My friend is living in my house but hasn’t been able to pay rent on time. We didn’t have a formal agreement. How can I get them to move out?

Since you didn’t have a formal agreement, you can’t legally force them to leave immediately. You can give them a reasonable notice period (around 30 days) to vacate. You can also try to negotiate a payment plan for the outstanding rent. If they refuse to comply, you may need to consider legal action, which can be expensive and time-consuming.