No allowance, which to me means that it's an amount given on a set schedule. Kids are part of the household, everyone does what they can to maintain/benefit the household, to the best of their abilities. For a 3 year old, that may be sorting dry flatware into a drawer, for a 12 year old, perhaps choosing what dinner will be, selecting the ingredients when we go shopping, prepping and cooking it, and serving it. Everybody has no less than three things to do for the household everyday, and if kids want to earn money for doing extra things, so be it. All tasks for extra money are proposed to me, but they can't be the normal things around the house. I agree to the price, timeline and agree that I don't want to do it/don't have time, or I decline. If I decline, all the kids can counter with another offer. If the job is not done within the agreed time frame, I do it the following day, and the child pays me for doing it at the agreed price. I've paid as little as $.50/per trashcan to have every trashcan washed, sanitized and sprinkled with baking soda to as much as $30 to have all three vehicles washed, vacuumed and shined in 24 hours or less. The kids learn to brainstorm, present an idea, accept a rejection and try to counter with a better offer, what happens when when you don't fulfill an obligation, debate whether something is necessary or overpriced, etc. They learn to value the things they do for the family everyday as part of being the family, and the extra tasks make them learn to value hard work.
Each child has 4 envelopes. 1st is giving, 10%, may be used for any charity they want, at any time, so one child gives every week at church while another saves for different things for an animal rescue. 2nd is forever savings, 20%, to be used only to save the child's life or someone else's. 3rd is savings for a goal, 30%, the child must save the money a minimum of 30 days, but the goal may be small (skateboard) or large (car). 4th is spending money, 40%, and as long as they clear it with me first, they can buy whatever they want with it; the last thing I declined was the child who wanted to buy 10 bottles of kefir without considering how much room we had in the refrigerator, the last I approved was clothes for one child and 3 bottles of kefir for the child who reconsidered how much room was actually available.