In 2010, Marcus Dillon sat down to hand-write more than 50 letters to retiring CPAs, asking if they’d be willing to sell their practices. One of those letters launched Dillon Business Advisors, a firm that grew from a $400,000 acquisition into a multi-million-dollar advisory practice by strategically reinventing itself every five years.
On a recent episode of the Who’s Really the Boss? podcast, Marcus and Rachel Dillon celebrated the firm’s 15th anniversary by sharing its origin story and the evolution of DBA. In the first of a two-part series, they walked through specific revenue numbers, margin targets, acquisition details, and the personal sacrifices behind each phase of growth.
The Foundation: High School Sweethearts to Business Partners
Marcus and Rachel’s story started long before DBA. They met in driver’s ed at 15 and 16 and have been together ever since. By their first wedding anniversary, they had a one-and-a-half-month-old daughter, Kinley. That young family shaped every business decision that followed.
Marcus came out of Ernst & Young’s audit practice, where travel demands didn’t work for family life. He landed at a smaller Houston-area firm with around 15 employees and under $2 million in revenue. The owner took a chance on a 23-year-old kid to build an audit practice from scratch.
“I was able to get paid 45% of my effective billings, including write-ups,” Marcus said. “So I learned really early on how to price things so it was acceptable to clients.”
At his peak, he was billing close to $400,000 a year and taking home up to $180,000. But Rachel noticed a problem. Marcus had to match the owner’s hours, and he would stay at the office until 11 p.m., midnight, or sometimes 1 a.m.
“I didn’t want to be a single mom,” Rachel explained. “I was a teacher getting off at 4 p.m. and wondering, where is my husband and the father of my kids?”
DBA 1.0: Building Through Acquisition (2011-2016)
The Dillons prepared carefully for acquiring a firm. They paid off every debt except their mortgage. Rachel kept teaching for a steady income and benefits. Then Marcus wrote those letters.
One landed with Bob, a CPA in his 70s or 80s, who recently had a health scare. First Command Bank financed about $320,000 of the $400,000 purchase price. There was a 10% seller note, and Marcus brought 10% cash to closing.
Unexpectedly, clients followed Marcus, despite his non-compete agreement with his old firm. He fully honored the agreement, paying a third of the collections back to his former employer for three years. But the client migration pushed DBA from $400,000 to about $700,000 almost immediately.
The first office wasn’t glamorous. Marcus inherited a lease in what he calls a Class D building right off a major Houston interstate. “It had the old school atrium, and it just smelled like crap whenever they brought new mulch and plants into that atrium,” he recalled. He worked alone until 9 or 10 p.m., and his was often the only car in the parking lot.
Rachel’s first day at DBA in 2013 was moving day. “I remember doing a couple of collection calls on the floor as we were packing up,” she said. “I was not coming to work with you at the other place regularly.”
By then, they’d built their own 2,500-square-foot standalone office, figuring, if they were paying rent, they might as well pay it to themselves.
From the start, the Dillons prioritized same-day invoicing. Returns would flow to Rachel for client delivery, then straight to Marcus for billing that same day. “That’s something that was always a priority to get done immediately,” Rachel noted. “I hear some people spend days doing billing and invoicing, sometimes months after the fact.”
That diligence paid off. By 2016, DBA reached $1.5 million in revenue. The Dillons had paid off the acquisition loan and bought a lake house. They were successful, but as Marcus observed, “Every time someone wished me success, it was because I had just gone into debt.”
DBA 2.0: The Merger That Taught Them to Let Go (2016-2020)
In 2016, Marcus had breakfast with his mentor, Tom, who was winding down his practice. Marcus asked a question he now admits was the wrong way to evaluate an acquisition: “How would we be worse off by coming together?”
Tom brought about $400,000 of work, pushing DBA past $2 million. On paper, it looked perfect. In practice, it was a disaster.
“Tom’s clients loved Tom,” Rachel said bluntly. “Tom’s clients hated us.”
These weren’t just any clients. They were survivors of three or four rounds of exits, and they stayed for Tom personally. Plus, Tom’s service model was completely different. He offered every client two in-person meetings during tax season. DBA didn’t operate that way.
Meanwhile, the Dillons built a 12,000-square-foot office building: 7,000 for DBA, 5,000 to lease out. Marcus describes it as having “an attorney feel with wood wainscoting and leather-bound books.” It was supposed to be their forever office.
But the cultural problems didn’t solve themselves. So DBA started strategically shedding clients.
They spun off about $100,000 to their friend Julie, who mentioned she wasn’t as busy as she’d like. “She made that mistake of telling us that,” Marcus joked. Another $100,000 went to a CPA closer to Tom’s office. The next year, they went bigger, spinning off $250,000 along with Tom’s office location.
In total, DBA shed about $450,000 in client work. Yet they never dipped below $2 million in revenue. “That was definitely a consideration,” Rachel explained. “We never wanted to dip below $2 million.”
By 2019, things had stabilized. The team was mostly part-time working parents who arrived at 9:30 and left by 2:30 to match school schedules. All work happened in the office.
Then came January 2020. At their annual team retreat, Marcus asked, “If you could do anything in this life and not fail, what would you do?”
The leader of their audit practice answered, “I would be a stay-at-home mom.”
“When you have a leader in the firm respond that way,” Marcus reflected, “it’s like, okay, this is likely not going to be the person to help lead that aspect of the business.”
By March, the COVID-19 pandemic sent the team home, and they never came back. DBA funded home office setups and kept the physical office available. Nobody used it.
The audit practice spun off during 2020. Tom pursued receivership work full-time. And DBA hit $1 million to the bottom line for the first time, maintaining 40-45% margins before officer compensation. That’s a target Marcus has carried since his days at his old firm.
But remote work didn’t mean balance. “We did the kids’ routine of dinner, activities, bath, and bedtime,” Rachel said. “And then we just went straight back to work again for the next three or four hours.”
The Hard-Earned Wisdom of 15 Years
Looking back, Marcus is clear about what drove their early success. “We were successful because we put the hours in. We weren’t necessarily working smarter. We just worked more than others around us and said yes to others around us, which doesn’t work anymore.”
Other firm owners likely recognize patterns in the Dillons’ journey:
- Financial preparation matters. They eliminated personal debt and kept Rachel’s steady income before taking the acquisition risk.
- Invoice immediately. Same-day billing became a cornerstone cash flow practice. You have to send out the invoice to get paid.
- Not all acquisitions are equal. When clients survive multiple rounds of exits, they’re bonded to a person rather than a firm. Tom’s clients proved that.
- Set a revenue floor and defend it. DBA shed $450,000 in work but never went below $2 million because organic growth and price increases filled the gaps.
- Listen when people tell you who they are. One honest answer at a team retreat revealed the future of an entire service line.
- Hours aren’t everything. The model that built a $1 million firm through sheer effort won’t build the next phase.
Growth isn’t just about what you build. It’s about what you’re willing to walk away from, whether that’s clients who don’t fit, service lines that aren’t growing, office space you no longer need, or the version of your firm that got you here but can’t take you further.
This is just the first half of DBA’s 15-year story. In part two, Marcus and Rachel will share how the firm evolved after the pandemic, what they’re seeing in today’s market, and where they believe the profession is headed. For now, listen to their full conversation in Part 1, including all the specific numbers, deal structures, and decision points.
Rachel and Marcus Dillon, CPA, own a Texas-based, remote client accounting and advisory services firm, Dillon Business Advisors, with a team of 15 professionals. Their latest organization, Collective by DBA, supports and guides accounting firm owners and leaders with firm resources, education, and operational strategy through community, groups, and one-on-one advisory.
