We take all our bills, add them together, divide by four and that’s the first thing we take out of each check and put into a bill account where all our bills are automatically withdrawn from. We put our extra checks in there too, to use as a buffer, and then every once in a while we’ll assess the account and pull out money if there’s too much buffer. We just pulled out $500 last week! It’s always a nice “surprise”. We put it in our house sinking fund. When we got started doing that, we used our tax refund to pad our account a bit, and now it runs smoothly and there’s always plenty of money in there.