O'Brien Estate Law is your trusted estate planning attorney and adviser serving Oak Park, River Forest, Forest Park, and the Chicago area.

What’s the Difference Between a Will and a Trust?

When it comes to estate planning, one of the most important decisions you’ll make is how your assets should be handled after you’re gone. Two of the most common estate planning tools are wills and trusts. While both help ensure your property goes where you want it to, they function very differently. Understanding the difference between a will and a trust can help you choose the best option for your needs.

What Is a Will?

A will, formally called a last will and testament, is a legal document that explains how your property should be distributed after your death. Wills are simple to create and give you several important options, including:

A will only becomes effective after you pass away. Until then, you can update, change, or revoke it at any time as long as you are mentally capable.

However, wills must go through probate, a court-supervised process that verifies the will and oversees asset distribution. Probate can take months to complete and may involve legal fees, court costs, and help from professionals like accountants or financial planners. Because probate is a public process, your will becomes part of the public record.

What Is a Trust?

A trust is a legal arrangement that becomes active while you’re still alive. The person creating the trust, the grantor, transfers assets into the trust, and a trustee manages those assets according to instructions laid out in the trust document.

Trusts offer flexibility, control, and privacy. There are many types of trusts, but two common ones include:

  • Revocable living trusts: Allow you to manage your assets during your lifetime and ensure a smooth transition if you become incapacitated. These trusts can be changed or revoked at any time while you’re alive.
  • Irrevocable trusts: Cannot be changed once created and are often used for asset protection or tax planning. In many cases, a revocable trust becomes irrevocable when the grantor dies.

One of the biggest advantages of a trust is that it avoids probate. This means your assets can be distributed more quickly and privately, without being made part of the public record.

Will vs. Trust: Key Differences in Privacy and Control

Although both tools help you distribute your assets, they differ in several important ways:

  • Timing: Wills take effect only after death; trusts take effect during your lifetime.
  • Privacy: Wills go through probate, making them public; trusts are private and do not go through probate.
  • Flexibility: Wills are easy to update; revocable trusts are flexible while you’re alive, and irrevocable trusts offer long-term protection but cannot be changed.

How to Decide Between a Will and a Trust

Choosing between a will and a trust depends on your goals, the complexity of your assets, and your desire for privacy.


A will may be sufficient if your estate is simple and you don’t mind the probate process.


A trust may be the better choice if you want to avoid probate, protect privacy, or manage assets during incapacity.

Many people benefit from using both: a trust to control major assets and avoid probate, and a simple will to handle any remaining property.

In conclusion, understanding the differences between wills and trusts is crucial for effective estate planning. Consulting with a lawyer you trust to help you based on your individual needs to make sure your wishes are carried how you want them to be. Click the link below to set up a meeting with O’Brien Estate Law, LLC, where we can discuss your specific situation and guide you towards a comprehensive estate plan.

Schedule a call here.

Remember, this information serves as educational and informational content only and is not a substitute for legal advice. Before making any changes to your estate plan, consult with a lawyer you trust to ensure your decisions align with your individual needs and circumstances.