Summer, I've just done the Entitled To calculator, which says that I will lose £3 a week, once the extra HB/CTB is taken into account (just over £10 a week off my Tax credits but I'd get more rent and CT paid) the first year, which is far less scary than I expected however we often don't have £3 left at the end of the week.
I could shave £3 off the £15 a week I put into my savings account for Christmas/birthdays/days out/school shoe replacement (my savings account currently has £20 in it btw, my bank has £6 left in it, I get paid again on Tuesday, but bills, food has been bought so I shouldn't need to use my 'savings' I'm not in a position to be saving for ipads or holidays, I save for what most people would consider to be essentials)
What's worrying me more is that TC are frozen for the next four years, so after that year that £3 will be worth more and more again the year after and more after that. Each £1 is £1 less I can put in my savings for unusual expenses like school trips, uniform and growth spurts, which we struggle to cover at times as it is.
There's also the fact that in 4 years, when dd2 turns 12, I might not be able to work 30 hours because there is a fair chance she won't be able to be left unsupervised due to her disabilities, she is disabled enough to effect our lives, but not disabled enough for us to receive any extra benefits, which I am thankful for, I wouldn't want her life to be harder for any amount of money.
Plus the fact that my boss isn't sure he can afford to keep me on 21 hours with the rise in wages, so that'll make for a bigger loss, but I cannot calculate that until I know what my hours would be or if I even have a job once it comes into force.
It's only £3 a week, but as it is that £3 is enough to make a difference to us.
I think as I'm on the lowest on the scale, I'm least effected, it's people who are earning slightly more than me who will be hit the hardest.
You could play about with the Entitled To calculator if you want to see just exactly how they will be effected.