
Hillside Books, founded by Holly Hill, is a U.S. bookkeeping firm based in Napa, California. Holly's clients tend to be $1M-$10M trade businesses, from HVAC and plumbing to electrical and mechanical services, running ServiceTitan and QuickBooks Online.
Before coming to Hillside Books, the AP operations for many of these businesses fell to a dispatcher, project coordinator, administrator, or even a spouse, who juggled AP alongside three other jobs. The damage shows up differently at each one. Holly has seen revenue overstated by hundreds of thousands of dollars from double-counted deposits, business-unit coding nobody could trust, and AP processes that lived in the last week of every month.
After spending years inside the trades industry, including leading the ServiceTitan migration for a large HVAC company, Holly decided to start a bookkeeping business that didn’t just take on trade clients, but specialised in them. Hillside is a ServiceTitan Certified partner that uniquely understands the challenges and real-world repercussions of poorly organized AP in trade services.
Holly's most robust package, the one that handles class-level coding, customer-job attribution, and full AP, is the one that consumes the most of her team's time. And the AP function inside that package is where the math breaks down.
Before MakersHub, Hillside’s AP process was a choice between two bad options. For some clients, Holly's team entered bills manually into QuickBooks: saving the PDF, attaching it, typing in the line items, the date, the GL code, the business unit, the customer. It was time-consuming, prone to error, and impossible to scale. For other clients, they’d have to import a CSV summary of the month's bills at month-end – which was faster, but gave the client no real-time view of their own AP, and shoved a month of work into a single pinpoint of time at the start of the next period.
Holly had tried the obvious tools: the ServiceTitan QuickBooks integration had real strengths in three-way matching, but its exports to QuickBooks Online generated random bill numbers instead of vendor document numbers, didn't carry business unit data, and required every product to be pre-mapped in QuickBooks or it would land in a ServiceTitan PO income account. It’s workable for an internal bookkeeper at a single company, but not for a firm serving many complex clients. Another tool, Ramp, has a bill module that couldn't read HTML email bills (common in the trades) or image-format invoices. It struggled to recognize multiple bills in a single PDF unless someone manually flagged them with email-split brackets. The conditional logic Holly needed for line-level coding wasn't there. By the time Holly's team had worked around all of it, Ramp took longer than entering bills by hand, and produced more errors at month-end.
All the efficiencies you would have gained from using a tool like this are lost. It actually ended up taking us a lot longer than just manually entering stuff in. It is just not a tool that's made for the trades


Holly Hill
Owner, Hillside Books
Instead of limiting herself to a simple price comparison, Holly's evaluation of MakersHub started with whether the product could handle the things that had broken every other tool: HTML email bills, multi-bill PDFs, image-based invoices, vendor credits, line-level coding, conditional logic that survives the chaos of how field technicians fill out a PO.
What surprised her was the absence of roadblocks. Not one feature, but the scope of what MakersHub could do
Two real workflows show what that flexibility looks like in practice.
The first is a counter-pickup approval rule for an HVAC client whose technicians were supposed to go through the warehouse for any equipment order, and didn't always. Holly built a rule in MakersHub that watches the ship-to field on every incoming bill. When the ship-to reads "counter pickup," the bill is automatically routed to the owner for approval before anything else happens. The owner now gets visibility, in real time, into every time a technician circumvents the warehouse.
The second is a customer-attribution workflow for a client who puts the customer's name in the PO field at order time. Before MakersHub, Holly was manually opening every bill, identifying the customer, cross-referencing ServiceTitan to see whether the job was complete, and calculating which costs needed to be journaled into a different period. Now MakersHub captures the PO field on every bill and writes it into the QuickBooks memo line. At month-end, Holly pulls one report from QuickBooks, one report from ServiceTitan, drops them into Claude, and asks which jobs need adjusting entries. A workflow that used to take hours is now a single prompt.
Two real workflows show what that flexibility looks like in practice.
The first is a counter-pickup approval rule for an HVAC client whose technicians were supposed to go through the warehouse for any equipment order, and didn't always. Holly built a rule in MakersHub that watches the ship-to field on every incoming bill. When the ship-to reads "counter pickup," the bill is automatically routed to the owner for approval before anything else happens. The owner now gets visibility, in real time, into every time a technician circumvents the warehouse.
The second is a customer-attribution workflow for a client who puts the customer's name in the PO field at order time. Before MakersHub, Holly was manually opening every bill, identifying the customer, cross-referencing ServiceTitan to see whether the job was complete, and calculating which costs needed to be journaled into a different period. Now MakersHub captures the PO field on every bill and writes it into the QuickBooks memo line. At month-end, Holly pulls one report from QuickBooks, one report from ServiceTitan, drops them into Claude, and asks which jobs need adjusting entries. A workflow that used to take hours is now a single prompt.
Even within my extreme niche, every business is going to have these little nuanced things they need in their workflows. I can't force them to do my exact workflow. MakersHub allows for that flexibility. It's the best software experience I've ever had.


Holly Hill
Owner, Hillside Books
When Holly first saw MakersHub's pricing, her reaction was direct: at that price point, she couldn't make money on her clients. She was on flat-rate billing with most of them. Adding a per-client software cost meant either eating it or having a hard conversation with clients who already felt like they paid Hillside Books to handle this.
What changed her mind wasn't a discount.
Holly's team tracks time by task category, like AP, AR, and reconciliations, even on flat-rate engagements. She pulled the AP time for each client, assigned an hourly value to her time and her employees’, modeled the time MakersHub would save, and ran a cost-benefit analysis. For some clients, MakersHub came out as a clear gain. For others, it was net neutral after rolling the cost into the existing flat rate.
The net-neutral clients are where the final decision happened.
I had to go back to what our core mission with the company is, and it's to provide accurate financials in a timely fashion that our clients can make informed business decisions on. Even if it was net neutral for us cost-wise, the fact that it was going to allow us to give our clients better insight and accuracy — that's what pushed it over the edge


Holly Hill
Owner, Hillside Books
First, no part-time hire. Before MakersHub, Holly was preparing to hire a part-time employee to absorb the AP load that came with growing the practice. That need is no longer on the table. The capacity MakersHub returned to the team has eliminated the headcount that growth would have required.
Second, a scalable path forward. Holly has been turning away clients who wanted Hillside to take on AP, not because she didn't want the revenue, but because she didn't want the management overhead of another bookkeeper. With MakersHub, she's bringing on additional clients and onboarding them onto the platform alongside the practice. The time and quality of output constraint that previously bounded Hillside has been removed.
Finally, a month-end without dread. Hillside's old month-end was stressful. Eevery reconciliation compressed into a few days, the dread of finding what got missed in Ramp, late nights before a sorely-needed vacation. By comparison, their most recent month-end was quiet. Holly was clicking around her dashboard on the 29th wondering what she'd forgotten.


Usually at month-end close, I am just frantic - how are we going to get this all done? I was going on vacation, and I was like, this should be more stressful than it is. Yesterday was the 29th, and I was clicking around looking for what I could work on. The idea of scaling doesn't sound as daunting anymore.

Holly Hill
Owner, Hillside Books
Holly's vision for Hillside Books isn't to become a thirty-person firm. It's to remain a small, deliberate, niche practice that grows on its own terms, and one that doesn't get left behind as AI changes what bookkeeping looks like.
I know AI is coming for me. I can either embrace it and adopt the tools that are going to allow me to stay relevant, or I can get left in the dust. Adopting MakersHub is one of those steps that's going to make me more resilient in this changing landscape


Holly Hill
Owner, Hillside Books
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