We require the kids to clean up after themselves- make their bed, clear their place at the table, wipe off the sink in their bathroom, clean up their toys, put away their laundry. These are required and there will be consequences if they are not done. It's not tied to money at all. Consequences are losing not being able to play with friends or have screen time until whatever is forgotten is done.
We also have "citizen of the house chores"- these are things you are requested to do because you're part of the house and you benefit from them being done- helping bring in the trash cans or take them out on trash day, helping with cooking, putting away clean dishes, etc. These are also not paid.
They get some pocket money that is not tied to any of the above.
If one of the kids is trying to save for something we will over "extra" jobs for money. Things like washing the car, cleaning out the garage, weeding, etc. We tell them what we want done and what we'll pay and they decide if they want to do it or not.
This is exactly what we do.
I guess, before you decide why/how much allowance to give, you have to decide what your end goal is. For us, it's teaching our kids:
1) how to take care of themselves and their belongings (i.e. clean your toys, make your bed, etc and these aren't tied to a monetary reward)
2) how to be respectful of those they live with and contribute to the family harmony (i.e. everyone has a chore or two to do each day, also not tied to monetary reward, no whining allowed)
3) how to manage their money for the maximum benefit of their immediate needs, long term needs, and charity/caring for those less fortunate (making sure they split their money in to the appropriate categories and not bailing them out if they failed to save/budget properly)
4) the joys of the side hustle (extra paid chores are almost always available in our house)
We want them to learn how to manage money under our care, just as much as we want them to learn how to read, or drive a car.
It's kind of funny, because we can already see patterns in our children- one is a big saver, another is an impulse shopper (and quickly regrets it!) and another just seems to have no clue how to manage any of it. Luckily, since we see these things now, we can gently try to correct.....or allow a big failure to become a teaching opportunity.
Neither DH nor I ever learned how to manage our money in our younger years, and we are, quite literally, still paying for this.
We call our allowance a "Pay Day" (since we want to associate the money with future jobs), and it lines up with the actual payday in our house....i.e. every two weeks. Everyone gets their age in dollar bills (so my 13 year old get $13 in ones, every two weeks) and they get a raise on their birthdays.