The acceptance of digital signatures follows the launch of Transact's upload documents function which allows Financial Planners to upload documents directly to Transact online.
The platform said that Financial Planners who wish to use digital signatures with Transact should make contact with their regional Transact Adviser Support Manager.
Glen Sweet, head of sales at Transact, said: "These two developments combined, digital signatures and document upload, provide advisers with improved process efficiency during their interactions with clients."
In April the FCA said it had no ban on e-signatures and they can be acceptable in many circumstances as many regulated firms found it difficult to get wet signatures from clients due to remote working.
Several platforms and providers have started accepting digital signatures for the first time during the Coronavirus pandemic as more people do business online.
Last month rival platform Nucleus opened its doors to electronic signatures for new business and client instructions to support remote working by advisers.
Hub Financial Solutions, part of the Just Group, said it persuaded more providers to accept e-signatures in April.
Hub said its remote upload and signature proposals have been accepted by Aviva, Canada Life, Hodge Lifetime, Just Group, Legal & General and Scottish Widows and also its affinity partners Phoenix, Prudential and Royal London.