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Key Takeaways
- Among the most common financial mistakes, a scattered portfolio, old accounts, and overlooked documents can quietly drain wealth.
- Tax inefficiency and outdated beneficiaries often go unnoticed until it’s too late.
- If you want to prevent costly mistakes, make sure you have a clear financial plan that you regularly revisit and adjust as necessary.
Many people assume their finances are in decent shape—until a closer look reveals gaps that can cost them money, time, and peace of mind. Carolyn McClanahan, founder of Life Planning Partners, says new clients often arrive with portfolios and plans that don’t line up with their goals—or they sometimes don’t have a plan at all.
From failing to consider tax implications to neglecting your estate plan, here are five mistakes she sees again and again, and how to avoid them.
Mistake #1: Building a Portfolio without a Plan
Many investors collect funds over time without an overall strategy. McClanahan says the number one mistake she sees with new clients is a set of investments that are “haphazardly” chosen and “not congruent” with their goals. The result is often portfolios with excessive fees or poor tax efficiency.
The fix? Start with a financial plan that defines your risk tolerance and time horizon, then create an investment policy that guides allocation. For instance, McClanahan notes that someone nearing retirement who doesn’t want to face a lot of risk might be best served with a 50/50 mix of stocks and bonds.
Don’t Forget About Taxes
One area where a lack of planning shows up most clearly is taxes. McClanahan points to a common issue: having actively managed funds in a taxable account, which can trigger large dividend payouts and, as a result, surprise capital gains. By shifting those investments into tax-advantaged accounts—or replacing them with more efficient funds—retirees can keep more of what they earn.
Mistake #2: Forgetting About Old 401(k)s
Job changes often leave behind a trail of retirement accounts. “Another is having four or five 401(k)s from old jobs that have high fees or poor investment choices,” McClanahan says.
Consolidating accounts makes it easier to track performance, lower fees, and keep a consistent allocation strategy.
Mistake #3: Neglecting Your Estate Plan
An estate plan only works if it’s up to date and actually implemented. McClanahan often sees clients who haven’t taken the steps to implement their estate plan—or don’t have one at all.
Make sure your wills, trusts, and powers of attorney reflect your current wishes and are properly executed.
Mistake #4: Failing to Update Beneficiaries
Beneficiary designations often get overlooked, but they dictate who inherits many of your assets. McClanahan says a frequent issue is not having updated beneficiaries, which can cause assets to pass to the wrong person or bypass intended heirs altogether.
Reviewing and updating these forms regularly—especially after major life events—is a crucial part of not just your financial security, but your family’s, as well.
Mistake #5: Not Titling Assets to Trusts
Even if you’ve set up a revocable trust, it won’t work as intended unless your assets are properly titled. McClanahan notes that many clients fail to take this step, leaving property outside the trust. That oversight can lead to probate and unintended complications.
To avoid this, confirm that deeds, accounts, and other assets are titled in line with your estate plan.
The Bottom Line
From scattered investments to outdated estate paperwork, small oversights can have big consequences for your finances. McClanahan emphasizes the value of creating a plan and revisiting it regularly: Consolidate accounts, align investments with goals, and ensure all legal documents are up to date. A bit of organization today can prevent costly mistakes down the road.
