加州是這麽說的：

https://www.nolo.com/legal-encyclopedia/tenants-right-break-rental-lease-california.html

“You need pay only the amount of rent the landlord loses because you moved out early. ” “Also, the landlord can add legitimate expenses to your bill—for example, the costs of advertising the property.”

看來最保險的做法是薯爺和tax2說的，退$5000給房客，除非你有receipt證明找房客有另外的花費。當然，也可以先不退，如果房客鬧，就老老實實退$5000吧