Tariffs, Tech Pressure, and Talent Gaps: Why Dealership Controllers Are Rebuilding Control in 2026

Monday morning, you open an invoice from a high-volume parts vendor and it looks familiar. Same vendor. Same category. Same kind of order you’ve seen a hundred times.

Then you spot it.

A new surcharge line. The total doesn’t match the PO. Someone forwards the email to parts. Parts forwards it to service. Service asks if it’s “real.” AP asks who should approve it. And you’re sitting there realizing this one invoice just turned into three inboxes, two follow-ups, and a variance you’ll probably see again next week.

That’s the controller version of tariff volatility. Not a headline. Not a policy debate. A pile of exceptions that starts quietly, then shows up later as margin noise, cash timing uncertainty, and close-week stress.

And if it feels like tariff rules are moving faster than your process can keep up, they are. In February 2026 alone, the Supreme Court struck down IEEPA-based tariffs, CBP stopped collecting them within days, and the administration pivoted to a new legal authority with a global surcharge. The rules changed before anyone had time to adjust.

What this means in the controller seat

Where it hits first: When tariffs get unpredictable, invoice exceptions spike. Those exceptions slow approvals, stretch cycle time, and make cash timing harder to predict. At most dealerships, you feel it first in the same place: PO-to-ready-to-pay.

How controllers feel it: Most people hear “tariffs” and think “higher costs.” Controllers hear “tariffs” and immediately see the follow-ups coming: PO variances, mystery line items, slower approvals, and vendors checking in earlier and more often.

It’s the unpredictability that reliably exposes what’s already fragile.

Steel and aluminum policy is a good example because it can affect downstream “derivative” products, not just obvious raw materials. Auto Care’s summary of Section 232 notes a 25% tariff rate (effective March 12, 2025) and that certain derivative products are included.

Translation for a controller: cost pressure rarely stays neatly in one bucket. It shows up as freight behavior, add-on lines, pricing shifts between PO creation and receipt, and supplier terms that change just enough to break your normal process.

The collision: tariffs, tech pressure, and talent gaps

Tariffs are the spark but fixed ops volatility, tech sprawl, and talent gaps are the fuel that's already loaded.

In a recent dealer direction survey, 85% of respondents said parts and service will be the primary driver of their business in 2026.

So, when volatility starts showing up as invoice variance and exceptions, it’s not hitting a side category. It’s hitting the part of the business that’s carrying the load.

Variance creates rework: In a stable environment, small process gaps are annoying but survivable. When things get volatile, the same gaps turn into repeat work. Mismatches show up more often, approvals slow down, and cash timing gets harder to call.

This isn’t just a rough week. It’s a real gap you can measure. Research from Ardent Partners shows the average invoice processing time is 10.1 days, with an average cost to process an invoice of $9.87, while best-in-class teams report 3.4 days and $2.81 per invoice.

That gap is what tariffs, surcharges, and fast-moving supplier changes exploit. Not because tariffs are “an AP problem,” but because exceptions stack up in the same bottleneck that already decides how predictable cash and close will be.

Tech sprawl slows answers: Most dealerships have plenty of systems. The friction shows up in the handoffs between them. The DMS is the hub, but you still bounce between OEM portals, bank tools, and whatever AP or document solutions were added over the years. When something doesn’t connect cleanly across rooftops, the gap usually gets filled with spreadsheets and email.

You can usually find the answer. You just can’t always find it quickly and consistently across rooftops. When volatility rises, slow visibility turns into delayed action, and delayed action turns into late fees, missed discounts, vendor holds discovered too late, and close-week fire drills.

Tribal knowledge risk: This is where controllers feel the risk most. When staffing is thin, it doesn’t take much for the process to become dependent on memory. It starts sounding like, “Ask the person who knows how cores and credits really work,” or “They’ll know why that vendor always needs cleanup.” That’s not a process. That’s a single point of failure.

And the staffing squeeze isn’t just happening in the accounting office. Fixed ops is feeling it too, which increases the downstream cleanup that eventually lands in AP. NADA notes the retail auto and truck industry continues to face a shortage of service technicians, estimating an annual shortfall of about 37,000 trained techs.

Add tariff-driven volatility on top, and those “judgment call” moments increase. More invoices need context, more approvals slow down, and more of the process leans on the same handful of people to keep everything moving.

What control looks like in 2026

This is where the usual advice can miss the point. It often jumps straight to “modernize everything” or “launch an initiative.”

Controllers don’t need another initiative right now. They need a way to absorb volatility without turning AP into constant cleanup.

In practice, rebuilding control starts looking like a few very specific shifts.

Map where chaos starts: Most controllers don’t need a global tariff tracker. They need a dealership-grade “variance map.”

It’s not fancy. Start with high-volume parts and service vendors, repeat credit and dispute offenders, categories where PO discipline varies by store, and anywhere receiving and documentation are inconsistent.

Once you can say, “If volatility hits, it hits here first,” surprises drop and control comes back faster.

Make exceptions visible: Tariff volatility doesn’t always show up as huge dollars. It shows up as more friction. One week it’s a pricing variance. The next it’s freight that wasn’t on the PO. Then a partial shipment, a missing reference, or a credit that never shows up. One invoice gets stuck, then three, then thirty.

The real turning point for a controller is when exceptions stop living in inboxes and side conversations and become visible work. When you can see what’s stuck, why it’s stuck, who owns it, and how long it’s been sitting there, you can manage by exception again. That’s what restores cash predictability and reduces close-week scramble.

Protect margin with PO discipline: Nobody wants “process policing.” Especially across rooftops.

But when volatility rises, PO discipline becomes a margin protection tool, not a paperwork request. The win isn’t perfection. The win is cutting down repeat exceptions.

That usually means narrowing your focus to the requirements that stop repeat mismatches from showing up in AP. Keep it simple: make sure the right fields are consistent, receiving is confirmed when it matters, and credits or cores have backup attached. That's what stops repeat mismatches before they turn into write-offs.

Done right, this doesn’t slow stores down. It reduces rework.

Build approval coverage: The post-ruling tariff environment is also a reminder that uncertainty isn’t going to politely wait for your team to be fully staffed.

When variance increases, you get more “should we approve this?” moments. Those moments slow approvals, and slow approvals blur cash timing.

This is why the foundational fixes matter: delegated coverage, clear aging expectations, and a workflow that doesn’t allow invoices to stall quietly because someone was out and nobody knew who had the ball.

Operate like a control center: The best controllers aren’t doing more work. They’re doing the same work with fewer blind spots.

They’re checking where variance is building, where approvals are aging, where credits and cores are stuck, which discounts are at risk this week, and what’s truly ready to pay. It’s not a “project” but a habit that prevents surprises.

This is also where the Supreme Court decision becomes more than news. It’s a reminder that external volatility can flip fast, and the safest move is building internal visibility and repeatability so you’re not reacting at close.

Turning volatility into control

The day-to-day impact: Tariffs may be the headline, but the day-to-day impact shows up in a familiar place: more exceptions, slower approvals, and less predictable cash timing across rooftops.

The dealerships that stay steady in 2026 won’t be the ones who guess policy changes perfectly. They’ll be the ones who can keep PO-to-pay moving with clear ownership, clean documentation, and fewer surprise bottlenecks.

Want a practical way to pinpoint where control is slipping? Start with our 90-Day AP Stack Checkup Every Multi-Rooftop Dealer Should Run. It walks through the pressure points that create rework and close-week scramble, plus a simple way to prioritize what to tighten first.