How much do you spend each week on household costs? And what does that equate to on an annual basis? According to a forecast, those figures will be rising next year. It’ll be about £1,700 more per year – that’s just over £30 more per week for a typical family of two adults and two children. Analysis from the Centre for Economics and Business Research projected the inflation rate would rise to 4.6% by Christmas mainly due to higher fuel and energy prices, but analysts say the full impact of this hasn’t been passed on to customers by supermarkets.