How a Fast Casual Restaurant Increased Revenue and Efficiency with Toast

Running a fast casual restaurant requires precision and visibility across every part of the business. For Tuna Kahuna, a Poké inspired concept founded a decade ago, growth was initially limited by disconnected tools and a lack of operational insight.

By switching to Toast, the team streamlined operations, improved inventory tracking, and ultimately increased daily revenue, all while creating a better experience for both staff and guests. Here’s how they did it. 

Why a fast casual restaurant had to switch POS systems 

Day-to-day operations in a busy restaurant require dependable technology. Before Toast,  the red flags were hard for Tuna Kahuna to ignore.

The cost of limited visibility and disconnected systems

As the business grew, its existing setup couldn’t keep up. Chef and Co-Owner Doug Wong put it plainly: “[Square was] better than a calculator and a cash drawer—but at the end of the day we had zero visibility into our business.” 

With no reliable read on sales or inventory, Wong had found an unlikely dashboard: “Our bank account was our best barometer of how we did."

At the same time, core operations were fragmented across multiple tools. Employees clocked in through a separate system, while payroll required manual calculations of hours and tips. Scheduling was handled in Excel, and communication lived in group texts.

This lack of integration created inefficiencies across the business and made it harder to scale.

Switching to an all-in-one POS system for fast casual restaurants 

As more restaurants around them adopted Toast, the Tuna Kahuna team took notice. “Every restaurant, large and small, was gradually adopting Toast—we were like, what is going on?”

The more they looked into it, the shorter the conversation got: “Once we understood Toast, it became kind of an obvious answer for us,” Wong says.

The staff’s reaction caught them off guard. Wong recalls, “You always worry—are we going to get pushback from staff? In fact, it was the exact opposite. They championed Toast more than we did.” 

With hands-on onboarding and implementation support, the transition was quick and smoother than expected.

How Toast streamlined operations for a fast casual restaurant

With an all-in-one POS system in place, Tuna Kahuna consolidated key parts of its operations into a single platform.

Payroll had been one of the most time-consuming parts of Wong's week. “Before, I had to extract hours and tips and calculate everything myself. Now it's all in one place.” 

Replacing spreadsheets and group texts with a single tool changed how the team operated day-to-day. “Sling became just kind of a central hub for employees and staff to communicate… it almost schedules itself."

For a team that had been running without inventory tracking entirely, the shift was significant. “Now we know exactly what we sold, what we ordered, what our yields are—everything."

How a better POS increased revenue and improved the guest experience

With greater visibility and more efficient operations, Tuna Kahuna began to see measurable improvements across the business. A lot of the gains came down to a single moment at the door. “Customers come in, scan the QR code—they're no longer frustrated waiting in line.”

Wong didn't need to reach for complex metrics to explain what changed: “We get more orders per day, our revenue goes up, our staff gets bigger tips—everybody's happy."

Reservations filled in a gap the team hadn't fully accounted for. “We went from 60–70% capacity to 100% capacity.” 

Why Toast works for fast casual restaurants

Fast casual restaurants operate in a high-volume, fast-paced environment where speed and efficiency are critical.

An all-in-one POS system helps by:

• Reducing wait times and friction in ordering

• Increasing throughput and order volume

• Centralizing operations across payroll, scheduling, and inventory

• Providing real-time insights to optimize performance

For Tuna Kahuna, this meant not just running a smoother operation, but unlocking the ability to scale.

Built for expansion: How the right POS supports restaurant growth

The operational foundation is there now in a way it never was before. “Now that we can understand and track everything, we're in a better position to expand than we ever were before.” 

From new locations to larger venues, the team now has the operational foundation to support their ambitions.

Fast Casual Restaurant POS: Frequently Asked Questions 

What is the best POS system for fast casual restaurants?

The best POS system for fast casual restaurants supports high order volume, fast service, and integrated online and QR ordering, while giving operators real-time reporting to make smarter decisions. Toast is built specifically for this environment, combining all of those capabilities in one platform.

How can fast casual restaurants increase order volume?

Fast casual restaurants can increase order volume by reducing wait times, enabling mobile and QR ordering, and using POS data to optimize menu performance and staffing.

Why do fast casual restaurants need integrated systems?

Fast casual restaurants rely on speed and efficiency. Integrated systems reduce manual work, improve communication, and help manage high transaction volume without slowing down service.

What POS system does Tuna Kahuna use?

Tuna Kahuna uses Toast, an all-in-one POS system designed for restaurants. The fast casual concept switched to Toast after outgrowing its previous setup with Square, which lacked the operational visibility and integrations the business needed to scale.

Why did Tuna Kahuna switch from Square to Toast?

Tuna Kahuna switched from Square to Toast because Square offered limited business visibility and no integration between key operations like payroll, scheduling, and inventory. Co-Owner Doug Wong noted the team had no reliable way to track sales or inventory, and relied on their bank account to gauge daily performance.

What is the best POS system for fast casual restaurants?

An ideal POS system for fast casual restaurants should centralize ordering, payroll, scheduling, and inventory in one platform. Toast is a popular choice for fast casual concepts because it reduces wait times, increases order throughput, and provides real-time operational insights.

How did Toast help Tuna Kahuna increase revenue?

Toast helped Tuna Kahuna increase daily revenue by reducing ordering friction through QR code ordering, which decreased wait times and increased order volume. The restaurant also went from 60–70% seating capacity to 100% capacity after implementing Toast's reservation features.

How does an all-in-one POS system help restaurants scale?

An all-in-one POS system helps restaurants scale by consolidating operations — including inventory tracking, payroll, and staff scheduling — into a single platform. This eliminates manual processes, improves visibility into business performance, and creates a more efficient foundation for opening new locations.

How long does it take to switch POS systems in a restaurant?

With hands-on onboarding and implementation support, the transition to a new POS system can be quick and smooth. Tuna Kahuna reported that staff embraced the switch to Toast faster than expected, with minimal pushback during the transition.