For years, accounting firms have treated staffing pressure as a recruiting problem. AICPA & CIMA reported that accounting graduates fell to 55,152 in the 2023-24 academic year, down 6.6% year over year, even as firms reported a stronger hiring outlook. Reuters also reported that the U.S. accounting workforce declined by about 10% from 2019 to 2024.

But hiring alone does not increase the amount of work a firm can deliver. A firm can add staff and still struggle to move returns, audit workpapers, monthly closes, and advisory deliverables through the system on time. In many firms, the real constraint is how much quality work the firm can complete without overwhelming partners, creating rework, or stretching timelines.

Why firms stay capacity-constrained after they hire 

Many firms add people into operating environments that are already inefficient. New staff often walk into a mix of email threads, partner preferences, scattered checklists, and inconsistent handoffs.

Take a case where a firm hires two new seniors before busy season. One manager reviews in the tax software. Another leaves comments in PDFs. Client documents come in through email, portal uploads, and shared drives. Staff spend time figuring out where files live, how that partner likes workpaper references, and which version is current. The firm added labor, but it also added more coordination to work, more questions, and more review churn.

That lines up with The Tax Adviser’s guidance on firm efficiency. The publication recommends standardizing processes, streamlining workflows, documenting procedures through SOPs, and using technology to reduce manual work and errors. It also notes that better process design shortens onboarding time for new team members and supports more consistent service delivery.

Manual work drains capacity in small increments

A lot of lost capacity comes from routine work that firms accept as normal.
Staff lose time to routine admin work like manual data entry, repeated client follow-ups, and moving information between disconnected files. Each task seems minor, but together they drain hours from every engagement.

That is why firms are putting more emphasis on automation and AI. Journal of Accountancy noted that using AI strategically to automate tasks can streamline workflows and free up capacity, helping firms shift effort toward higher-value services.

A clear example is client document collection. If every request is handled manually by email, staff spend time writing follow-ups, saving attachments, renaming files, and checking whether the latest version has been received. A portal with standardized request lists, automated reminders, and clear status tracking removes a surprising amount of that friction.

Partner bottlenecks cap firm throughput

Another common capacity constraint sits at the partner level.

In many firms, work still depends too heavily on one or two people. Partners review too many files personally, answer too many process questions, rewrite staff work instead of coaching it once, and stay involved in work that should have been delegated earlier.

In an article about capacity by Gary Thomson, CPA, of Thomson Consulting, LLC also pointed to partner behavior as a major capacity lever. Firms create more room when partners lead, delegate, and stay focused on their highest-value work instead of acting as the system.

Here is what that looks like in practice. A partner insists on reviewing every business return before it goes out. That same partner is also handling sales conversations, fielding client calls, and stepping into technical issues across the team. Staff finish work, but returns sit for days waiting for final review. The firm feels short-staffed, yet the larger issue is review design. Until review authority, documentation standards, and escalation rules are reworked, additional hires will keep piling work onto the same bottleneck.

Standardized workflows make technology useful

Two firms with the same number of people can have very different capacity because process consistency shapes how quickly work moves. When workflows are optimized and standardized, staff know how a job starts, what is ready for review, where files belong, and what the reviewer expects. That cuts confusion, speeds handoffs, and makes review more efficient.

This also determines whether technology helps. Workflow tools, portals, automation, and AI create leverage when they reduce manual touches, improve visibility, and keep work moving. But when firms apply technology to inconsistent processes, they often add complexity instead of removing it.

The Tax Adviser ties firm efficiency directly to streamlined workflows, documented procedures, technology use, and offshoring preparation. In practice, that means firms get more value from their tools when the underlying process is already clear.

Firms can create more capacity with the team they already have

The profession still has a recruiting challenge. The hiring data and workforce trends make that clear, but firms that explain every operational strain as a talent shortage risk missing the larger opportunity.

Capacity grows when firms cut manual steps, standardize execution, delegate more effectively, and use technology to reduce low-value labor. These improved systems let good people do more high-quality work per hour.

The firms that pull ahead will be the ones that get more leverage from the team they already have.