加州是这么说的：

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.”

看来最保险的做法是薯爷和tax2说的，退$5000给房客，除非你有receipt证明找房客有另外的花费。当然，也可以先不退，如果房客闹，就老老实实退$5000吧