15 Estate Planning Mistakes That Can Cost Families $100,000+

Estate planning isn't just for people who have land and titles to pass down. It's about making sure your money, property, belongings, and even final remains are handled how you want, so your grieving loved ones aren't mired in mess and indecision.

Despite this, many people have misconceptions about estate planning or don't have current plans in place. Mistakes can lead to delays, major family strife and major tax implications. Taking the time to get things right (and make sure they stay that way) can protect your legacy for generations to come.

Here's a look at the most common estate planning mistakes that people make, including those who have a valid will in place.

More than half of Americans agree estate planning is important, yet only 33% have formal arrangements in place. This includes wills, trusts, or guardianships. Make sure to set up a plan, otherwise your assets could go through probate, or Uncle Sam and your ex-spouse may wind up splitting the proceeds.

Wills aren't set up to hand down all of your assets. Many, such as retirement accounts and life insurance policies, are passed down to your designated beneficiaries.

If you forget to name or update your beneficiaries, your money may wind up going to an ex-spouse or only two of your three children. Make sure to regularly review and update these designations.

As someone who worked in estate collections for the better part of my twenties, this was the most common estate planning mistake I saw: people confusing a will with an estate plan.

A will can help make your wishes a little bit clearer, but it won't save your heirs from the time and cost of probate court. Assets still need to go through that process, where creditors can file claims (often getting first dibs on assets). There are also court fees, taxes, and other liabilities to contend with.

A revocable living trust can help you avoid probate and provide greater control in the distribution of assets.

Gifting assets to your kids during your lifetime can trigger capital gains taxes. It requires some strategy. Many planners recommend that you do not gift appreciated assets to kids, but instead give them cash and donate physical assets to a charity.

Once you turn 18, you're legally an adult. Parents can no longer make medical or financial decisions for you, but a basic plan, including a healthcare directive and power of attorney, protects you in case of emergencies.

This allows them to talk to your care team if you are injured, or to access your bank accounts to pay your bills if you're incapacitated.

If you have kids or assets outside retirement accounts, many planners recommend establishing a trust. This set-up can make transferring assets faster and more practical. It can shield inheritances from creditors, support children with special needs, and prevent family conflict.

Many people go through the time effort of creating a trust, but then forget to transfer assets into it. This renders the trust useless. Make sure to re-title your accounts, proper deeds, and other major assets.

Life changes. Marriages, divorces, births, new laws, relocations, and other major events happen. If your estate plan is not continually adjusted to reflect these changes, it may leave out (or include) the wrong people and conflict with current wishes.

Many experts recommend revisiting it every couple of years or after any major life event.

Even if you're exempt from federal estate tax (with the limit at $13.99 million for 2025), many states still tax inheritances. Make sure to familiarize yourself with local state laws.

Your estate plan shouldn't live in a vacuum. Coordinating it with retirement planning and other financial goals can reduce your overall tax liability, increase your charitable giving impact, and help pass on wealth and money management skills to your kids.

It's uncomfortable, but having conversations about inheritances now can prevent ugly surprises later—especially in situations with blended families or unequal distributions. Transparency now, while you're alive, helps manage expectations.

Estate law is complex, and even a minor mistake can have significant consequences for your family. Hiring an estate attorney (many offer flat-fee packages) ensures your documents are valid and your plan works the way you intend.

Many DIY online portals do exist, however, they may not take into account the nuances of existing state laws, changing federal and state laws, or changes to your family structure and end-of-life wishes.

An estate plan is more than just a will; it also needs to include documents for financial and medical powers of attorney, a list of major assets (and how to access them, including online passwords and logins), funeral instructions, and more.

From cryptocurrency wallets to YouTube channels to iCloud storage, digital assets can hold real financial and sentimental value. Assign a digital fiduciary and document access instructions. Revenue-generating assets, like blogs or podcasts with ad revenue, may need to be included in your will or trust.

Just because Junior is the oldest child and head of the family doesn't make him the best suited to handle the complex legal and financial decisions that go into managing an estate. Choose an executor who is trustworthy, organized, and emotionally neutral.

Estate planning is a living, evolving process to protect you, your family, and your asets—now and after death. While you may think everything is in place, even small oversights can leave massive tax burdens, legal delays, and bitter family acrimony.

Now is the time to get it right (and keep getting it right), and to get your finances square. Talk to a planner the best estate plan, and while you're at it, you can crush your tax debt and retirement planning too.