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Shared services.

Aka. Shared services center · SSC · centralized functions
All terms

What is shared services?

Shared services is the consolidation of support functions — finance and accounting, HR, IT, procurement, payroll — out of individual business units and into a single internal organization that serves all of them. Instead of every site or division running its own accounts-payable team and its own help desk, one shared unit provides those functions to the whole group.

The logic is the elimination of duplication. A company that has grown through acquisition often ends up with the same function performed many times over, each with its own staff, systems, and process. Pulling those into one place removes the redundancy, creates scale, and lets the group standardize how the work is done.

Shared services sits between two related ideas. It is more than simple centralization because it usually comes with defined service levels and an internal customer relationship; it is distinct from outsourcing because the function stays inside the company rather than being handed to a third party — though many shared-services centers are themselves a step toward eventual outsourcing.

How a shared-services model is built

Standing up shared services is a multi-step operational project, not a single decision.

  1. Scope the functions. Decide which activities are transactional and standardizable enough to centralize — payroll, AP/AR, IT support — versus those that must stay close to the business.
  2. Standardize before you centralize. Aligning process and, ideally, systems across units first; centralizing chaos just relocates it. This is often why a shared-services move pairs with an ERP migration.
  3. Build the center. Establish the shared unit, often in a lower-cost location, with defined roles and service-level agreements to its internal customers.
  4. Migrate in waves. Transition functions unit by unit, stabilizing each before moving the next, to avoid breaking the operations that depend on them.
  5. Govern with SLAs and chargebacks. Hold the center accountable for service quality and, in many models, charge units for what they consume so cost stays visible.

The savings come from headcount reduction, scale in purchasing and systems, and process discipline — but they are realized only after a transition that carries real execution risk.

Where shared services creates value and where it strains

For a sponsor, shared services is a structural cost lever and an integration enabler. It removes duplicated overhead, makes a multi-entity group easier to control and report on, and creates a clean platform that bolt-ons can be folded into rather than each acquisition keeping its own back office.

The strain is real. Centralization can pull the function away from the business it serves, slowing response and creating friction if service levels slip. Done poorly, it trades local responsiveness for cost and produces internal resentment. The model works when the centralized work is genuinely transactional and the center is held to clear, measured service standards — and it tends to fail when judgment-heavy, business-specific work is forced into a remote center for the sake of an org chart.

Frequently asked.

5 questions
01 What's the difference between shared services and outsourcing?

Shared services keeps the function inside the company — staffed and managed by the business, just consolidated into one internal unit. Outsourcing hands the function to an external provider under contract.

The two are often sequential: a company builds a shared-services center to standardize and prove out a function, then outsources it once the process is clean and documented. Shared services can be the bridge to outsourcing.

02 Which functions are usually moved into shared services?

The transactional, repeatable, rules-based functions: finance and accounting (accounts payable, accounts receivable, general ledger), payroll, HR administration, IT support, and procurement.

Judgment-heavy or deeply business-specific work — strategy, FP&A close to the business, specialized engineering — usually stays decentralized, because the cost of distance outweighs the saving from scale.

03 Why standardize processes before centralizing them?

Centralizing inconsistent processes simply moves the inconsistency into one place, where it is harder, not easier, to manage. The savings and quality gains depend on every unit doing the work the same way.

This is why shared-services projects so often pair with an ERP migration or a process-standardization effort first — common systems and common process are what make a single center efficient.

04 How does shared services help a buy-and-build strategy?

A platform pursuing bolt-ons accumulates duplicated back offices with every acquisition. A shared-services center gives the platform a single place to absorb each new company's transactional functions, rather than letting each one keep its own finance and IT teams.

That turns integration into a repeatable motion and is a large part of how acquisition synergies are actually captured rather than just projected.

05 Why do shared-services programs sometimes fail?

Most failures trace to two causes: centralizing work that needed to stay close to the business, and a poorly managed transition that breaks service before the center stabilizes. When response times slip, internal customers lose trust and route around the center.

The model holds when scope is limited to genuinely transactional work and the center is governed by clear, measured service-level agreements that keep it accountable to the units it serves.

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