Sole Source (SOSO)

A Sole Source award is a procurement made to one contractor without competition because only one source is capable of meeting the government’s requirements.

What Is Sole Source?

In government contracting, Sole Source means the government determines that only one responsible contractor can provide the required product or service within the needed timeframe and under the required conditions.

It is important because it is an exception to normal competitive procurement and must be supported by a valid justification.

Key Characteristics

Awarded to one contractor without competition

Used when only one source can meet the requirement

Based on a justified acquisition reason

Different from full and open competition

Usually requires documented approval

How It Works in Government Contracting

Sole Source is used during acquisition planning and award when the government concludes that competition is not practical because only one contractor can satisfy the need.

It is used by contracting officers, program offices, legal teams, and acquisition personnel. In practice, the government documents why only one source is available, why alternatives are not suitable, and why the award should go directly to that contractor.

This may happen because of unique capability, urgent timing, exclusive rights, compatibility needs, or another valid procurement basis.

Regulatory Framework

Sole Source is part of the broader federal framework for limiting competition. Its use depends on the facts of the procurement and the legal authority supporting the noncompetitive award.

The government generally must prepare and approve a justification explaining why competition is not possible.

Why It Matters for Contractors

Sole Source matters because it can create a direct award path for the selected contractor without a full competition.

It also matters strategically because other contractors may review the basis for the award, and agencies must be able to support why only one source was capable of meeting the requirement.

Common Misconceptions

Sole Source means the government simply prefers one contractor.

It requires a valid reason showing that only one source can meet the requirement.

Sole Source is the same as Single Source.

Sole Source generally means only one source is available, while Single Source may involve multiple possible sources but only one selected.

Sole Source awards do not need justification.

They usually require formal supporting documentation and approval.

Frequently Asked Questions

What is a Sole Source award?

It is an award to one contractor without competition because only one source can meet the requirement.

Why would the government use Sole Source?

Because no other source can provide the needed product or service under the required conditions.

Is Sole Source allowed in government contracting?

Yes, but only when supported by a valid acquisition reason and proper approval.

Why is Sole Source important?

Because it affects competition, award strategy, and contractor positioning.