Twenty years in the field.
Built for what comes next.

KS Custom Business Services started in the trades — HVAC, plumbing, electrical, roofing — and that’s still where our deepest expertise lives. The same rigor we bring to a field-service operation translates to any small business that needs a dedicated financial team, direct access to the people doing the work, and books they can actually trust.

Kimberley Simmons didn’t come up through public accounting. She came up inside the back offices of field-service companies — companies where the workday started before sunrise, where job tickets piled up faster than anyone could file them, and where the difference between a profitable quarter and a survival quarter came down to whether the books told the truth.

That’s where she learned what most bookkeepers learn from a textbook, except she learned it the way contractors learn anything — by doing it, breaking it, and figuring out how to do it right the next time. Job costing for an HVAC install isn’t an academic exercise when you’ve watched a company lose money on every other job because nobody knew which department was bleeding. Departmentalized P&Ls aren’t a feature on a software brochure when you’re the one rebuilding a chart of accounts at 9 PM because the owner needs to know by Monday whether to hire another tech.

Twenty years of that. Across HVAC, plumbing, electrical, roofing, appliance repair, tree services, paving — the trades that don’t get written about in business books but keep the country running. The software contractors actually use: Aptora Total Office Manager, QuickBooks Desktop, QuickBooks Online. Not the software vendors prefer to sell. The software contractors run their businesses on.

KSCBS came out of that work. It started because contractors kept asking Kimberley if she could just do their books, too — and because she’d seen enough remote arrangements done badly to know what doing it right would look like. Direct access. Books that match how the business actually runs, not how the software wants them to look.

The trades are where the firm started and where its deepest fluency lives. But the discipline that field-service work demands — clean job costing, real-time clarity, financials that drive decisions instead of describing them — that translates. To horse farms running payroll for seasonal labor. To distributors tracking inventory across regions. To app companies trying to figure out what an annual budget should even look like. To any owner-operated business that needs a financial team, not a generalist with a login.