Bob made the following payments to state and local governments in 2018:

• State income taxes withheld from wages totaled $3,500
• The remaining balance on 2017 state income taxes of $200 was paid on 4/10/2018
• State sales taxes paid totaled $2,000
• Real estate taxes totaled $6,000, which included $1,000 for solid waste collection and disposal

What is his maximum deduction for state and local taxes for 2018?