From TMZ.com:

Up to now we didn’t know how much Katherine Jackson was getting by way of allowance while Michael Jackson’s estate gets probated. In legal docs just unveiled today, we now know the special administrators asked to pay her $26,804 per month.

As for the kids, the family allowance for them is $60,000 per month.

The docs also say “…the Estate assets consist of real and personal property exceeding $500 million and that the Estate is solvent [liquid and able to pay its bills].”

Katherine and Michael’s 3 kids will continue to get an allowance — which is subject to change — until the estate is probated. That could take between 1 and 2 years from now.