10 Financial 'Rules' You Should Start Breaking Now You should always max out your 401(k) and save for your kid's college education in a 529 plan, right? Maybe not. Most experts have long touted a number of practices that may actually be working against you. These are the top 10 money rules you should break -- and what you should do instead. 1. You need six months of living expense in cash This is the granddaddy of them all. Start to type "emergency" into Google (GOOG), and the first suggestion is "emergency fund." The rule is to make sure you have six month's of living expenses tucked away in cash in case you losefyour job or suffer a financial setback. Of course it's important to have a financial safety net, but when you earn virtually nothing on your cash, this rule can cost you. For example, if six months of living expenses for you is $25,000, you'd be sacrificing close to $1,000 of income a year by keeping this money in a checking or money market account. For years, I've broken the mold on this financial rule by telling clients they shouldn't have their emergency fund in cash. Instead, choose a short-term bond fund that pays 3 percent or higher for your safety net. If you need the money quickly, you can easily sell the fund and get access to the cash. If you don't need the cash –- and these emergency fund accounts are rarely used –- you can still make money on the assets. 2. Max out your 401(k) Not so fast. There are many good reasons to contribute to a 401(k), such as tax savings, tax-deferred growth and a possible employer match, but there are also good reasons not to contribute as well. Don't blindly dump money into your 401(k) if you don't have an emergency reserve of some sort and there is a chance you will be laid off. It is taking longer for most to find a job, so if you think you may be out of work, make sure you have the resources to pay rent and buy food until you land a new job. Also, if your employer doesn't provide a match and you are in a low-income tax bracket, it may make more sense to pay the tax now (since you are in a low tax bracket) and invest in a Roth individual retirement account instead. Use this 401(k) vs. Roth IRA calculator to crunch the numbers. 3. They key to financial success is cutting expenses You cannot cut your way to wealth. Too many people and financial advisers focus on trimming expenses when they should be focused on the other half of the equation -- income. I'm a proponent for living within one's means, but too often that creates an artificial barrier or ceiling. "This is what I make, so I have to cut back to save more," is often the thought process. Rather than living within your mean, work on increasing your means. There are many ways you can make more money, including asking for a raise, boosting your skills –- your human capital –- and getting a promotion, starting a side project in the after-hours or going back to school and starting a new career. What you make today is not necessarily what you can make tomorrow. Cut unnecessary expenses and then use your energy to increase your income. 4. Fully fund a 529 account to save for college expenses You should only save for your children's education if you can afford it. That means when you're on track to having enough assets for your retirement. Assuming you have the retirement assets and now want to save for college, most advisers will recommend a 529 college savings account. Not so fast. These 529 accounts have some real advantages, such as tax-free growth of contributions if they are used for approved higher education expenses. This tax-free growth is a big benefit. However, if you withdraw money from this account and do not use it for approved higher education expenses, the gains will be subject to ordinary income tax and a 10 percent penalty. The big risk is if you fully fund your child's college education but he or she decides to not go to college, drops out, finishes early or goes to a less expensive school. You have the ability change the beneficiary to another qualifying family member without penalty, but if you have just one child, there may not be anyone you can transfer the funds to. You would then have to liquidate the account and pay the tax and penalty. If you are undeterred and still want to pay for your child's college education, start with a small contribution into the 529 and fund up to a maximum of 60 percent of the cost in case one of the above scenarios occur. 5. It's always better to buy a car than lease The average age of cars on U.S. roads is 11.4 years. So if you're average, then it may make sense for you to buy a car -– especially a car a year or two old –- instead of leasing. However, if you do not intend on driving the same car for over a decade, a lease may be a much better option. A new study by swapalease.com found it was better to lease than buy based on its criteria. And under certain circumstances, you may be afforded a larger business deduction with a lease compared to a purchase. cars