The Savings Were Real and the Total Cost Went Up Anyway
Outsourcing business cases compare a vendor rate against an internal salary. The costs that show up afterwards are the ones the comparison never contained.
The Business Case as Usually Written
An internal function costs a known amount, mostly salaries and associated overhead. A vendor proposes to deliver it for less, typically through labour arbitrage, scale, or specialisation. The comparison is stark and the decision looks obvious.
What makes the comparison misleading is not that the vendor rate is wrong. It is that moving work outside a company creates categories of cost that did not previously exist, and those categories are absent from the model.
Work done inside an organisation is coordinated by management. Work done outside is coordinated by contracts, and contracts are more expensive to operate than they look.
The Costs That Appear Afterwards
Vendor management. Someone has to manage the relationship: performance reviews, service level monitoring, escalation, contract renegotiation, invoice verification. This is a real team with real salaries, and it is frequently omitted from the original case entirely.
Transition. Knowledge transfer, parallel running, documentation of processes that were never documented, and a period of degraded performance while the new team learns. Transition typically consumes a year or more of the projected savings.
Specification. Internal teams handle ambiguity by using judgement. A vendor delivers what the contract specifies. Everything the contract does not cover becomes a change request at a price, and the volume of things nobody thought to specify is consistently underestimated.
Coordination friction. A colleague who can be asked a question in a hallway is replaced by a ticketing system and a response window. Each individual delay is small. Across an organisation they aggregate into slower decisions.
| Cost category | In original case |
|---|---|
| Vendor fees | Yes |
| Retained internal salaries | Usually |
| Vendor management team | Often omitted |
| Transition and parallel running | Understated |
| Change requests | Rarely modelled |
| Coordination delay | Not quantified |
The Retained Organisation
A recurring shortfall comes from assuming internal cost falls to zero. It does not. A retained team is needed to define requirements, own the relationship, handle exceptions and maintain enough internal expertise to evaluate whether the vendor is doing a competent job.
If that retained group is not planned deliberately, it forms anyway, informally, distributed across people who now do vendor coordination alongside their original roles. That cost is real and it never appears in any budget line, which is one reason outsourcing savings can be hard to trace afterwards.
The Bargaining Position Shifts
The first contract is competitive because alternatives exist. By renewal the situation has changed. Internal capability has been dismantled, the vendor holds the process knowledge, and switching means another transition with another set of costs.
Vendors price accordingly. This is not misconduct, it is the predictable result of one party having an outside option and the other having lost it. Companies that maintain a credible ability to bring work back, or that split work between two vendors, retain leverage that single sourced arrangements give away.
When It Works
Outsourcing succeeds under conditions that are reasonably identifiable. The work is well defined and measurable, so a contract can specify it. It is not a source of competitive differentiation. The vendor has genuine scale or expertise advantages rather than only cheaper labour. And the company retains enough internal understanding to manage the relationship.
Where it goes wrong is where the work is ambiguous, entangled with other processes, or close to what makes the company distinctive. Those are exactly the cases where coordination cost is highest and contracts are least able to capture what is needed.
The Bottom Line
The failure mode in outsourcing is not vendors charging too much. It is business cases that compare a vendor rate against an internal salary while omitting vendor management, transition, change requests, the retained organisation and the loss of bargaining position at renewal. A case that includes those and still shows a saving is probably a genuine one. A case that shows a forty percent saving and contains none of them has not been tested against how the arrangement will actually work.