https://help.gosimpletax.com/hc/en-gb/articles/202028808-How-long-does-it-take-to-submit-my-return-

https://help.gosimpletax.com/hc/en-gb/articles/202028808-How-long-does-it-take-to-submit-my-return-

  After clicking “Submit to HMRC” and validating your credentials most tax returns are processed within 15 seconds but, unfortunately, the group that goes over this threshold takes hours (4 hours on average, with the slowest ones going over 9 hours). This depends solely on the HMRC servers’ response time.       Other Keywords: time; file; stuck; freeze; 3 dots; three; loading