Locally based CPA firm since 1956

About Us

Williams, Steinert, Mask is a third-generation family-owned accounting and investment firm in San Antonio, Texas. At Williams, Steinert, Mask, it’s important to know that, as a client, you’ll become part of our extended family. That’s not just a statement, it’s a promise. 

The Williams, Steinert, Mask team is invested in the success of our community and passionate about helping our clients achieve prosperity. Built on a foundation of family values, innovative thinking, integrity, respect, and hard work, the partners at Williams, Steinert, Mask are proud to be a part of San Antonio’s continued growth.

As a homegrown business with over 60 years of experience, we're not just here for today, but for tomorrow and decades to come

– George “Chris” Williams, Partner

Our Core Values

Treat People
Like Family


Do the Right

Work Hard

Be Responsive
with Respect

Improve Yourself

Our Purpose

To have a positive impact on our community.

Brand Promise

Williams, Steinert, Mask is focused on developing relationships with our clients and taking care of them like family.

Our mission is to help our community reach financial prosperity.

Treat People Like Family

As a family-owned business, the team at Williams, Steinert, Mask is not only committed to treating each other like family but every single person that interacts with our company. From clients to organizations we volunteer with, showing respect and kindness is our number one goal every day.

Think Innovatively

When you hire Williams, Steinert, Mask you don't just hire one person, you hire an entire team that will work with you to get the best results for you. Thinking outside of the box to find what will work best is one of the things that makes WSM unique and we're proud of that quality. 

Do the Right Thing

Doing the right thing for our clients, for our employees and for our community is at the heart of what drives our company and is a chief motivator among our staff. As a team, we area always striving to be honest, trustworthy and dependable for everyone we come into contact with.

Work Hard Together

Williams, Steinert, Mask is a team of skilled individuals and we believe that our talents are best utilized when they are combined. You can expect a team of our employees to work with you to help find the best outcome.

Be Responsive with Respect

Putting our clients first is a top priority for the Williams, Steinert, Mask team, but treating everyone with respect and being in regular communication is our bread and butter. Making sure we are available to our clients is crucial to living out our other core values.

Improve Yourself Everyday

The company culture at Williams, Steinert, Mask is designed to foster growth and encourage professional and personal development because we truly believe that we best serve our clients when we are, ourselves growing and improving as individuals and as a team.