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How to negotiate a delayed rent payment
Figure out when you will have the money.
Before contacting your landlord, you should figure out when you will get the money to pay your rent. You don't want to negotiate until you are absolutely sure of the date on which you will have enough money to pay rent.
For example, your paycheck might be delayed because you have started a new job and your company doesn't pay until three weeks have passed. In this situation, you can be certain of the date on which you will have the money.