For more comments on these forms from the date of their publication, see News Analysis published by Sir Vivian Ramsey: ACE Professional Service Suite of Agreements 2017. This practice takes into account the remarkable terms of the ACE PSA. It is also interested in the form of the safety guarantee to be used with the ACE PSA and also covers the performance plans for civil engineering and building, as well as for mechanical and electrical engineering, published separately by the ACE. The ACE Professional Services Agreement (PSA) is a standard form published by the Association for Consultancy and Engineering (ACE). This practice note discusses the 2017 edition (ACE published previous editions of the ACE Agreement and related documents in 2009). The ACE PSA contains built-in guides and is available in digital and printed form. ACE also publishes other agreements, including the ACE Professional Services Agreement: Advisory, Investigatory and other services, a sub-advisory agreement, a sub-form contract and a consumer use agreement (which are not covered by this practice note). The ACE Professional Services Agreement also provides for the inclusion of tailor-made/complementary clauses if necessary for certain projects. Where it is agreed that the consultant will provide guarantees to third parties, the new edition will be provided with an appropriate form of guarantee, adapted to and in accordance with the ACE Professional Services Contract; Where appropriate, optional step-in arrangements are available. Please note that only digital versions of contracts and agreements can be purchased directly from us. .