my lunch to work 4 days a week (I do treat myself once a week) and I’ve been saving money ever since.
Now I know what you’re thinking. It costs money to bring lunch from home too right?
Yes, of course it does…but nowhere near as much as eating out every day. Let’s do some basic math to prove the point. Say you swing by the grocery store to buy some ham and cheese so you can make sandwiches for the week. You pick up a half pound of ham for $3 and a half pound of cheese for $2. A loaf of bread on sale runs you another $2. That means you just spent $7 for a week’s worth of lunches. Even if you only bring lunch 4 days a week you’ve still saved yourself $21. That’s over $1000 a year!
And here’s a tip to save even more: If you have extra food from dinner, just bring the leftovers for lunch the next day. We always try to make just a little bit extra so I can have free lunch the next day.
So the next time you’re sitting around complaining that you don’t have enough money for so and so, think about how much money you are spending every day on lunch, or coffee, or cigarettes, etc. You might just find that you have plenty of money after all if you just shift your priorities a bit.
Filing Bankruptcy: Pride or Shame?
I’m a big fan of personal responsibility. If you’ve promised to do something, you should do it. With that said, it seems odd to some people that I don’t have an ethical problem with bankruptcy. For some people, it is the only option after a long series of problems.
Don’t get me wrong, it should be a shameful decision. Reneging on your word should never be a source of pride. It should be a difficult decision to make. A couple of years ago, I came very close to making that decision myself.
It should not be a reason to celebrate and it should absolutely not be a reason to behave irresponsibly. Some people don’t see a need to take care of their responsibilities because, when it gets bad, they’ll be able to file bankruptcy and make the creditors go away. They are abusing a safety net. That abuse hurts everyone. Credit card companies have to charge higher interest rates so the paying customers can cover the risk of those who default or file bankruptcy.
There is one prominent local bankruptcy attorney who files every 10 years, and has filed consistently for decades. He runs a thriving practice, so it’s not a matter of poor choices, it’s a matter of deliberately living beyond his means and screwing his creditors. He’s one of the slime-balls that give lawyers a bad name. He is one of the many who abuse a lifeline designed to save people from a life of destitution they didn’t ask for, and he does it to finance his extravagant lifestyle.
If you have found yourself buried in a debt you didn’t plan for, if life threw you a curve-ball that you are entirely unable to deal with, if you have to file bankruptcy, it’s okay. Really. When you go in front of the judge, have the decency not to enjoy it, and try to learn from the experience.
Huh?
Am I the only one who just noticed that it’s Wednesday? The holiday week with the free day is completely screwing me up.
Just to make this a relevant post:
Spend less!
Save more!
Invest!
Wee!
Integrity
I’ve spent my entire adult life trying to live to a fairly strict code of behavior.
I don’t cheat. Not at games, in my relationships, on my taxes, nothing. I don’t cut corners or try to get away with things.
The reason isn’t that I’m trying to be some fictional knight in a storybook. It’s been my experience that cutting those corners always seems to be more expensive in the long run, whether it’s fines, lost friends and relationships, or even a general crappiness of life. The people I know who are always trying to get away with stuff or get ahead at someone else’s expense have the least, whether that’s money, friends, loved ones, or happiness.
Living a noble, honorable life has benefits.
I don’t pay fines and penalties often. Just the occasional speeding ticket, but that’s been one in the last 10+ years. Not getting fined for parking in a handicap spot or cheating on my taxes makes it far easier to save my money and build my wealth than constantly handing money over to the government. I’ve got a friend who can’t keep himself away from the justice system. Spending 3 or more months in jail every year makes it hard to keep a job or have a relationship with your family.
My friends know they are my friends. They can count on me and that means I can count on them. They also know that if that equation falls out of balance, it will be over. I only want friends I can count on. If you can’t have my back, or you feel a need to gossip about my life, I don’t want you in it.
My kids have no insecurities about my love. They know I am here for them, no matter what happens. Even if the occasional temper tantrum has them screaming that I clearly hate them, they know better. They know this father’s love is unconditional.
Work trusts me. Last year, I basically created the department I work in my telling my boss that I was sure I could make it work.
I have some badass karma. In general my life if pretty good, and I like to think it’s because I work to be a good person, do good things, and treat the people in my life right.
There are some downsides. Not everyone lives like this and I have problems relating to them. I’m not a sympathetic person to someone who tries to duck out on child support or who has to spend 30 days in the workhouse for trying to hock a stolen stereo. I can come across as a bit self-righteous.
I expect the people in my life to live the same way and treat me the same way. When that fails to happen, those people are nearly always evicted from life.
Life’s too short for people willing to screw you over.
Sometimes, though, that eviction is too complicated to do quickly, cleanly, or easily. That’s can be a turmoil in my life, and I hate turmoil. I don’t normally have to debate the correct course of action. Something is either right or it’s not. If it’s not, I know it and it doesn’t get done. If I have to wonder, then it’s definitely not right.
Every once in a while, I get stuck with a choice between shitty options and that’s where this system fails. Sometimes, no option is good, right, and proper. Every choice has a big downside, and none of the choices are clearly right.
That’s turmoil. Indecisive, emotional, horrible turmoil.
How was your day?
