
Private advisory for CPA firms and owner-led professional service businesses navigating growth, capacity, profitability, leadership and change. We help strengthen the business behind the client work so growth creates more profitability, more capacity and more options for the owner.

The firm grows. The team grows. The client work gets more complex. But sometimes the way the business operates is still built around the owner.
Revenue is up. Is profitability keeping pace? You hired good people. Why do the unusual decisions still come back to you? You invested in technology. Did the way the work gets done actually change?
And when a key person leaves, does important client history and context leave with them?
That is next-stage work. The business has to catch up with what you have built.
If you stepped away for 30 days, what would still wait for you? Which decisions, client issues or approvals would stop until you came back? The answer tells us a lot about how the business is built.

I’m Katrina Carrington, CPA, MBA, The Next-Stage CPA. I built and operated my own CPA firm for more than a decade and ultimately sold it.
That experience taught me that being good at the work and building a strong business are two different jobs. As the business grows, the owner’s role, the team, the systems, the technology and the economics all have to mature with it.
I also stay close to how emerging AI tools are changing accounting and finance, including where they can strengthen research, analysis, workflow and quality control without replacing professional judgment.
My work is about helping CPA firms and owner-led professional service businesses strengthen what sits behind the client work so the business can support whatever comes next.

The Keystone Business Infrastructure Review is where we connect the dots.
We look across the numbers, tax strategy, operations, technology, team and the owner’s role in the business to understand what is actually getting in the way.
You leave knowing what matters, what needs attention first and what can wait.
Then you decide whether to handle the roadmap internally, bring Keystone Crest in to help implement it, or keep us close as an ongoing advisor.
We figure out what is really going on, what matters most and what should happen first. You leave with a clear, prioritized roadmap.
Then we help make the changes real...from reporting and tax planning to workflow, technology implementation, team adoption and accountability.
As the business grows and the decisions get bigger, Keystone Crest stays close enough to help you think through them before they become expensive problems.
Maybe you want better margins. A stronger leadership team. Technology that actually saves time. A real vacation where you are not quietly running the firm from your phone.
Maybe you want to grow, acquire, step back, transfer the business, coordinate it with your estate plan or eventually sell.
You do not need to know the ending yet. You do need a business strong enough to give you choices.
Improve profitability, reporting, tax decisions, workflow and capacity so growth creates a stronger business...not simply more work.
Build a team that can find what it needs, make decisions, carry responsibility and move the business forward without everything coming back to you.
Maybe you eventually sell. Maybe you transfer it. Maybe you keep it. The point is to build a business strong enough that you get to choose.
We help CPA firms and owner-led professional service businesses strengthen the business behind the client work. That can include reporting and profitability, tax strategy, pricing, workflow, technology implementation, team capacity, owner dependency, growth and succession. We work especially closely with accounting firms and select real estate professionals facing those same next-stage challenges.
We start by figuring out what is actually creating the bottleneck. If the problem is unclear, a Keystone Business Infrastructure Review may be the right first step.
If you already know the issue is workflow, technology, tax planning, team handoffs or implementation, we can scope that work directly. I do not believe in adding an assessment just because it gives us something else to sell.
Both, depending on what the business needs. Sometimes the right next step is a focused assessment and roadmap. Other times the problem is already clear and the real need is implementation.
Keystone Crest can help design the process, build workflows and automations, improve handoffs, create operating structure, and help the team put the changes into practice. The goal is not to hand you a report and disappear.
No. You may simply want better margins, better information, a stronger team, technology that is actually being used well or a business that does not need you quite so much. If succession, transfer or a sale becomes part of the conversation later, the work you do now should give you more options then.
Yes. In fact, we prefer it. Your internal team, CPA, attorney, bookkeeper, wealth advisor, technology providers and other professionals each bring something important. Keystone Crest helps connect the dots so the process, people and technology work together instead of living in separate conversations.
Engagements are scoped around what needs to be accomplished, the complexity of the business, and the level of implementation support required.
You will know the deliverables, timeline, investment, and what success should look like before we begin.
Usually not. A lot of firms do not have a software problem. They have an implementation problem.
You may already have TaxDome, GoHighLevel, QuickBooks, scheduling tools, document portals and other technology in place. We first look at how the work should move, then determine whether the tools you already have can support that process before recommending anything new.
That also includes emerging AI tools where they can support research, analysis, workflow and quality control. The technology should strengthen the work, while professional judgment and client service stay at the center.
Better numbers. Better systems. A team that can carry more. Technology that actually works the way it was supposed to. More room for you to lead and more choices about what comes next.
This conversation is for CPA firm owners and other owner-led professional service businesses, including select real estate professionals, that have reached the point where the way they operate needs to catch up with what they have built.