Income change and working tax credits

[Inge]

OH was on £10k a year last year and now his contract is for £15k per year. After tax its about £13k, Iv read the tax credit website and it says that if income goes up by less then 10k the amount you get shouldnt change. So should OH still get the same amount of tax credits this year? Wev not had our renewal pack yet and we let tax credits know when OH changed jobs in July. Thanks for any help girls