I found pencil & paper for mewas the best way
Literal like another poster states work out all my bills over the entire year - bills I have to pay, so water, electric, gas, council tax, nursery or after school care, rent, car insurance & VED
Add it all up and then divide by 52
So
Electric 66 per month £800 per year
Water 25 per month£300 per year
Gas £16 per month £200 per year
Council tax 88 per month for 10 payments 880 per year
Total is £41.92 per week as 2180 divided by 52
Now multiply all your incomings to a yearly amount so your HB by 26 your tax credits and CB by 52 and your wages by 12 and the total divide by 52
do for example if what you earn, CB & WTC and CTC and HB comes to hypertheticly 7000 that would give you £134 per week
So leaves you with £92 per week for food clothes petrol etc
So each week take out the £41 amount and put in a building society account or set up a standing order to a separate account - that account will then always have money in to pay the bills
The other amount is what you have to spend, it may take a few weeks for this amount to physically be in your account and eventually there will be more - what you must not do is spend more than your allotted amount as other wise you won’t have enough money at the end of the month