ESA's Costing software, ECOS, is mandatory for procurement actions of 10 Meuro and above. This includes sub-contractors even if their own share does not reach 10 Meuro. Click here to find out how to install ECOS and get started.
ECOS can be used for all your financial proposals. Using it frequently will make you a confident user and its many powerful advanced features will allow you to assemble your financial proposals faster and more reliably than when using interlinked spreadsheets.
More details on regulatory aspects can be found in the General Conditions of Tender for ESA contracts, which can be found on EMITS under Reference documentation.
Details on the Conformal Use of ECOS for the preparation of Financial Proposals can be found here.