What follows is a long and (probably) boring post about budgeting. I'm using this blog space to work out some math for my own edification, but I figured I'd post it here for future reference. As a personal finance author, this is the kind of stuff I think about way too much of the time:
I saw a blog recommending a budget that is "balanced" as follows:
20% for savings and debts
50% for needs
30% for wants
They wrote that this system came from a book; it wasn't something they made up themselves. I'm a little stunned that a published author would recommend a system like this.
Housing - 30-40%
Utilities - 8-15%
Food - 10-20%
Transportation 15-25%
Medical - 8-15%
Clothing 3-5%
Personal and Miscellaneous 5-10%
Savings 5-10%
Debt payments 10-20%
Clearly, these don't easily add up to 100%. That's by design, as each person needs to customize the budget to fit his/her own situation. Got full medical coverage from your employer? That's 8-15% you can apply to other areas of the budget. Ideally, you'll pay off the debts that are eating up 10-20% of your budget so you can devote that extra money toward savings; 20% is the ultimate goal for the savings part of your budget (the list above is designed for people actively trying to pay down their debts).
Returning to the initial budget I mentioned, I think 30% for wants is way out of line. People devoting nearly a third of their income toward discretionary spending is why they need books like mine in the first place.
It's hard to set a baseline for individual spending, because everyone's income and habits vary so widely. I use the Bureau of Labor Statistics' numbers to make sure I'm not proposing anything out of step with reality.
Let's consider an income of $50,000, which is very close to what the U.S. Census Bureau tells us is the median income in the US. 18% of that is confiscated in income taxes, leaving not quite $41,000.
Let's use $3,415 as our monthly income, and try to figure out a budget:
Housing: 30% or $1,025
That's $670 toward the home loan
$250 for real estate taxes
$60 for insurance
$45 for PMI
Utilities: 6% or $205
That's $156 for Gas, water, sewer, electric and phone
$49 taxes
Food: 10% or $341
Transportation: 15% or $512
That's $375 car payment
$71 gas
$17 gas taxes
$49 insurance
Medical: 3% or $95
Clothing: 3% or $95
That's $90 clothing
$5 sales taxes
Personal and Miscellaneous: 9% or $307
That's $290 spending
$17 sales taxes
Savings: 10% or $341
Here you'll eventually pay capital gains taxes if your savings accrue
Debt: 14% or $494
You're financing the sales taxes on things you bought with credit cards
These are realistic numbers, based on tax rates in my state, and they add up to the $3,415 monthly after-tax income. This assumes one is devoted to paying off debts and is setting aside 10% towards an emergency savings fund. You can see that there's only 9% left for personal & miscellaneous spending, which encompasses a lot of wants. A real budget like this one requires some discipline.
Clearly, paying off that debt will free up a substantial amount of money and help make the savings goal of 20% attainable, and even leave another 4% free for extra spending on wants.
But suppose this same budget was spent using that "balanced" method I mentioned first:
Savings: 20% or $683
Expenses: $1708
Wants: $1024
The good news is that by saving $683 every month, it'll only take 3 or 4 months to save up enough money to pay your bankruptcy attorney, whom you'll need by then if you live with a budget like this. After this household pays their mortgage payment, they'll only have $683 more dollars for Transportation, Food, Utilities, Medical, and Clothing. I can't think of a good reason to recommend such a budget. It's almost as if the author had some hidden agenda to set people up to fail.
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