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  • How to develop software for MTD, CT600, filing etc

    Hello we are looking at creating a platform for small companies to allow them to manage their accounts etc, and a key part of this would be the ability to submit VAT (MTD) returns, filt CT600 + iXBRL etc. How do we register as a software developer? How can we access specifications / protocols and get access to test resources? Finally how do we get certified so we can get listed on the HMRC pages? Thanks, Jim