My 8 yo daughter has this chore list:
*********************************
Every Day Before School:
Wash face, brush hair, get dressed.
Make bed and tidy up room.
Put dirty clothes in basket.
Wipe out bathroom sink after use.
Every Day After School:
Gather your belongings from other rooms of the house; put away!
Unload silverware from dishwasher.
Feed the cats and clean out litter boxes.
Set the table.
Dry the dishes after Mom washes them.
Put away shoes and coat and backpacks after school.
Set out backpack and anything needed for school next day.
Bring in the mail.
On Saturdays:
Strip the sheets from your bed and put in the laundry.
Wipe all the doorknobs with a Clorox wipe.
Empty your clothes basket into the laundry.
Help mom or dad put clean sheets on bed.
Put the bathroom rug in laundry.
Dust your bedroom.
*************************************
My 12 yo son has a longer list, as he is older.
They both know that they do chores because they are part of this family, and we all have a responsibility to each other to help the household run smoothly. (yeah, like THAT happens! But it's a nice theory!)
I do give each of them $5.00 a week as their "payday". Their job is to go to school and be a good student. (This is not in any way related to grades - it just means that they have to go try their best at school)
Once they receive their pay, they immediately give back to me 40% (2.00) so that I can divvy it up in their "accounts" that I keep for them. 10% each goes to church, charity, college, and short term savings.
So that's how we do it.