We currently have to submit with the standard tax code of £12,570, but I have numerous clients that do not have the standard due to benefits, so the code is lower and as a result the tax will be more than I can generate on the return. Meaning we then have to wait for HMRC to adjust it and tell us what is actually due. Surely this is a bit backwards. If there was a box to add an amended tax code and not just leave with the standard this would be of great benefit.