I am having such trouble working out if the estimated income I gave to tax credits is correct or not. I seem to come up with different figures each time. Im sure as I gave our estimated income I overestimated but on looking at it now I seem to have underestimated- I think I possibly missed a pay rise as last years figures were also skewed by a different ML. Im not sure of my figures. I have saved some CTC aside in case the award is wrong but should I say now that I underestimated my wages or shall I just wait until the end of the year and sort it out then?