Depending on the complexity of the circumstances, total probate costs are estimated to run 2-7 percent of the value of the estate, or $2,000-$7,000 for an estate (house, cars, stocks, bonds, bank accounts, etc.) worth $100,000. Probate laws vary considerably by state, so costs vary also. A Utah attorney estimates that the average cost of probating an uncontested will there is $2,000-$3,000. An attorney in the state of Washington pegs it at $2,500-$5,000.