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The home of Single Source Regulations Office on PGµç×Ó. The Single Source Regulations Office (SSRO) is an executive non-departmental public body, sponsored by the Ministry of Defence (MOD).
The Defence Contract Analysis and Reporting System (DefCARS) allows contractors to meet the reporting requirements for contract and supplier reports.
SSRO guidance on price, profit and costs
Statutory guidance to which the Ministry of Defence and its contractors must have regard when determining whether costs are allowable in qualifying defence contracts.
This collection groups together all the documents relating to the Single Source Cost Standards: Statutory Guidance on Allowable Costs
This collection brings together the baseline and contract profit rate documents published from January 2015.
2025/26 baseline profit rate, capital servicing rates and government owned contractor rate
The SSRO’s guidance on adjustments to the baseline profit rate is statutory guidance to which the Ministry of Defence and its contractors must have regard when determining the contract profit rate for qualifying defence cont…
This document provides an overview of the SSRO’s guidance on the regulatory framework for single source defence contracts.
We are consulting on draft guidance which aims to assist the MOD and the parties to qualifying contracts to understand and apply the provisions of the regulatory framework which relate to qualifying sub-contracts.
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